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NOAA-EMC / HDASApp

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FGAT Function Test with 3DEnVar #7

Open XuLu-NOAA opened 2 weeks ago

XuLu-NOAA commented 2 weeks ago

This is to record the test of FGAT function with 3DEnVar in JEDI using HAFS. (1) A 10-member GDAS ensemble is first generated through atm_init_ens onto HAFS grid. (2) A single dropsonde T observation is generated. (3) Modify the following parts of the yaml file from 3DEnVar single ob test for 3DFGAT:

  1. cost type: 3D-Var -> cost type: 3D-FGAT
  2. background: datetime: 2020-08-25T12:00:00Z -> background: datetime: 2020-08-25T09:00:00Z
  3. Add pseudo model configuration: model: name: PSEUDO tstep: PT3H filetype: fms restart filename is datetime templated: true datapath: Data/bkg filename_core: '%yyyy%mm%dd.%hh%MM%ss.fv_core.res.tile1.nc' filename_trcr: '%yyyy%mm%dd.%hh%MM%ss.fv_tracer.res.tile1.nc' filename_sfcd: '%yyyy%mm%dd.%hh%MM%ss.sfc_data.nc' filename_sfcw: '%yyyy%mm%dd.%hh%MM%ss.fv_srf_wnd.res.tile1.nc' filename_cplr: '%yyyy%mm%dd.%hh%MM%ss.coupler.res'
  4. Add time interpolation in observations/observers: get values: time interpolation: linear

The OMB differences suggest the FGAT is working, but the OMA looks suspicious: image

XuLu-NOAA commented 4 days ago

Update the ensemble and background using the corrected halo file according to Issue https://github.com/NOAA-EMC/HDASApp/issues/11. The OMA/OMB table is updated with JEDI 4DEnVar and GSI FGAT as a reference. image Still having concerns regarding the OMA in this FGAT setup. A help issue is submitted to https://github.com/JCSDA-internal/fv3-jedi/issues/1233