ecearth3/runtime/classic/ctrl/ping_ocnBgChem_DR1.00.27.xml

<!-- Ping files generated by dr2xml 1.13 using Data Request 01.00.27 -->
<!-- lrealms= ['ocnBgchem'] -->
<!-- exact= False -->
<!--  listof_home_vars : None
 tierMax : 3
 realms_per_context : {'lmdz': ['atmos', 'atmos land'], 'nemo': ['seaIce', 'ocean', 'ocean seaIce', 'ocnBgchem', 'seaIce ocean'], 'orchidee': ['land', 'landIce land', 'land landIce', 'landIce']}
 max_priority : 3
 max_file_size_in_floats : 20000000000.0
 grid_choice : {'IPSL-CM6A-LR': 'LR'}
 excluded_vars_file : None
 sizes : {'LR': [20592, 79, 32768, 91, 30, 14, 128]}
 ping_variables_prefix : CMIP6_
 source_types : {'IPSL-CM6A-LR': 'AOGCM AER BGC'}
 path_extra_tables : None
 grid_policy : native
 path_special_defs : None
 mips : {'LR': set(['CORDEX', 'GMMIP', 'RFMIP', 'VolMIP', 'CMIP6', 'ScenarioMIP', 'GeoMIP', 'C4MIP', 'PDRMIP', 'CMIP', 'DECK', 'LUMIP', 'CMIP5', 'CFMIP', 'OMIP', 'DAMIP', 'CCMI', 'SolarMIP', 'VIACSAB', 'SIMIP', 'DCPP', 'ISMIP6', 'AerChemMIP', 'PMIP', 'FAFMIP', 'DynVar', 'LS3MIP', 'SPECS', 'HighResMIP'])}
 excluded_vars : []
 orphan_variables : {}
--> 

<context id="ocnBgchem">
<field_definition>
<!-- for variables which realm equals one of _ocnBgchem-->
   <field id="CMIP6_arag"          field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_aragonite_expressed_as_carbon_in_sea_water : sum of particulate aragonite components (e.g. Phytoplankton, Detrital, etc.) -->
   <field id="CMIP6_aragos"        field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_aragonite_expressed_as_carbon_in_sea_water : sum of particulate aragonite components (e.g. Phytoplankton, Detrital, etc.) -->
   <field id="CMIP6_bacc"          field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_bacteria_expressed_as_carbon_in_sea_water : sum of bacterial carbon component concentrations -->
   <field id="CMIP6_baccos"        field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_bacteria_expressed_as_carbon_in_sea_water : sum of bacterial carbon component concentrations -->
   <field id="CMIP6_bddtalk"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_sea_water_alkalinity_expressed_as_mole_equivalent_due_to_biological_processes : Net of biological terms in time rate of change of alkalinity -->
   <field id="CMIP6_bddtdic"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_dissolved_inorganic_carbon_in_sea_water_due_to_biological_processes : Net of biological terms in time rate of change of dissolved inorganic carbon -->
   <field id="CMIP6_bddtdife"      field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_dissolved_inorganic_iron_in_sea_water_due_to_biological_processes : Net of biological terms in time rate of change of dissolved inorganic iron -->
   <field id="CMIP6_bddtdin"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_dissolved_inorganic_nitrogen_in_sea_water_due_to_biological_processes : Net of biological terms in time rate of change of nitrogen nutrients (e.g. NO3+NH4) -->
   <field id="CMIP6_bddtdip"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_dissolved_inorganic_phosphorus_in_sea_water_due_to_biological_processes : Net of biological terms in time rate of change of dissolved phosphorus -->
   <field id="CMIP6_bddtdisi"      field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_dissolved_inorganic_silicon_in_sea_water_due_to_biological_processes : Net of biological terms in time rate of change of dissolved inorganic silicon -->
   <field id="CMIP6_bfe"           field_ref="BFe_E3T"     expr="@BFe_E3T / @e3t * 1e-3 + @SFe_E3T / @e3t * 1e-3" > BFe_E3T / e3t * 1e-3 + SFe_E3T / e3t * 1e-3  </field>  <!-- P2 (mol m-3) mole_concentration_of_particulate_organic_matter_expressed_as_iron_in_sea_water : sum of particulate organic iron component concentrations -->
   <field id="CMIP6_bfeos"         field_ref="BFeSFC_E3T"  expr="@BFeSFC_E3T / @E3TSFC * 1e-3 + @SFeSFC_E3T / @E3TSFC * 1e-3" > BFeSFC_E3T / E3TSFC * 1e-3 + SFeSFC_E3T / E3TSFC * 1e-3  </field> <!-- P2 (mol m-3) mole_concentration_of_particulate_organic_matter_expressed_as_iron_in_sea_water : sum of particulate organic iron component concentrations -->
   <field id="CMIP6_bsi"           field_ref="GSi_E3T"     expr="@GSi_E3T / @e3t * 1e-3"  >   GSi_E3T / e3t * 1e-3 </field> <!-- P2 (mol m-3) mole_concentration_of_particulate_matter_expressed_as_silicon_in_sea_water : sum of particulate silica component concentrations -->
   <field id="CMIP6_bsios"         field_ref="GSiSFC_E3T"  expr="@GSiSFC_E3T / @E3TSFC * 1e-3"  >  GSiSFC_E3T / E3TSFC * 1e-3 </field> <!-- P2 (mol m-3) mole_concentration_of_particulate_organic_matter_expressed_as_silicon_in_sea_water : sum of particulate silica component concentrations -->
   <field id="CMIP6_calc"          field_ref="CaCO3_E3T"   expr="@CaCO3_E3T / @e3t * 1e-3" >  CaCO3_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_calcite_expressed_as_carbon_in_sea_water : sum of particulate calcite component concentrations (e.g. Phytoplankton, Detrital, etc.) -->
   <field id="CMIP6_calcos"        field_ref="CaCO3SFC_E3T"   expr="@CaCO3SFC_E3T / @E3TSFC * 1e-3"  >  CaCO3SFC_E3T / E3TSFC * 1e-3 </field> <!-- P2 (mol m-3) mole_concentration_of_calcite_expressed_as_carbon_in_sea_water : sum of particulate calcite component concentrations (e.g. Phytoplankton, Detrital, etc.) -->
   <field id="CMIP6_chl"           field_ref="NCHL_E3T"    expr="@NCHL_E3T / @e3t * 1e-3 + @DCHL_E3T / @e3t * 1e-3" > NCHL_E3T / e3t * 1e-3 + DCHL_E3T / e3t * 1e-3 </field> <!-- P1 (kg m-3) mass_concentration_of_phytoplankton_expressed_as_chlorophyll_in_sea_water : sum of chlorophyll from all phytoplankton group concentrations.  In most models this is equal to chldiat+chlmisc, that is the sum of "Diatom Chlorophyll Mass Concentration" plus "Other Phytoplankton Chlorophyll Mass Concentration" -->
   <field id="CMIP6_chlcalc"       field_ref="dummy_XYO"        /> <!-- P2 (kg m-3) mass_concentration_of_calcareous_phytoplankton_expressed_as_chlorophyll_in_sea_water : chlorophyll concentration from the calcite-producing phytoplankton component alone -->
   <field id="CMIP6_chlcalcos"     field_ref="dummy_XY"         /> <!-- P2 (kg m-3) mass_concentration_of_calcareous_phytoplankton_expressed_as_chlorophyll_in_sea_water : chlorophyll concentration from the calcite-producing phytoplankton component alone -->
   <field id="CMIP6_chldiat"       field_ref="DCHL_E3T"  expr="@DCHL_E3T / @e3t * 1e-3" > DCHL_E3T / e3t * 1e-3  </field> <!-- P2 (kg m-3) mass_concentration_of_diatoms_expressed_as_chlorophyll_in_sea_water : chlorophyll from diatom phytoplankton component concentration alone -->
   <field id="CMIP6_chldiatos"     field_ref="DCHLSFC_E3T" expr="@DCHLSFC_E3T / @E3TSFC * 1e-3" >  DCHLSFC_E3T / E3TSFC * 1e-3 </field> <!-- P2 (kg m-3) mass_concentration_of_diatoms_expressed_as_chlorophyll_in_sea_water : chlorophyll from diatom phytoplankton component concentration alone -->
   <field id="CMIP6_chldiaz"       field_ref="dummy_XYO"        /> <!-- P2 (kg m-3) mass_concentration_of_diazotrophs_expressed_as_chlorophyll_in_sea_water : chlorophyll concentration from the diazotrophic phytoplankton component alone -->
   <field id="CMIP6_chldiazos"     field_ref="dummy_XY"         /> <!-- P2 (kg m-3) mass_concentration_of_diazotrophs_expressed_as_chlorophyll_in_sea_water : chlorophyll concentration from the diazotrophic phytoplankton component alone -->
   <field id="CMIP6_chlmisc"       field_ref="NCHL_E3T"  expr="@NCHL_E3T / @e3t * 1e-3" > NCHL_E3T / e3t * 1e-3 </field>  <!-- P2 (kg m-3) mass_concentration_of_miscellaneous_phytoplankton_expressed_as_chlorophyll_in_sea_water : chlorophyll from additional phytoplankton component concentrations alone -->
   <field id="CMIP6_chlmiscos"     field_ref="NCHLSFC_E3T" expr="@NCHLSFC_E3T / @E3TSFC * 1e-3" > NCHLSFC_E3T / E3TSFC * 1e-3 </field>  <!-- P2 (kg m-3) mass_concentration_of_miscellaneous_phytoplankton_expressed_as_chlorophyll_in_sea_water : chlorophyll from additional phytoplankton component concentrations alone -->
   <field id="CMIP6_chlos"         field_ref="NCHLSFC_E3T"  expr="@NCHLSFC_E3T / @E3TSFC * 1e-3 + @DCHLSFC_E3T / @E3TSFC * 1e-3" > NCHLSFC_E3T / E3TSFC * 1e-3 + DCHLSFC_E3T / E3TSFC * 1e-3 </field>  <!-- P1 (kg m-3) mass_concentration_of_phytoplankton_expressed_as_chlorophyll_in_sea_water : sum of chlorophyll from all phytoplankton group concentrations.  In most models this is equal to chldiat+chlmisc, that is the sum of "Diatom Chlorophyll Mass Concentration" plus "Other Phytoplankton Chlorophyll Mass Concentration" -->
   <field id="CMIP6_chlpico"       field_ref="dummy_XYO"        /> <!-- P2 (kg m-3) mass_concentration_of_picophytoplankton_expressed_as_chlorophyll_in_sea_water : chlorophyll concentration from the picophytoplankton (<2 um) component alone -->
   <field id="CMIP6_chlpicoos"     field_ref="dummy_XY"         /> <!-- P2 (kg m-3) mass_concentration_of_picophytoplankton_expressed_as_chlorophyll_in_sea_water : chlorophyll concentration from the picophytoplankton (<2 um) component alone -->
   <field id="CMIP6_co3"           field_ref="CO3"        /> <!-- P1 (mol m-3) mole_concentration_of_carbonate_expressed_as_carbon_in_sea_water : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with a charge of minus two. -->
   <field id="CMIP6_co3abio"       field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_carbonate_abiotic_analogue_expressed_as_carbon_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". In ocean biogeochemistry models, an "abiotic analogue" is used to simulate the effect on a modelled variable when biological effects on ocean carbon concentration and alkalinity are ignored. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. -->
   <field id="CMIP6_co3abioos"     field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_carbonate_abiotic_analogue_expressed_as_carbon_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". In ocean biogeochemistry models, an "abiotic analogue" is used to simulate the effect on a modelled variable when biological effects on ocean carbon concentration and alkalinity are ignored. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. -->
   <field id="CMIP6_co3nat"        field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_carbonate_natural_analogue_expressed_as_carbon_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". In ocean biogeochemistry models, a "natural analogue" is used to simulate the effect on a modelled variable of imposing preindustrial atmospheric carbon dioxide concentrations, even when the model as a whole may be subjected to varying forcings. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. -->
   <field id="CMIP6_co3natos"      field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_carbonate_natural_analogue_expressed_as_carbon_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". In ocean biogeochemistry models, a "natural analogue" is used to simulate the effect on a modelled variable of imposing preindustrial atmospheric carbon dioxide concentrations, even when the model as a whole may be subjected to varying forcings. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. -->
   <field id="CMIP6_co3os"         field_ref="CO3SFC"         /> <!-- P2 (mol m-3) mole_concentration_of_carbonate_expressed_as_carbon_in_sea_water : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with a charge of minus two. -->
   <field id="CMIP6_co3satarag"    field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_carbonate_expressed_as_carbon_at_equilibrium_with_pure_aragonite_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. Aragonite is a mineral that is a polymorph of calcium carbonate. The chemical formula of aragonite is CaCO3. At a given salinity, the thermodynamic equilibrium is that between dissolved carbonate ion and solid aragonite. Standard names also exist for calcite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_co3sataragos"  field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_carbonate_expressed_as_carbon_at_equilibrium_with_pure_aragonite_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. Aragonite is a mineral that is a polymorph of calcium carbonate. The chemical formula of aragonite is CaCO3. At a given salinity, the thermodynamic equilibrium is that between dissolved carbonate ion and solid aragonite. Standard names also exist for calcite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_co3satcalc"    field_ref="CO3sat"        /> <!-- P1 (mol m-3) mole_concentration_of_carbonate_expressed_as_carbon_at_equilibrium_with_pure_calcite_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. At a given salinity, the thermodynamic equilibrium is that between dissolved carbonate ion and solid calcite. Standard names also exist for aragonite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_co3satcalcos"  field_ref="CO3satSFC"         /> <!-- P2 (mol m-3) mole_concentration_of_carbonate_expressed_as_carbon_at_equilibrium_with_pure_calcite_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The chemical formula of the carbonate anion is CO3 with an electrical charge of minus two. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. At a given salinity, the thermodynamic equilibrium is that between dissolved carbonate ion and solid calcite. Standard names also exist for aragonite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_darag"         field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_aragonite_expressed_as_carbon_in_sea_water_due_to_dissolution : Rate of change of Aragonite carbon mole concentration  due to dissolution -->
   <field id="CMIP6_dcalc"         field_ref="DCAL"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_calcite_expressed_as_carbon_in_sea_water_due_to_dissolution : Rate of change of Calcite carbon mole concentration  due to dissolution -->
   <field id="CMIP6_detoc"         field_ref="POC_E3T"  expr="@POC_E3T / @e3t * 1e-3 + @GOC_E3T / @e3t * 1e-3" >  POC_E3T / e3t * 1e-3 + GOC_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_organic_detritus_expressed_as_carbon_in_sea_water : sum of detrital organic carbon component concentrations -->
   <field id="CMIP6_detocos"       field_ref="POCSFC_E3T"  expr="@POCSFC_E3T / @E3TSFC * 1e-3 + @GOCSFC_E3T / @E3TSFC * 1e-3" >  POCSFC_E3T / E3TSFC * 1e-3 + GOCSFC_E3T / E3TSFC * 1e-3 </field>  <!-- P2 (mol m-3) mole_concentration_of_organic_detritus_expressed_as_carbon_in_sea_water : sum of detrital organic carbon component concentrations -->
   <field id="CMIP6_dfe"           field_ref="Fer_E3T"  expr="@Fer_E3T / @e3t * 1e-3" >  Fer_E3T / e3t * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_iron_in_sea_water : dissolved iron in sea water is meant to include both Fe2+ and Fe3+ ions (but not, e.g., particulate detrital iron) -->
   <field id="CMIP6_dfeos"         field_ref="FerSFC_E3T" expr="@FerSFC_E3T / @E3TSFC * 1e-3" >  FerSFC_E3T / E3TSFC * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_dissolved_iron_in_sea_water : dissolved iron in sea water is meant to include both Fe2+ and Fe3+ ions (but not, e.g., particulate detrital iron) -->
   <field id="CMIP6_dissi13c"      field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_13C_in_sea_water : Dissolved inorganic 14carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissi13cos"    field_ref="dummy_XY"         /> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_13C_in_sea_water : Dissolved inorganic 14carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissi14c"      field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_dissolved_inorganic_14C_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Dissolved inorganic carbon" describes a family of chemical species in solution, including carbon dioxide, carbonic acid and the carbonate and bicarbonate anions. "Dissolved inorganic carbon" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "C" means the element carbon and "14C" is the radioactive isotope "carbon-14", having six protons and eight neutrons and used in radiocarbon dating. -->
   <field id="CMIP6_dissi14cabio"  field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_14C_in_sea_water : Abiotic Dissolved inorganic 14carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissi14cabioos" field_ref="dummy_XY"         /> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_14C_in_sea_water : Abiotic Dissolved inorganic 14carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissic"        field_ref="DIC_E3T"  expr="@DIC_E3T / @e3t * 1e-3" > DIC_E3T / e3t * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_carbon_in_sea_water : Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissicabio"    field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_carbon_abiotic_analogue_in_sea_water : Abiotic Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissicabioos"  field_ref="dummy_XY"         /> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_carbon_abiotic_analogue_in_sea_water : Abiotic Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissicnat"     field_ref="DIC_E3T"  expr="@DIC_E3T / @e3t * 1e-3" > DIC_E3T / e3t * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_carbon_natural_analogue_in_sea_water : Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration at preindustrial atmospheric xCO2 -->
   <field id="CMIP6_dissicnatos"   field_ref="DICSFC_E3T"  expr="@DICSFC_E3T / @E3TSFC * 1e-3" >  DICSFC_E3T / E3TSFC * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_carbon_natural_analogue_in_sea_water : Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration at preindustrial atmospheric xCO2 -->
   <field id="CMIP6_dissicos"      field_ref="DICSFC_E3T"  expr="@DICSFC_E3T / @E3TSFC * 1e-3" >  DICSFC_E3T / E3TSFC * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_carbon_in_sea_water : Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration -->
   <field id="CMIP6_dissoc"        field_ref="DOC_E3T"     expr="@DOC_E3T / @e3t * 1e-3" >  DOC_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_dissolved_organic_carbon_in_sea_water : Sum of dissolved carbon component concentrations explicitly represented (i.e. not ~40 uM refractory unless explicit) -->
   <field id="CMIP6_dissocos"        field_ref="DOCSFC_E3T"     expr="@DOCSFC_E3T / @E3TSFC * 1e-3" >  DOCSFC_E3T / E3TSFC * 1e-3 </field> <!-- P2 (mol m-3) mole_concentration_of_dissolved_organic_carbon_in_sea_water : Sum of dissolved carbon component concentrations explicitly represented (i.e. not ~40 uM refractory unless explicit) -->
   <field id="CMIP6_dmso"          field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_dimethyl_sulfide_in_sea_water : Mole concentration of dimethyl sulphide in water -->
   <field id="CMIP6_dmsos"         field_ref="dummy_XY"         /> <!-- P3 (mol m-3) mole_concentration_of_dimethyl_sulfide_in_sea_water : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for dimethyl sulfide is (CH3)2S.  Dimethyl sulfide is sometimes referred to as DMS. -->
   <field id="CMIP6_dpco2"         field_ref="Dpco2"  > this * 0.101325  </field> <!-- P1 (Pa) surface_carbon_dioxide_partial_pressure_difference_between_sea_water_and_air : The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium.  The partial pressure of a gaseous constituent of air is the pressure which it alone would exert with unchanged temperature and number of moles per unit volume.  The surface called "surface" means the lower boundary of the atmosphere.  The chemical formula for carbon dioxide is CO2. -->
   <field id="CMIP6_dpco2abio"     field_ref="dummy_XY"         /> <!-- P3 (Pa) surface_carbon_dioxide_abiotic_analogue_partial_pressure_difference_between_sea_water_and_air : The surface called "surface" means the lower boundary of the atmosphere. The chemical formula for carbon dioxide is CO2. In ocean biogeochemistry models, an "abiotic analogue" is used to simulate the effect on a modelled variable when biological effects on ocean carbon concentration and alkalinity are ignored. The partial pressure of a gaseous constituent of air is the pressure which it alone would exert with unchanged temperature and number of moles per unit volume. The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure difference between sea water and air is positive when the partial pressure of the dissolved gas in sea water is greater than the partial pressure in air. -->
   <field id="CMIP6_dpco2nat"      field_ref="dummy_XY"         /> <!-- P3 (Pa) surface_carbon_dioxide_natural_analogue_partial_pressure_difference_between_sea_water_and_air : The surface called "surface" means the lower boundary of the atmosphere. The chemical formula for carbon dioxide is CO2. In ocean biogeochemistry models, a "natural analogue" is used to simulate the effect on a modelled variable of imposing preindustrial atmospheric carbon dioxide concentrations, even when the model as a whole may be subjected to varying forcings. The partial pressure of a gaseous constituent of air is the pressure which it alone would exert with unchanged temperature and number of moles per unit volume. The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure difference between sea water and air is positive when the partial pressure of the dissolved gas in sea water is greater than the partial pressure in air. -->
   <field id="CMIP6_dpo2"          field_ref="Dpo2"   > this * 0.101325 </field> <!-- P3 (Pa) surface_molecular_oxygen_partial_pressure_difference_between_sea_water_and_air : The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium.  The partial pressure of a gaseous constituent of air is the pressure which it alone would exert with unchanged temperature and number of moles per unit volume.  The surface called "surface" means the lower boundary of the atmosphere. -->
   <field id="CMIP6_eparag100"     field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_aragonite_expressed_as_carbon_in_sea_water : The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. Aragonite is a mineral that is a polymorph of calcium carbonate. The chemical formula of aragonite is CaCO3. Standard names also exist for calcite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_epc100"        field_ref="EPC100"         /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_organic_matter_expressed_as_carbon_in_sea_water : The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_epcalc100"     field_ref="EPCAL100"         /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_calcite_expressed_as_carbon_in_sea_water : The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. Standard names also exist for aragonite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_epfe100"       field_ref="EPFE100"         /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_iron_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_epn100"        field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_organic_nitrogen_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_epp100"        field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_organic_phosphorus_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_epsi100"       field_ref="EPSI100"         /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_silicon_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_exparag"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_aragonite_expressed_as_carbon_in_sea_water : Downward flux of Aragonite -->
   <field id="CMIP6_expc"          field_ref="EXPC"        /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_organic_matter_expressed_as_carbon_in_sea_water : Downward flux of particulate organic carbon -->
   <field id="CMIP6_expcalc"       field_ref="EXPCAL"        /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_calcite_expressed_as_carbon_in_sea_water : Downward flux of Calcite -->
   <field id="CMIP6_expfe"         field_ref="EXPFE"        /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_iron_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_expn"          field_ref="EXPC"        /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_organic_nitrogen_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_expp"          field_ref="EXPC"        /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_organic_phosphorus_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_expsi"         field_ref="EXPSI"        /> <!-- P1 (mol m-2 s-1) sinking_mole_flux_of_particulate_silicon_in_sea_water : In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid. -->
   <field id="CMIP6_fbddtalk"      field_ref="INTdtAlk"         /> <!-- P3 (mol m-2 s-1) integral_wrt_depth_of_tendency_of_sea_water_alkalinity_expressed_as_mole_equivalent_due_to_biological_processes : vertical integral of net biological terms in time rate of change of alkalinity -->
   <field id="CMIP6_fbddtdic"      field_ref="INTdtDIC"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_carbon_due_to_biological_processes : vertical integral of net biological terms in time rate of change of dissolved inorganic carbon -->
   <field id="CMIP6_fbddtdife"     field_ref="INTdtFer"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_iron_due_to_biological_processes : vertical integral of net biological terms in time rate of change of dissolved inorganic iron -->
   <field id="CMIP6_fbddtdin"      field_ref="INTdtDIN"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_nitrogen_due_to_biological_processes : vertical integral of net biological terms in time rate of change of nitrogen nutrients (e.g. NO3+NH4) -->
   <field id="CMIP6_fbddtdip"      field_ref="INTdtDIP"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_phosphorus_due_to_biological_processes : vertical integral of net biological terms in time rate of change of phosphorus -->
   <field id="CMIP6_fbddtdisi"     field_ref="INTdtSil"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_silicon_due_to_biological_processes : vertical integral of net biological terms in time rate of change of dissolved inorganic silicon -->
   <field id="CMIP6_fddtalk"       field_ref="dummy_XYO"        /> <!-- P2 (mol m-2 s-1) integral_wrt_depth_of_tendency_of_sea_water_alkalinity_expressed_as_mole_equivalent : vertical integral of net time rate of change of total alkalinity -->
   <field id="CMIP6_fddtdic"       field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_carbon : "Content" indicates a quantity per unit area.  "tendency_of_X" means derivative of X with respect to time. "Dissolved inorganic carbon" describes a family of chemical species in solution, including carbon dioxide, carbonic acid and the carbonate and bicarbonate anions. "Dissolved inorganic carbon" isthe term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models.  Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. -->
   <field id="CMIP6_fddtdife"      field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_iron : vertical integral of net time rate of change of dissolved inorganic iron -->
   <field id="CMIP6_fddtdin"       field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_nitrogen : Net time rate of change of nitrogen nutrients (e.g. NO3+NH4) -->
   <field id="CMIP6_fddtdip"       field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_phosphorus : vertical integral of net  time rate of change of phosphate -->
   <field id="CMIP6_fddtdisi"      field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_dissolved_inorganic_silicon : vertical integral of net time rate of change of dissolved inorganic silicon -->
   <field id="CMIP6_fediss"        field_ref="dummy_XYO"        /> <!-- P3 (mol m-3 s-1) tendency_of_mole_concentration_of_dissolved_iron_in_sea_water_due_to_dissolution_from_inorganic_particles : Dissolution, remineralization and desorption of iron back to the dissolved phase -->
   <field id="CMIP6_fescav"        field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_dissolved_iron_in_sea_water_due_to_scavenging_by_inorganic_particles : Dissolved Fe removed through nonbiogenic scavenging onto particles -->
   <field id="CMIP6_fg13co2"       field_ref="dummy_XY"         /> <!-- P1 (kg m-2 s-1) surface_downward_mass_flux_of_13C_dioxide_abiotic_analogue_expressed_as_13C : Gas exchange flux of abiotic 13CO2 (positive into ocean) -->
   <field id="CMIP6_fg14co2"       field_ref="dummy_XY"         /> <!-- P2 (kg m-2 s-1) surface_downward_mass_flux_of_14C_dioxide_abiotic_analogue_expressed_as_carbon : The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. In ocean biogeochemistry models, an "abiotic analogue" is used to simulate the effect on a modelled variable when biological effects on ocean carbon concentration and alkalinity are ignored. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "C" means the element carbon and "14C" is the radioactive isotope "carbon-14", having six protons and eight neutrons and used in radiocarbon dating. -->
   <field id="CMIP6_fg14co2abio"   field_ref="dummy_XYO"        /> <!-- P1 (kg m-2 s-1) surface_downward_mass_flux_of_14C_dioxide_abiotic_analogue_expressed_as_carbon : Gas exchange flux of abiotic 14CO2 (positive into ocean) -->
   <field id="CMIP6_fgco2"         field_ref="Cflx" > this * 12 * 1e-3 </field>  <!-- P1 (kg m-2 s-1) surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon : Gas exchange flux of CO2 (positive into ocean) -->
   <field id="CMIP6_fgco2abio"     field_ref="dummy_XYO"        /> <!-- P1 (kg m-2 s-1) surface_downward_mass_flux_of_carbon_dioxide_abiotic_analogue_expressed_as_carbon : Gas exchange flux of abiotic CO2 (positive into ocean) -->
   <field id="CMIP6_fgco2nat"      field_ref="dummy_XYO"        /> <!-- P1 (kg m-2 s-1) surface_downward_mass_flux_of_carbon_dioxide_natural_analogue_expressed_as_carbon : Gas exchange flux of natural CO2 (positive into ocean) -->
   <field id="CMIP6_fgdms"         field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) surface_upward_mole_flux_of_dimethyl_sulfide : Gas exchange flux of DMS (positive into atmosphere) -->
   <field id="CMIP6_fgo2"          field_ref="Oflx"         /> <!-- P1 (mol m-2 s-1) surface_downward_mole_flux_of_molecular_oxygen : Gas exchange flux of O2 (positive into ocean) -->
   <field id="CMIP6_frfe"          field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_iron_due_to_sedimentation : "Content" indicates a quantity per unit area.  The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  "tendency_of_X" means derivative of X with respect to time. -->
   <field id="CMIP6_fric"          field_ref="SedCal"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_inorganic_carbon_due_to_sedimentation : Inorganic Carbon loss to sediments -->
   <field id="CMIP6_frn"           field_ref="Sdenit"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_elemental_nitrogen_due_to_denitrification_and_sedimentation : "Content" indicates a quantity per unit area.  The specification of a physical process by the phrase due_to_process means that the quantity named is asingle term in a sum of terms which together compose the general quantity  named by omitting the phrase. 'Denitrification' is the conversion of nitrate into gasesous compounds such as nitric oxide, nitrous oxide and molecular nitrogen which are then emitted to the atmosphere.  'Sedimentation' is the sinking of particulate matter to the floor of a body of water. "tendency_of_X" means derivative of X with respect to time. -->
   <field id="CMIP6_froc"          field_ref="SedC"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_organic_carbon_due_to_sedimentation : Organic Carbon loss to sediments -->
   <field id="CMIP6_fsfe"          field_ref="IronSupply"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_iron_due_to_deposition_and_runoff_and_sediment_dissolution : Iron supply through deposition flux onto sea surface, runoff, coasts, sediments, etc -->
   <field id="CMIP6_fsn"           field_ref="NitrSupply"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_elemental_nitrogen_due_to_deposition_and_fixation_and_runoff : "Content" indicates a quantity per unit area.  The specification of a physical process by the phrase due_to_process means that the quantity named is asingle term in a sum of terms which together compose the general quantity  named by omitting the phrase. Deposition of nitrogen into the ocean is the sum of dry and wet depositionof nitrogen species onto the ocean surface from the atmosphere.  'Nitrogen fixation' means the production of ammonia from nitrogen gas. Organisms that fix nitrogen are termed 'diazotrophs'. Diazotrophic phytoplankton can fix atmospheric nitrogen, thus increasing the content of nitrogen in the ocean. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage."tendency_of_X" means derivative of X with respect to time. -->
   <field id="CMIP6_graz"          field_ref="GRAZ1" > this + GRAZ2 </field>  <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_grazing_of_phytoplankton : "tendency_of_X" means derivative of X with respect to time. Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. Phytoplankton are autotrophic prokaryotic or eukaryotic algae that live near the water surface where there is sufficient light to support photosynthesis. "Grazing of phytoplankton" means the grazing of phytoplankton by zooplankton. -->
   <field id="CMIP6_icfriver"      field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_inorganic_carbon_due_to_runoff_and_sediment_dissolution : Inorganic Carbon supply to ocean through runoff (separate from gas exchange) -->
   <field id="CMIP6_intdic"        field_ref="INTDIC"         /> <!-- P1 (kg m-2) ocean_mass_content_of_dissolved_inorganic_carbon : Vertically integrated DIC -->
   <field id="CMIP6_intdoc"        field_ref="DOC_E3T"         /> <!-- P1 (kg m-2) ocean_mass_content_of_dissolved_organic_carbon : Vertically integrated DOC (explicit pools only) -->
   <field id="CMIP6_intparag"      field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_aragonite_expressed_as_carbon_due_to_biological_production : Vertically integrated aragonite production -->
   <field id="CMIP6_intpbfe"       field_ref="INTPBFE"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_iron_due_to_biological_production : Vertically integrated biogenic iron production -->
   <field id="CMIP6_intpbn"        field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_nitrogen_due_to_biological_production : Vertically integrated biogenic nitrogen production -->
   <field id="CMIP6_intpbp"        field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_phosphorus_due_to_biological_production : Vertically integrated biogenic phosphorus production -->
   <field id="CMIP6_intpbsi"       field_ref="INTPBSI"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_silicon_due_to_biological_production : Vertically integrated biogenic silica production -->
   <field id="CMIP6_intpcalcite"   field_ref="INTPCAL"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_calcite_expressed_as_carbon_due_to_biological_production : Vertically integrated calcite production -->
   <field id="CMIP6_intpn2"        field_ref="INTNFIX"         /> <!-- P1 (mol m-2 s-1) tendency_of_ocean_mole_content_of_elemental_nitrogen_due_to_fixation : Vertically integrated nitrogen fixation -->
   <field id="CMIP6_intpoc"        field_ref="dummy_XY"         /> <!-- P2 (kg m-2) ocean_mass_content_of_particulate_organic_matter_expressed_as_carbon : Vertically integrated POC -->
   <field id="CMIP6_intpp"         field_ref="INTPP"         /> <!-- P1 (mol m-2 s-1) net_primary_mole_productivity_of_biomass_expressed_as_carbon_by_phytoplankton : Vertically integrated total primary (organic carbon) production by phytoplankton.  This should equal the sum of intpdiat+intpphymisc, but those individual components may be unavailable in some models. -->
   <field id="CMIP6_intppcalc"     field_ref="INTPCAL"         /> <!-- P1 (mol m-2 s-1) net_primary_mole_productivity_of_biomass_expressed_as_carbon_by_calcareous_phytoplankton : "Production of carbon" means the production of biomass expressed as the mass of carbon which it contains. Net primary production is the excess of gross primary production (rate of synthesis of biomass from inorganic precursors) by autotrophs ("producers"), for example, photosynthesis in plants or phytoplankton, over the rate at which the autotrophs themselves respire some of this biomass. "Productivity" means production per unit area. Phytoplankton are autotrophic prokaryotic or eukaryotic algae that live near the water surface where there is sufficient light to support photosynthesis. "Calcareous phytoplankton" are phytoplankton that produce calcite. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. Standard names also exist for aragonite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_intppdiat"     field_ref="INTPPPHY2"         /> <!-- P1 (mol m-2 s-1) net_primary_mole_productivity_of_biomass_expressed_as_carbon_by_diatoms : Vertically integrated primary (organic carbon) production by the diatom phytoplankton component alone -->
   <field id="CMIP6_intppdiaz"     field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) net_primary_mole_productivity_of_biomass_expressed_as_carbon_by_diazotrophs : "Production of carbon" means the production of biomass expressed as the mass of carbon which it contains. Net primary production is the excess of gross primary production (rate of synthesis of biomass from inorganic precursors) by autotrophs ("producers"), for example, photosynthesis in plants or phytoplankton, over the rate at which the autotrophs themselves respire some of this biomass. "Productivity" means production per unit area. In ocean modelling, diazotrophs are phytoplankton of the phylum cyanobacteria distinct from other phytoplankton groups in their ability to fix nitrogen gas in addition to nitrate and ammonium. Phytoplankton are autotrophic prokaryotic or eukaryotic algae that live near the water surface where there is sufficient light to support photosynthesis. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. -->
   <field id="CMIP6_intppmisc"     field_ref="INTPPPHY"         /> <!-- P1 (mol m-2 s-1) net_primary_mole_productivity_of_biomass_expressed_as_carbon_by_miscellaneous_phytoplankton : Vertically integrated total primary (organic carbon) production by other phytoplankton components alone -->
   <field id="CMIP6_intppnitrate"  field_ref="INTPNEW"         /> <!-- P1 (mol m-2 s-1) net_primary_mole_productivity_of_biomass_expressed_as_carbon_due_to_nitrate_utilization : Vertically integrated primary (organic carbon) production by phytoplankton based on nitrate uptake alone -->
   <field id="CMIP6_intpppico"     field_ref="dummy_XY"         /> <!-- P1 (mol m-2 s-1) net_primary_mole_productivity_of_biomass_expressed_as_carbon_by_picophytoplankton : "Production of carbon" means the production of biomass expressed as the mass of carbon which it contains. Net primary production is the excess of gross primary production (rate of synthesis of biomass from inorganic precursors) by autotrophs ("producers"), for example, photosynthesis in plants or phytoplankton, over the rate at which the autotrophs themselves respire some of this biomass. "Productivity" means production per unit area. Picophytoplankton are phytoplankton of less than 2 micrometers in size. Phytoplankton are autotrophic prokaryotic or eukaryotic algae that live near the water surface where there is sufficient light to support photosynthesis. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. -->
   <field id="CMIP6_limfecalc"     field_ref="dummy_XY"         /> <!-- P1 (1) iron_growth_limitation_of_calcareous_phytoplankton : "Calcareous phytoplankton" are phytoplankton that produce calcite. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Iron growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of iron) to the theoretical growth rate if there were no such limit on iron availability. -->
   <field id="CMIP6_limfediat"     field_ref="LDFeSFC"         /> <!-- P1 (1) iron_growth_limitation_of_diatoms : Diatoms are phytoplankton with an external skeleton made of silica. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Iron growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of iron) to the theoretical growth rate if there were no such limit on iron availability. -->
   <field id="CMIP6_limfediaz"     field_ref="dummy_XY"         /> <!-- P1 (1) iron_growth_limitation_of_diazotrophs : In ocean modelling, diazotrophs are phytoplankton of the phylum cyanobacteria distinct from other phytoplankton groups in their ability to fix nitrogen gas in addition to nitrate and ammonium. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Iron growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of iron) to the theoretical growth rate if there were no such limit on iron availability. -->
   <field id="CMIP6_limfemisc"     field_ref="LNFeSFC"         /> <!-- P1 (1) iron_growth_limitation_of_miscellaneous_phytoplankton : Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Miscellaneous phytoplankton" are all those phytoplankton that are not diatoms, diazotrophs, calcareous phytoplankton, picophytoplankton or other separately named components of the phytoplankton population. "Iron growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of iron) to the theoretical growth rate if there were no such limit on iron availability. -->
   <field id="CMIP6_limfepico"     field_ref="dummy_XY"         /> <!-- P1 (1) iron_growth_limitation_of_picophytoplankton : Picophytoplankton are phytoplankton of less than 2 micrometers in size. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Iron growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of iron) to the theoretical growth rate if there were no such limit on iron availability. -->
   <field id="CMIP6_limirrcalc"    field_ref="dummy_XY"         /> <!-- P1 (1) growth_limitation_of_calcareous_phytoplankton_due_to_solar_irradiance : "Calcareous phytoplankton" are phytoplankton that produce calcite.  Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. -->
   <field id="CMIP6_limirrdiat"    field_ref="LDlightSFC"         /> <!-- P1 (1) growth_limitation_of_diatoms_due_to_solar_irradiance : Diatoms are phytoplankton with an external skeleton made of silica. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. -->
   <field id="CMIP6_limirrdiaz"    field_ref="dummy_XY"         /> <!-- P1 (1) growth_limitation_of_diazotrophs_due_to_solar_irradiance : In ocean modelling, diazotrophs are phytoplankton of the phylum cyanobacteria distinct from other phytoplankton groups in their ability to fix nitrogen gas in addition to nitrate and ammonium. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. -->
   <field id="CMIP6_limirrmisc"    field_ref="LNlightSFC"         /> <!-- P1 (1) growth_limitation_of_miscellaneous_phytoplankton_due_to_solar_irradiance : Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Miscellaneous phytoplankton" are all those phytoplankton that are not diatoms, diazotrophs, calcareous phytoplankton, picophytoplankton or other separately named components of the phytoplankton population. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. -->
   <field id="CMIP6_limirrpico"    field_ref="dummy_XY"         /> <!-- P1 (1) growth_limitation_of_picophytoplankton_due_to_solar_irradiance : Picophytoplankton are phytoplankton of less than 2 micrometers in size. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. -->
   <field id="CMIP6_limncalc"      field_ref="dummy_XY"         /> <!-- P1 (1) nitrogen_growth_limitation_of_calcareous_phytoplankton : "Calcareous phytoplankton" are phytoplankton that produce calcite. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Nitrogen growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of nitrogen) to the theoretical growth rate if there were no such limit on nitrogen availability. -->
   <field id="CMIP6_limndiat"      field_ref="dummy_XY"         /> <!-- P1 (1) nitrogen_growth_limitation_of_diatoms : Diatoms are phytoplankton with an external skeleton made of silica. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Nitrogen growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of nitrogen) to the theoretical growth rate if there were no such limit on nitrogen availability. -->
   <field id="CMIP6_limndiaz"      field_ref="LDnutSFC"         /> <!-- P1 (1) nitrogen_growth_limitation_of_diazotrophs : In ocean modelling, diazotrophs are phytoplankton of the phylum cyanobacteria distinct from other phytoplankton groups in their ability to fix nitrogen gas in addition to nitrate and ammonium. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Nitrogen growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of nitrogen) to the theoretical growth rate if there were no such limit on nitrogen availability. -->
   <field id="CMIP6_limnmisc"      field_ref="LNnutSFC"         /> <!-- P1 (1) nitrogen_growth_limitation_of_miscellaneous_phytoplankton : Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Miscellaneous phytoplankton" are all those phytoplankton that are not diatoms, diazotrophs, calcareous phytoplankton, picophytoplankton or other separately named components of the phytoplankton population. "Nitrogen growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of nitrogen) to the theoretical growth rate if there were no such limit on nitrogen availability. -->
   <field id="CMIP6_limnpico"      field_ref="dummy_XY"         /> <!-- P1 (1) nitrogen_growth_limitation_of_picophytoplankton : Picophytoplankton are phytoplankton of less than 2 micrometers in size. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Nitrogen growth limitation" means the ratio of the growth rate of a species population in the environment (where there is a finite availability of nitrogen) to the theoretical growth rate if there were no such limit on nitrogen availability. -->
   <field id="CMIP6_nh4"           field_ref="NH4_E3T"    expr="@NH4_E3T / @e3t * 1e-3" > NH4_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_ammonium_in_sea_water : Mole concentration means moles (amount of substance) per unit volume and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y. -->
   <field id="CMIP6_nh4os"         field_ref="NH4SFC_E3T" expr="@NH4SFC_E3T / @E3TSFC * 1e-3" > NH4SFC_E3T / E3TSFC * 1e-3 </field>  <!-- P2 (mol m-3) mole_concentration_of_ammonium_in_sea_water : Mole concentration means moles (amount of substance) per unit volume and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y. -->
   <field id="CMIP6_no3"           field_ref="NO3_E3T"    expr="@NO3_E3T / @e3t * 1e-3" > NO3_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_nitrate_in_sea_water : Mole concentration means moles (amount of substance) per unit volume and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y. -->
   <field id="CMIP6_no3os"         field_ref="NO3SFC_E3T" expr="@NO3SFC_E3T / @E3TSFC * 1e-3" > NO3SFC_E3T / E3TSFC * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_nitrate_in_sea_water : Mole concentration means moles (amount of substance) per unit volume and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y. -->
   <field id="CMIP6_o2"            field_ref="O2_E3T"     expr="@O2_E3T / @e3t * 1e-3"  > O2_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_dissolved_molecular_oxygen_in_sea_water : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. -->
   <field id="CMIP6_o2min"         field_ref="O2MIN"            />  <!-- P1 (mol m-3) mole_concentration_of_dissolved_molecular_oxygen_in_sea_water_at_shallowest_local_minimum_in_vertical_profile : 'Mole concentration' means number of moles per unit volume, also called "molarity", and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The concentration of any chemical species, whether particulate or dissolved, may vary with depth in the ocean.  A depth profile may go through one or more local minima in concentration. The mole_concentration_of_molecular_oxygen_in_sea_water_at_shallowest_local_minimum_in_vertical_profile is the mole concentration of oxygen at the local minimum in the concentration profile that occurs closest to the sea surface. -->
   <field id="CMIP6_o2os"          field_ref="O2SFC_E3T"  expr="@O2SFC_E3T / @E3TSFC * 1e-3" >  O2SFC_E3T / E3TSFC * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_molecular_oxygen_in_sea_water : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. -->
   <field id="CMIP6_o2sat"         field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_dissolved_molecular_oxygen_in_sea_water_at_saturation : "Mole concentration at saturation" means the mole concentration in a saturated solution. Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". -->
   <field id="CMIP6_o2satos"       field_ref="dummy_XY"         /> <!-- P1 (mol m-3) mole_concentration_of_dissolved_molecular_oxygen_in_sea_water_at_saturation : "Mole concentration at saturation" means the mole concentration in a saturated solution. Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". -->
   <field id="CMIP6_ocfriver"      field_ref="dummy_XY"         /> <!-- P3 (mol m-2 s-1) tendency_of_ocean_mole_content_of_organic_carbon_due_to_runoff_and_sediment_dissolution : Organic Carbon supply to ocean through runoff (separate from gas exchange) -->
   <field id="CMIP6_parag"         field_ref="dummy_XYO"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_aragonite_expressed_as_carbon_in_sea_water_due_to_biological_production : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  "tendency_of_X" means derivative of X with respect to time.  Aragonite is a mineral that is a polymorph of calcium carbonate. The chemical formula of aragonite is CaCO3. Standard names also exist for calcite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_pbfe"          field_ref="PFeN" > this + PFeD </field>  <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_iron_in_sea_water_due_to_biological_production : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  "tendency_of_X" means derivative of X with respect to time. -->
   <field id="CMIP6_pbsi"          field_ref="PBSi"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_silicon_in_sea_water_due_to_biological_production : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  "tendency_of_X" means derivative of X with respect to time. -->
   <field id="CMIP6_pcalc"         field_ref="PCAL"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_calcite_expressed_as_carbon_in_sea_water_due_to_biological_production : 'Mole concentration' means number of moles per unit volume, also called"molarity", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  "tendency_of_X" means derivative of X with respect to time.  Calcite is a mineral that is a polymorph of calcium carbonate. Thechemical formula of calcite is CaCO3. Standard names also exist for aragonite, another polymorph of calcium carbonate. -->
   <field id="CMIP6_ph"            field_ref="PH"        /> <!-- P1 (1) sea_water_ph_reported_on_total_scale : negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1. -->
   <field id="CMIP6_phabio"        field_ref="dummy_XYO"        /> <!-- P1 (1) sea_water_ph_abiotic_analogue_reported_on_total_scale : negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1 (abiotic component).. -->
   <field id="CMIP6_phabioos"      field_ref="dummy_XY"         /> <!-- P2 (1) sea_water_ph_abiotic_analogue_reported_on_total_scale : negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1. -->
   <field id="CMIP6_phnat"         field_ref="dummy_XYO"        /> <!-- P1 (1) sea_water_ph_natural_analogue_reported_on_total_scale : negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1 (natural component). -->
   <field id="CMIP6_phnatos"       field_ref="dummy_XY"         /> <!-- P2 (1) sea_water_ph_natural_analogue_reported_on_total_scale : negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1. -->
   <field id="CMIP6_phos"          field_ref="PHSFC"         /> <!-- P1 (1) sea_water_ph_reported_on_total_scale : negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1. -->
   <field id="CMIP6_phyc"          field_ref="PHY_E3T"  expr="@PHY_E3T / @e3t * 1e-3 + @PHY2_E3T / @e3t * 1e-3" > PHY_E3T / e3t * 1e-3 + PHY2_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_carbon_in_sea_water : sum of phytoplankton carbon component concentrations.  In most (all?) cases this is the sum of phycdiat and phycmisc (i.e., "Diatom Carbon Concentration" and "Non-Diatom Phytoplankton Carbon Concentration" -->
   <field id="CMIP6_phycalc"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_calcareous_phytoplankton_expressed_as_carbon_in_sea_water : carbon concentration from calcareous (calcite-producing) phytoplankton component alone -->
   <field id="CMIP6_phycalcos"     field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_calcareous_phytoplankton_expressed_as_carbon_in_sea_water : carbon concentration from calcareous (calcite-producing) phytoplankton component alone -->
   <field id="CMIP6_phycos"        field_ref="PHYSFC_E3T" expr="@PHYSFC_E3T / @E3TSFC * 1e-3 + @PHY2SFC_E3T / @E3TSFC * 1e-3" > PHYSFC_E3T / E3TSFC * 1e-3 + PHY2SFC_E3T / E3TSFC * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_carbon_in_sea_water : sum of phytoplankton carbon component concentrations.  In most (all?) cases this is the sum of phycdiat and phycmisc (i.e., "Diatom Carbon Concentration" and "Non-Diatom Phytoplankton Carbon Concentration" -->
   <field id="CMIP6_phydiat"       field_ref="PHY2_E3T"   expr="@PHY2_E3T / @e3t * 1e-3" > PHY2_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_diatoms_expressed_as_carbon_in_sea_water : carbon from the diatom phytoplankton component concentration alone -->
   <field id="CMIP6_phydiatos"     field_ref="PHY2SFC_E3T"   expr="@PHY2SFC_E3T / @E3TSFC * 1e-3" > PHY2SFC_E3T / E3TSFC * 1e-3 </field>  <!-- P2 (mol m-3) mole_concentration_of_diatoms_expressed_as_carbon_in_sea_water : carbon from the diatom phytoplankton component concentration alone -->
   <field id="CMIP6_phydiaz"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_diazotrophs_expressed_as_carbon_in_sea_water : carbon concentration from the diazotrophic phytoplankton component alone -->
   <field id="CMIP6_phydiazos"     field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_diazotrophs_expressed_as_carbon_in_sea_water : carbon concentration from the diazotrophic phytoplankton component alone -->
   <field id="CMIP6_phyfe"         field_ref="NFe_E3T"  expr="@NFe_E3T / @e3t * 1e-3 + @DFe_E3T / @e3t * 1e-3" > NFe_E3T / e3t * 1e-3 + DFe_E3T / e3t * 1e-3 </field>  <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_iron_in_sea_water : sum of phytoplankton iron component concentrations -->
   <field id="CMIP6_phyfeos"       field_ref="NFeSFC_E3T" expr="@NFeSFC_E3T / @E3TSFC * 1e-3 + @DFeSFC_E3T / @E3TSFC * 1e-3"  > NFeSFC_E3T / E3TSFC * 1e-3 + DFeSFC_E3T / E3TSFC * 1e-3 </field> <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_iron_in_sea_water : sum of phytoplankton iron component concentrations -->
   <field id="CMIP6_phymisc"       field_ref="PHY_E3T"   expr="@PHY_E3T / @e3t * 1e-3" > PHY_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_miscellaneous_phytoplankton_expressed_as_carbon_in_sea_water : carbon concentration from additional phytoplankton component alone -->
   <field id="CMIP6_phymiscos"     field_ref="PHYSFC_E3T"   expr="@PHYSFC_E3T / @E3TSFC * 1e-3" > PHYSFC_E3T / E3TSFC * 1e-3 </field>  <!-- P2 (mol m-3) mole_concentration_of_miscellaneous_phytoplankton_expressed_as_carbon_in_sea_water : carbon concentration from additional phytoplankton component alone -->
   <field id="CMIP6_phyn"          field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_nitrogen_in_sea_water : sum of phytoplankton nitrogen component concentrations -->
   <field id="CMIP6_phynos"        field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_nitrogen_in_sea_water : sum of phytoplankton nitrogen component concentrations -->
   <field id="CMIP6_phyp"          field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_phosphorus_in_sea_water : sum of phytoplankton phosphorus components -->
   <field id="CMIP6_phypico"       field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_picophytoplankton_expressed_as_carbon_in_sea_water : carbon concentration from the picophytoplankton (<2 um) component alone -->
   <field id="CMIP6_phypicoos"     field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_picophytoplankton_expressed_as_carbon_in_sea_water : carbon concentration from the picophytoplankton (<2 um) component alone -->
   <field id="CMIP6_phypos"        field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_phosphorus_in_sea_water : sum of phytoplankton phosphorus components -->
   <field id="CMIP6_physi"         field_ref="DSi_E3T"  expr="@DSi_E3T / @e3t * 1e-3" >  DSi_E3T / e3t * 1e-3 </field> <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_silicon_in_sea_water : sum of phytoplankton silica component concentrations -->
   <field id="CMIP6_physios"       field_ref="DSiSFC_E3T" expr="@DSiSFC_E3T / @E3TSFC * 1e-3" >  DSiSFC_E3T / E3TSFC * 1e-3 </field>   <!-- P2 (mol m-3) mole_concentration_of_phytoplankton_expressed_as_silicon_in_sea_water : sum of phytoplankton silica component concentrations -->
   <field id="CMIP6_pnitrate"      field_ref="TPNEW"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_nitrate_utilization : Primary (organic carbon) production by phytoplankton due to nitrate uptake alone -->
   <field id="CMIP6_po4"           field_ref="PO4_E3T" expr="@PO4_E3T / @e3t * 1e-3" >  PO4_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_phosphorus_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Dissolved inorganic phosphorus" means the sum of all inorganic phosphorus in solution (including phosphate, hydrogen phosphate, dihydrogen phosphate, and phosphoric acid). -->
   <field id="CMIP6_po4os"         field_ref="PO4SFC_E3T" expr="@PO4SFC_E3T / @E3TSFC * 1e-3" >  PO4SFC_E3T / E3TSFC * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_phosphorus_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Dissolved inorganic phosphorus" means the sum of all inorganic phosphorus in solution (including phosphate, hydrogen phosphate, dihydrogen phosphate, and phosphoric acid). -->
   <field id="CMIP6_pon"           field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_particulate_organic_matter_expressed_as_nitrogen_in_sea_water : sum of particulate organic nitrogen component concentrations -->
   <field id="CMIP6_ponos"         field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_particulate_organic_matter_expressed_as_nitrogen_in_sea_water : sum of particulate organic nitrogen component concentrations -->
   <field id="CMIP6_pop"           field_ref="dummy_XYO"        /> <!-- P2 (mol m-3) mole_concentration_of_particulate_organic_matter_expressed_as_phosphorus_in_sea_water : sum of particulate organic phosphorus component concentrations -->
   <field id="CMIP6_popos"         field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_particulate_organic_matter_expressed_as_phosphorus_in_sea_water : sum of particulate organic phosphorus component concentrations -->
   <field id="CMIP6_pp"            field_ref="TPP"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production : total primary (organic carbon) production by phytoplankton -->
   <field id="CMIP6_ppcalc"        field_ref="dummy_XYO"        /> <!-- P3 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production_by_calcareous_phytoplankton : Primary (organic carbon) production by calcareous phytoplankton components alone -->
   <field id="CMIP6_ppdiat"        field_ref="PPPHY2"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production_by_diatoms : Primary (organic carbon) production by diatom phytoplankton components alone -->
   <field id="CMIP6_ppdiaz"        field_ref="dummy_XYO"        /> <!-- P3 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production_by_diazotrophs : Primary (organic carbon) production by the diazotrophic phytoplankton component alone -->
   <field id="CMIP6_ppmisc"        field_ref="PPPHY"        /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production_by_miscellaneous_phytoplankton : Primary (organic carbon) production by other phytoplankton components alone -->
   <field id="CMIP6_ppos"          field_ref="TPPSFC"         /> <!-- P1 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production : total primary (organic carbon) production by phytoplankton -->
   <field id="CMIP6_pppico"        field_ref="dummy_XYO"        /> <!-- P3 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production_by_picophytoplankton : Primary (organic carbon) production by the picophytoplankton (<2 um) component alone -->
   <field id="CMIP6_remoc"         field_ref="REMIN"        /> <!-- P2 (mol m-3 s-1) tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_remineralization : "tendency_of_X" means derivative of X with respect to time. Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. Remineralization is the degradation of organic matter into inorganic forms of carbon, nitrogen, phosphorus and other micronutrients, which consumes oxygen and releases energy. -->
   <field id="CMIP6_si"            field_ref="Si_E3T"  expr="@Si_E3T / @e3t * 1e-3" >  Si_E3T / e3t * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_silicon_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Dissolved inorganic silicon" means the sum of all inorganic silicon in solution (including silicic acid and its first dissociated anion SiO(OH)3-). -->
   <field id="CMIP6_sios"          field_ref="SiSFC_E3T" expr="@SiSFC_E3T / @E3TSFC * 1e-3" >  SiSFC_E3T / E3TSFC * 1e-3 </field> <!-- P1 (mol m-3) mole_concentration_of_dissolved_inorganic_silicon_in_sea_water : Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Dissolved inorganic silicon" means the sum of all inorganic silicon in solution (including silicic acid and its first dissociated anion SiO(OH)3-). -->
   <field id="CMIP6_spco2"         field_ref="pCO2sea"   >  this * 0.101325  </field> <!-- P1 (Pa) surface_partial_pressure_of_carbon_dioxide_in_sea_water : The surface called "surface" means the lower boundary of the atmosphere. The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure of a gaseous constituent of air is the pressure which it alone would exert with unchanged temperature and number of moles per unit volume. The chemical formula for carbon dioxide is CO2. -->
   <field id="CMIP6_spco2abio"     field_ref="dummy_XY"         /> <!-- P1 (Pa) surface_carbon_dioxide_abiotic_analogue_partial_pressure_difference_between_sea_water_and_air : The surface called "surface" means the lower boundary of the atmosphere. The chemical formula for carbon dioxide is CO2. In ocean biogeochemistry models, an "abiotic analogue" is used to simulate the effect on a modelled variable when biological effects on ocean carbon concentration and alkalinity are ignored. The partial pressure of a gaseous constituent of air is the pressure which it alone would exert with unchanged temperature and number of moles per unit volume. The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure difference between sea water and air is positive when the partial pressure of the dissolved gas in sea water is greater than the partial pressure in air. -->
   <field id="CMIP6_spco2nat"      field_ref="dummy_XY"         /> <!-- P1 (Pa) surface_carbon_dioxide_natural_analogue_partial_pressure_difference_between_sea_water_and_air : The surface called "surface" means the lower boundary of the atmosphere. The chemical formula for carbon dioxide is CO2. In ocean biogeochemistry models, a "natural analogue" is used to simulate the effect on a modelled variable of imposing preindustrial atmospheric carbon dioxide concentrations, even when the model as a whole may be subjected to varying forcings. The partial pressure of a gaseous constituent of air is the pressure which it alone would exert with unchanged temperature and number of moles per unit volume. The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure difference between sea water and air is positive when the partial pressure of the dissolved gas in sea water is greater than the partial pressure in air. -->
   <field id="CMIP6_talk"          field_ref="Alkalini_E3T" expr="@Alkalini_E3T / @e3t * 1e-3" > Alkalini_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) sea_water_alkalinity_expressed_as_mole_equivalent : total alkalinity equivalent concentration (including carbonate, borate, phosphorus, silicon, and nitrogen components) -->
   <field id="CMIP6_talknat"       field_ref="Alkalini_E3T" expr="@Alkalini_E3T / @e3t * 1e-3" > Alkalini_E3T / e3t * 1e-3 </field> <!-- P1 (mol m-3) sea_water_alkalinity_natural_analogue_expressed_as_mole_equivalent : total alkalinity equivalent concentration (including carbonate, borate, phosphorus, silicon, and nitrogen components) at preindustrial atmospheric xCO2 -->
   <field id="CMIP6_talknatos"     field_ref="AlkaliniSFC_E3T" expr="@AlkaliniSFC_E3T / @E3TSFC * 1e-3" > AlkaliniSFC_E3T / E3TSFC * 1e-3 </field> <!-- P1 (mol m-3) sea_water_alkalinity_natural_analogue_expressed_as_mole_equivalent : total alkalinity equivalent concentration (including carbonate, borate, phosphorus, silicon, and nitrogen components) at preindustrial atmospheric xCO2 -->
   <field id="CMIP6_talkos"          field_ref="AlkaliniSFC_E3T" expr="@AlkaliniSFC_E3T / @E3TSFC * 1e-3" > AlkaliniSFC_E3T / E3TSFC * 1e-3 </field> <!-- P1 (mol m-3) sea_water_alkalinity_expressed_as_mole_equivalent : total alkalinity equivalent concentration (including carbonate, borate, phosphorus, silicon, and nitrogen components) -->
   <field id="CMIP6_zmeso"         field_ref="ZOO2_E3T" expr="@ZOO2_E3T / @e3t * 1e-3" > ZOO2_E3T / e3t * 1e-3 </field>  <!-- P1 (mol m-3) mole_concentration_of_mesozooplankton_expressed_as_carbon_in_sea_water : carbon  concentration from mesozooplankton (20-200 um) component alone -->
   <field id="CMIP6_zmesoos"       field_ref="ZOO2SFC_E3T" expr="@ZOO2SFC_E3T / @E3TSFC * 1e-3" > ZOO2SFC_E3T / E3TSFC * 1e-3 </field>   <!-- P2 (mol m-3) mole_concentration_of_mesozooplankton_expressed_as_carbon_in_sea_water : carbon  concentration from mesozooplankton (20-200 um) component alone -->
   <field id="CMIP6_zmicro"        field_ref="ZOO_E3T" expr="@ZOO_E3T / @e3t * 1e-3" > ZOO_E3T / e3t * 1e-3 </field>   <!-- P1 (mol m-3) mole_concentration_of_microzooplankton_expressed_as_carbon_in_sea_water : carbon  concentration from the microzooplankton (<20 um) component alone -->
   <field id="CMIP6_zmicroos"      field_ref="ZOOSFC_E3T" expr="@ZOOSFC_E3T / @E3TSFC * 1e-3" > ZOOSFC_E3T / E3TSFC * 1e-3 </field> <!-- P2 (mol m-3) mole_concentration_of_microzooplankton_expressed_as_carbon_in_sea_water : carbon  concentration from the microzooplankton (<20 um) component alone -->
   <field id="CMIP6_zmisc"         field_ref="dummy_XYO"        /> <!-- P1 (mol m-3) mole_concentration_of_miscellaneous_zooplankton_expressed_as_carbon_in_sea_water : carbon from additional zooplankton component concentrations alone (e.g. Micro, meso).  Since the models all have different numbers of components, this variable has been included to provide a check for intercomparison between models since some phytoplankton groups are supersets. -->
   <field id="CMIP6_zmiscos"       field_ref="dummy_XY"         /> <!-- P2 (mol m-3) mole_concentration_of_miscellaneous_zooplankton_expressed_as_carbon_in_sea_water : carbon from additional zooplankton component concentrations alone (e.g. Micro, meso).  Since the models all have different numbers of components, this variable has been included to provide a check for intercomparison between models since some phytoplankton groups are supersets. -->
   <field id="CMIP6_zo2min"        field_ref="ZO2MIN"         /> <!-- P1 (m) depth_at_shallowest_local_minimum_in_vertical_profile_of_mole_concentration_of_dissolved_molecular_oxygen_in_sea_water : Depth of vertical minimum concentration of dissolved oxygen gas (if two, then the shallower) -->
   <field id="CMIP6_zooc"          field_ref="ZOO_E3T" expr="@ZOO_E3T / @e3t * 1e-3 + @ZOO2_E3T / @e3t * 1e-3" > ZOO_E3T / e3t * 1e-3 + ZOO2_E3T / e3t * 1e-3   </field>  <!-- P1 (mol m-3) mole_concentration_of_zooplankton_expressed_as_carbon_in_sea_water : sum of zooplankton carbon component concentrations -->
   <field id="CMIP6_zoocos"        field_ref="ZOOSFC_E3T" expr="@ZOOSFC_E3T / @E3TSFC * 1e-3 + @ZOO2SFC_E3T / @E3TSFC * 1e-3" > ZOOSFC_E3T / E3TSFC * 1e-3 + ZOO2SFC_E3T / E3TSFC * 1e-3   </field>  <!-- P2 (mol m-3) mole_concentration_of_zooplankton_expressed_as_carbon_in_sea_water : sum of zooplankton carbon component concentrations -->
   <field id="CMIP6_zsatarag"      field_ref="dummy_XY"         /> <!-- P1 (m) minimum_depth_of_aragonite_undersaturation_in_sea_water : Depth of aragonite saturation horizon (0 if < surface, "missing"  if > bottom, if two, then the shallower) -->
   <field id="CMIP6_zsatcalc"      field_ref="dummy_XY"         /> <!-- P1 (m) minimum_depth_of_calcite_undersaturation_in_sea_water : Depth of calcite saturation horizon (0 if < surface, "missing" if > bottom, if two, then the shallower) -->
</field_definition>
</context>