!
#define TRACEBACK write (gol,'("in ",a," (",a,", line",i5,")")') rname, __FILE__, __LINE__; call goErr
#define IF_NOTOK_RETURN(action) if (status/=0) then; TRACEBACK; action; return; end if
#define IF_ERROR_RETURN(action) if (status> 0) then; TRACEBACK; action; return; end if
!
#include "tm5.inc"
!
!-----------------------------------------------------------------------------
!                    TM5                                                     !
!-----------------------------------------------------------------------------
!BOP
!
! !MODULE:      EMISSION_NH3
!
! !DESCRIPTION: Perform NH3 emissions needed for TM5 CBM4 version.
!\\
!\\
! !INTERFACE: 
!
MODULE EMISSION_NH3
  !
  ! !USES:
  !
  use GO,            only : gol, goErr, goPr
  use tm5_distgrid,  only : dgrid, get_distgrid, scatter, gather
  use dims,          only : nregions, idate, okdebug
  use global_types,  only : emis_data, d3_data
  use emission_read, only : used_providers, has_emis

  implicit none
  private
  !
  ! !PUBLIC MEMBER FUNCTIONS:
  !
  public   :: Emission_NH3_init     ! allocate
  public   :: Emission_nh3_declare  ! read monthly input
  public   :: Emission_nh3_apply    ! distribute & add emissions to tracer array
  public   :: Emission_nh3_done     ! deallocate
  !
  ! !PRIVATE DATA MEMBERS:
  !
  character(len=*), parameter  ::  mname = 'emission_nh3'

  type(emis_data), dimension(:,:), allocatable :: nh3_emis_2d
  type(d3_data),   dimension(:,:), allocatable :: nh3_emis_3d

  integer              :: nh3_3dsec,      nh3_2dsec
  logical, allocatable :: has_data_3d(:), has_data_2d(:)
  !
  ! !REVISION HISTORY: 
  !    1 Oct 2010 - Achim Strunk  - overhaul for AR5
  !    1 Dec 2011 - Narcisa Banda - added EDGAR 4
  !   25 Jun 2012 - P. Le Sager   - adapted for lon-lat MPI domain decomposition
  !
  ! !REMARKS:
  !
  !EOP
  !------------------------------------------------------------------------

CONTAINS

  !--------------------------------------------------------------------------
  !                    TM5                                                  !
  !--------------------------------------------------------------------------
  !BOP
  !
  ! !IROUTINE:    EMISSION_NH3_INIT
  !
  ! !DESCRIPTION: Allocate space needed to handle the emissions
  !\\
  !\\
  ! !INTERFACE:
  !
  SUBROUTINE EMISSION_NH3_INIT( status )
    !
    ! !USES:
    !
    use dims,          only : lm
    use emission_read, only : providers_def, numb_providers, ed42_nsect_nh3
    use emission_data, only : LAR5BMB
    use emission_read, only : n_ar5_ant_sec, n_ar5_shp_sec, n_ar5_air_sec, n_ar5_bmb_sec
    use emission_read, only : ar5_cat_ant,   ar5_cat_shp,   ar5_cat_air,   ar5_cat_bmb
    !
    ! !OUTPUT PARAMETERS:
    !
    integer, intent(out)     ::  status
    !
    ! !REVISION HISTORY: 
    !    1 Oct 2010 - Achim Strunk - v0
    !   25 Jun 2012 - P. Le Sager - adapted for lon-lat MPI domain decomposition
    !
    !EOP
    !------------------------------------------------------------------------
    !BOC

    character(len=*), parameter ::  rname = mname//'/Emission_NH3_Init'
    integer                     ::  region
    integer                     ::  lmr, lsec, lprov, i1, i2, j1, j2
    
    ! --- begin --------------------------------------
    
    status = 0
    if(.not. has_emis) return
    
    ! nb of sectors
    nh3_2dsec = 0
    nh3_3dsec = 0
    do lprov = 1, numb_providers
       if (count(used_providers.eq.providers_def(lprov)%name)/=0) then 
          
          if (trim(providers_def(lprov)%name) .eq. 'AR5') then
             
             ! nb of available sectors in AR5 depends on category
             nh3_2dsec = nh3_2dsec + n_ar5_ant_sec*count('NH3'.eq.ar5_cat_ant) + &
                                     n_ar5_shp_sec*count('NH3'.eq.ar5_cat_shp)

             if (LAR5BMB) nh3_2dsec = nh3_2dsec + n_ar5_bmb_sec*count('NH3'.eq.ar5_cat_bmb)
             
             nh3_3dsec = nh3_3dsec + n_ar5_air_sec*count('NH3'.eq.ar5_cat_air)

          elseif (trim(providers_def(lprov)%name) .eq. 'ED42') then
             nh3_2dsec = nh3_2dsec + ed42_nsect_nh3
             ! no 3d sectors in EDGAR 4.2
          else
             nh3_2dsec = nh3_2dsec + providers_def(lprov)%nsect2d
             nh3_3dsec = nh3_3dsec + providers_def(lprov)%nsect3d
          endif
       endif
    enddo

    ! basic check
    if (nh3_2dsec == 0) then
       write(gol,*) "WARNING - there is no 2D sectors for NH3 !"; call goPr
    end if
    if (nh3_3dsec == 0) then
       write(gol,*) "WARNING - there is no 3D sectors for NH3 !"; call goPr
    end if

    allocate( nh3_emis_2d( nregions, nh3_2dsec ) )
    allocate( nh3_emis_3d( nregions, nh3_3dsec ) )
    allocate( has_data_2d(nh3_2dsec)) ; has_data_2d=.false.
    allocate( has_data_3d(nh3_3dsec)) ; has_data_3d=.false.


    ! allocate information arrays (2d and 3d)
    do region=1,nregions

       CALL GET_DISTGRID( dgrid(region), I_STRT=i1, I_STOP=i2, J_STRT=j1, J_STOP=j2 )          
       lmr = lm(region)
       
       do lsec=1,nh3_2dsec
          allocate( nh3_emis_2d(region,lsec)%surf(i1:i2,j1:j2) )
       end do

       do lsec=1,nh3_3dsec
          allocate( nh3_emis_3d(region,lsec)%d3(i1:i2,j1:j2,lmr) )
       end do

    enddo

    ! ok
    status = 0

  END SUBROUTINE EMISSION_NH3_INIT
  !EOC

  !--------------------------------------------------------------------------
  !                    TM5                                                  !
  !--------------------------------------------------------------------------
  !BOP
  !
  ! !IROUTINE:    EMISSION_NH3_DONE
  !
  ! !DESCRIPTION: Free space after handling of the emissions
  !\\
  !\\
  ! !INTERFACE:
  !
  SUBROUTINE EMISSION_NH3_DONE( status )
    !
    ! !OUTPUT PARAMETERS:
    !
    integer, intent(out)           ::  status
    !
    ! !REVISION HISTORY: 
    !    1 Oct 2010 - Achim Strunk - v0
    !
    !EOP
    !------------------------------------------------------------------------
    !BOC

    character(len=*), parameter    ::  rname = mname//'/Emission_NH3_Done'
    integer                        :: region, lsec

    ! --- begin ---------------------------------
    
    status = 0
    if(.not. has_emis) return

    do region = 1, nregions
       do lsec=1,nh3_2dsec
          deallocate( nh3_emis_2d(region,lsec)%surf )
       end do
       do lsec=1,nh3_3dsec
          deallocate( nh3_emis_3d(region,lsec)%d3 )
       end do
    end do

    deallocate( nh3_emis_2d, nh3_emis_3d )
    deallocate( has_data_2d, has_data_3d )

    status = 0

  END SUBROUTINE EMISSION_NH3_DONE
  !EOC

  !--------------------------------------------------------------------------
  !                    TM5                                                  !
  !--------------------------------------------------------------------------
  !BOP
  !
  ! !IROUTINE:    EMISSION_NH3_DECLARE
  !
  ! !DESCRIPTION: Opens, reads and evaluates input files (per month). 
  !               Provides emissions on 2d/3d-arrays which are then added
  !               to tracers in routine *apply. 
  !\\
  !\\
  ! !INTERFACE:
  !
  SUBROUTINE EMISSION_NH3_DECLARE( status )
    !
    ! !USES:
    !
    use toolbox,       only : coarsen_emission
    use partools,      only : isRoot, par_broadcast
    use dims,          only : im, jm, lm, idate, sec_month, nlon360, nlat180, iglbsfc
    use chem_param,    only : xmnh3
    use emission_data, only : msg_emis, LAR5BMB
    ! ---------------- AR5 - EDGAR 4 - ETC. --------------------
    use emission_data, only : emis_input_year
    use emission_data, only : emis_input_dir_mac
    use emission_data, only : emis_input_dir_retro
    use emission_data, only : emis_input_dir_gfed
    use emission_data, only : emis_input_dir_ed4

    use emission_read, only : emission_ar5_regrid_aircraft

    use emission_read, only : emission_ar5_ReadSector
    use emission_read, only : emission_macc_ReadSector
    use emission_read, only : emission_ed4_ReadSector
    use emission_read, only : emission_gfed_ReadSector
    use emission_read, only : emission_retro_ReadSector

    use emission_read, only : sectors_def, numb_sectors
    use emission_read, only : ar5_dim_3ddata
    use emission_read, only : ed42_nh3_sectors
    !
    ! !OUTPUT PARAMETERS:
    !
    integer, intent(out)        ::  status
    !
    ! !REVISION HISTORY: 
    !    1 Oct 2010 - Achim Strunk  - adapted for AR5
    !    1 Dec 2011 - Narcisa Banda - added EDGAR 4
    !   25 Jun 2012 - P. Le Sager   - adapted for lon-lat MPI domain decomposition
    !
    !EOP
    !------------------------------------------------------------------------
    !BOC

    character(len=*), parameter :: rname = mname//'/emission_nh3_declare'
    integer                     :: region, hasData
    integer,parameter           :: add_field=0
    integer,parameter           :: amonth=2
    integer                     :: imr, jmr, lmr, lsec

    ! AR5
    real,dimension(:,:,:),  allocatable  :: field3d,    field3d2
    type(d3_data)                        :: emis3d,     work(nregions)
    type(emis_data)                      :: wrk2D(nregions)
    integer                              :: seccount2d, seccount3d

    ! --- begin -----------------------------------------
    
    status = 0
    if(.not. has_emis) return

    write(gol,'(" EMISS-INFO ------------- read NH3 emissions -------------")'); call goPr
    
    ! reset arrays
    do region = 1, nregions
       do lsec=1,nh3_2dsec
          nh3_emis_2d(region,lsec)%surf = 0.0
       end do
       do lsec=1,nh3_3dsec
          nh3_emis_3d(region,lsec)%d3   = 0.0
       end do
    end do

    ! global arrays for coarsening    
    do region = 1, nregions

       if (isRoot)then
          allocate(work(region)%d3(im(region),jm(region),lm(region)))
       else
          allocate(work(region)%d3(1,1,1))
       end if
    enddo

    do region = 1, nregions
       wrk2D(region)%surf => work(region)%d3(:,:,1)
    end do

    ! --------------------------------
    ! do a loop over available sectors
    ! --------------------------------
    
    ! count 2d and 3d sectors
    seccount2d = 0
    seccount3d = 0

    ! always allocate here 3d data set (for 2d sectors it will be filled in first layer only)
    if (isRoot) then
       allocate( field3d( nlon360, nlat180, ar5_dim_3ddata ) ) ; field3d = 0.0
    else
       allocate( field3d( 1, 1, 1 ) )
    end if

    
    sec : do lsec = 1, numb_sectors

       if (count(used_providers.eq.sectors_def(lsec)%prov).eq.0) cycle 

       if ((trim(sectors_def(lsec)%prov).eq.'ED42') .and. (count(ed42_nh3_sectors.eq.sectors_def(lsec)%name) .eq. 0)) cycle 
       
       if (associated(sectors_def(lsec)%species)) then  ! AR5 checks
          if (count('NH3'.eq.sectors_def(lsec)%species).eq.0) cycle
          if ((trim(sectors_def(lsec)%catname) .eq. 'biomassburning').and.(.not.LAR5BMB)) cycle
       endif

       field3d = 0.0

       if( sectors_def(lsec)%f3d ) then 
          seccount3d = seccount3d + 1
       else 
          seccount2d = seccount2d + 1
       end if

       if (isRoot) then ! READ

          select case( trim(sectors_def(lsec)%prov) )

          case( 'AR5' )

             ! Screen out solvent, waste and shipping sectors for NH3, 
             ! because they are zero in the RCPs
             ! and not present in the historical files.
             if (trim(sectors_def(lsec)%name) .ne. 'emiss_slv' .and. &
                 trim(sectors_def(lsec)%name) .ne. 'emiss_wst' .and. &
                 trim(sectors_def(lsec)%name) .ne. 'emiss_shp') then
               call emission_ar5_ReadSector( 'NH3', emis_input_year, idate(2), lsec, field3d, status )
               IF_NOTOK_RETURN(status=1)
             endif

          case( 'MACC' )

             ! screen out 'nat', 'bio', 'air' sectors
             if ( ( .not. (trim(sectors_def(lsec)%name) .eq. 'emiss_nat'))  .and. &
                  ( .not. (trim(sectors_def(lsec)%name) .eq. 'emiss_bio'))  .and. &
                  ( .not. (trim(sectors_def(lsec)%name) .eq. 'emiss_air')) ) then
                
                call emission_macc_ReadSector( emis_input_dir_mac, 'NH3', emis_input_year, idate(2), &
                                               '0.5x0.5_kg.nc', sectors_def(lsec)%name, 'kg / s', field3d, status )
                IF_NOTOK_RETURN(status=1)
             endif
             
          case( 'ED41' )
             
             select case(trim(sectors_def(lsec)%name))
             case ('1A3b_c_e')
                call emission_ed4_ReadSector( emis_input_dir_ed4, 'NH3', 'nh3', 2005, idate(2), &
                                              lsec, trim(sectors_def(lsec)%prov), 'kg / s', field3d, status )
                IF_NOTOK_RETURN(status=1)
             end select

          case( 'ED42' )

             ! biomass burning (GFED/RETRO/AR5BMB) and transport (ED41) are excluded through ED42_NH3_SECTORS definition
             call emission_ed4_ReadSector( emis_input_dir_ed4, 'NH3', 'nh3', emis_input_year, idate(2), &
                                           lsec, trim(sectors_def(lsec)%prov), 'kg / s', field3d, status )
             IF_NOTOK_RETURN(status=1)

          case('GFEDv3')

             call emission_gfed_ReadSector( emis_input_dir_gfed, 'nh3', emis_input_year, idate(2), &
                                            sectors_def(lsec)%name, 'kg / s', field3d(:,:,1), status )
             IF_NOTOK_RETURN(status=1)

          case('RETRO')

             call emission_retro_ReadSector( emis_input_dir_retro, 'NH3', emis_input_year, idate(2), &
                                             sectors_def(lsec)%name, 'kg / s', field3d(:,:,1), status )
             IF_NOTOK_RETURN(status=1)
	     
          case('MEGAN')
             !
	     !  No biogenic NH3 emissions available in MEGAN
	     !
          case('DUMMY')

          case default
             write(gol,*) "Error in buidling list of providers USED_PROVIDERS"; call goErr
             status=1; TRACEBACK; return

          end select

          ! nothing found??? 
          if( sum(field3d) < 100.*TINY(1.0) ) then
             if (okdebug) then 
                write(gol,'("EMISS-INFO - no NH3 emissions found for ",a," ",a," for month ",i2 )') &
                     trim(sectors_def(lsec)%prov), trim(sectors_def(lsec)%name), idate(2) ; call goPr
             endif
             hasData=0
          else
             if (okdebug) then
                write(gol,'("EMISS-INFO - found NH3 emissions for ",a," ",a," for month ",i2 )') &
                     trim(sectors_def(lsec)%prov), trim(sectors_def(lsec)%name), idate(2) ; call goPr
             endif
             ! scale from kg/s to kg/month
             field3d = field3d * sec_month ! kg / month
             hasData=1
          end if

       end if
       
       call Par_broadcast(hasData, status)
       IF_NOTOK_RETURN(status=1)

       if (hasData == 0) then
          cycle sec
       else
          if ( sectors_def(lsec)%f3d ) then
             has_data_3d(seccount3d)=.true.
          else
             has_data_2d(seccount2d)=.true.
          end if
       end if

       ! Distinguish 2d/3d sectors
       if( sectors_def(lsec)%f3d ) then 

          write(gol,'("EMISS-ERROR - Unexpected 3D data: Uncomment code below ")'); call goErr
          status=1; TRACEBACK; return

          ! ---------------------------
          ! 3d data (AIRCRAFT)
          ! ---------------------------

!           if (isRoot) then ! REGRID

!              ! helper array for regridding
!              allocate( field3d2( nlon360,nlat180,lm(1) ) ) ; field3d2 = 0.0

!              ! aircraft data: regrid vertically to model layers
!              call emission_ar5_regrid_aircraft( iglbsfc, field3d, nlon360, nlat180, ar5_dim_3ddata, lm(1), field3d2, status )
!              IF_NOTOK_RETURN(status=1;deallocate(field3d,field3d2))

!              ! write some numbers
!              call msg_emis( amonth, trim(sectors_def(lsec)%prov),sectors_def(lsec)%name, 'NH3', xmnh3, sum(field3d2) )
!              IF_NOTOK_RETURN(status=1;deallocate(field3d,field3d2))

!              ! distribute to nh3_emis in regions
!              call Coarsen_Emission( 'NH3 '//trim(sectors_def(lsec)%name), nlon360,  nlat180, lm(1),            & 
!                                                                           field3d2, work,    add_field, status )
!              IF_NOTOK_RETURN(status=1;deallocate(field3d,field3d2))

!              deallocate( field3d2 )

!           end if

!           do region = 1, nregions
!              call scatter(dgrid(region), nh3_emis_3d(region,seccount3d)%d3, work(region)%d3, 0, status)
!              IF_NOTOK_RETURN(status=1)
!           end do


       else ! ar5_sector is 2d

          ! ---------------------------
          ! 2d data (Anthropogenic, Ships, Biomassburning)
          ! ---------------------------

          if (isRoot) then ! print total & regrid

             call msg_emis( amonth, trim(sectors_def(lsec)%prov), sectors_def(lsec)%name, 'NH3', xmnh3, sum(field3d(:,:,1)) )
             IF_NOTOK_RETURN(status=1)
             
             call coarsen_emission( 'NH3 '//sectors_def(lsec)%name, nlon360, nlat180, field3d(:,:,1), wrk2D, add_field, status)
             IF_NOTOK_RETURN(status=1)

          end if

          do region = 1, nregions
             call scatter(dgrid(region), nh3_emis_2d(region,seccount2d)%surf, work(region)%d3(:,:,1), 0, status)
             IF_NOTOK_RETURN(status=1)
          end do


       end if

    end do sec ! sectors


    deallocate( field3d )
    do region = 1, nregions
       if (associated(wrk2D(region)%surf)) nullify(wrk2D(region)%surf)
       deallocate( work(region)%d3 )
    end do

    ! check sectors found
    if( seccount2d /= nh3_2dsec ) then 
       write(gol,'(80("-"))') ; call goPr
       write(gol,'("ERROR: 2d sectors do not equal total number:",i4," /= ",i4," !")') seccount2d, nh3_2dsec ; call goErr
       write(gol,'(80("-"))') ; call goPr
       status=1; return
    end if
    if( seccount3d /= nh3_3dsec ) then 
       write(gol,'(80("-"))') ; call goPr
       write(gol,'("ERROR: 3d sectors do not equal total number:",i4," /= ",i4," !")') seccount3d, nh3_3dsec ; call goErr
       write(gol,'(80("-"))') ; call goPr
       status=1; return
    end if
    
    status = 0

  END SUBROUTINE EMISSION_NH3_DECLARE
  !EOC

  !--------------------------------------------------------------------------
  !                    TM5                                                  !
  !--------------------------------------------------------------------------
  !BOP
  !
  ! !IROUTINE:    EMISSION_NH3_APPLY
  !
  ! !DESCRIPTION: Take monthly emissions, and
  !               - split them vertically
  !               - apply time splitting factors 
  !               - add them up (add_3d) 
  !\\
  !\\
  ! !INTERFACE:
  !
  SUBROUTINE EMISSION_NH3_APPLY( region, status )
    !
    ! !USES:
    !
    use dims,          only : itaur, nsrce, tref
    use dims,          only : im, jm, lm
    use datetime,      only : tau2date
    use emission_data, only : emission_vdist_by_sector,   LAR5BMB
    use emission_data, only : do_add_3d, do_add_3d_cycle, bb_cycle
    use emission_data, only : emis_bb_trop_cycle
    use chem_param,    only : inh3, xmnh3, xmn
    use emission_read, only : sectors_def, numb_sectors
    use emission_read, only : ed42_nh3_sectors
    !
    ! !INPUT PARAMETERS:
    !
    integer, intent(in)         :: region
    !
    ! !OUTPUT PARAMETERS:
    !
    integer, intent(out)        :: status
    !
    ! !REVISION HISTORY: 
    !    1 Oct 2010 - Achim Strunk - adapted for new vertical distribution
    !   25 Jun 2012 - P. Le Sager  - adapted for lon-lat MPI domain decomposition
    !
    !EOP
    !------------------------------------------------------------------------
    !BOC

    character(len=*), parameter :: rname = mname//'/emission_nh3_apply'
    integer, dimension(6)       :: idater
    real                        :: dtime, fraction
    integer                     :: imr, jmr, lmr, lsec, i1, i2, j1, j2
    integer                     :: seccount2d, seccount3d
    type(d3_data)               :: emis3d

    ! --- begin -----------------------------------------

    status = 0
    if(.not. has_emis) return

    if( okdebug ) then
       write(gol,*) 'start of emission_nh3_apply'; call goPr
    end if
    
    call tau2date(itaur(region),idater)
    dtime=float(nsrce)/(2*tref(region))    !emissions are added in two steps...XYZECCEZYX.

    if(okdebug) then
       write(gol,*) 'emission_nh3_apply in region ',region,' at date: ',idater, ' with time step:', dtime ; call goPr
    endif


    ! get a working structure for 3d emissions
    call get_distgrid( dgrid(region), I_STRT=i1, I_STOP=i2, J_STRT=j1, J_STOP=j2 )
    allocate( emis3d%d3(i1:i2,j1:j2,lm(region)) ) ; emis3d%d3 = 0.0

    ! count 2d and 3d sectors
    seccount2d = 0
    seccount3d = 0

    ! cycle over sectors
    do lsec = 1, numb_sectors

       if (count(used_providers.eq.sectors_def(lsec)%prov).eq.0) cycle
 
       if ((trim(sectors_def(lsec)%prov).eq.'ED42') .and. (count(ed42_nh3_sectors.eq.sectors_def(lsec)%name) .eq. 0)) cycle 
       
       if (associated(sectors_def(lsec)%species)) then  ! AR5 check
          if (count('NH3'.eq.sectors_def(lsec)%species).eq.0) cycle
          if ((trim(sectors_def(lsec)%catname) .eq. 'biomassburning').and.(.not.LAR5BMB)) cycle
       endif

       ! default: no additional splitting
       fraction = 1.0

       ! ----------------------------------------------------------------------------------------
       ! distinguish here between sectors and whether they should have additional splitting 
       ! if( sectors_def(lsec)%catname == 'biomassburning' ) fraction = fraction * bb_frac etc...
       ! ----------------------------------------------------------------------------------------

       ! distinguish between 2d/3d sectors
       if( sectors_def(lsec)%f3d ) then 

          seccount3d = seccount3d + 1
          if (.not.has_data_3d(seccount3d)) cycle
          emis3d%d3 = nh3_emis_3d(region,seccount3d)%d3

       else

          seccount2d = seccount2d + 1
          if (.not.has_data_2d(seccount2d)) cycle
          emis3d%d3 = 0.0 
          ! vertically distribute according to sector
          call emission_vdist_by_sector( sectors_def(lsec)%vdisttype, 'NH3', region, nh3_emis_2d(region,seccount2d), emis3d, status)
          IF_NOTOK_RETURN(status=1;deallocate(emis3d%d3))
       end if

       ! add dataset according to sector and category
       if( emis_bb_trop_cycle .and. trim(sectors_def(lsec)%catname) == "biomassburning" ) then 
          call do_add_3d_cycle( region, inh3, i1, j1, emis3d%d3, bb_cycle(region)%scalef, xmnh3, xmnh3, status, fraction )
          IF_NOTOK_RETURN(status=1)
       else
          call do_add_3d( region, inh3, i1, j1, emis3d%d3, xmnh3, xmnh3, status, fraction )
          IF_NOTOK_RETURN(status=1)
       end if

    end do

    deallocate( emis3d%d3 )

    if(okdebug) then
       write(gol,*) 'end of emission_nh3_apply'; call goPr
    endif

    ! OK 
    status = 0

  end subroutine emission_nh3_apply
  !EOC

END MODULE EMISSION_NH3