fmasson/EnKF: Tools from NERSC to run the Ensemble Kalman Filter, adapted to NEMO. @ 15f22ed15a94a8f4c076f375dd14d514edb745c3

Alison Delhasse e39a8f5c03 adapted to nemo4.2.1 and OSISAF SIC obs		1 rok temu
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TMP_6035	e39a8f5c03 adapted to nemo4.2.1 and OSISAF SIC obs	1 rok temu
TMP_9908	e39a8f5c03 adapted to nemo4.2.1 and OSISAF SIC obs	1 rok temu