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TEST IASI METOP-B in HAFS domain #21

Open XuLu-NOAA opened 3 weeks ago

XuLu-NOAA commented 3 weeks ago

This is to document the test of assimilating IASI Metop-B radiance data. Work will include the following steps:

  1. Convert budr data to ioda with bufr2ioda tools
  2. Convert bias file to ioda with bufr2ioda tools
  3. Modify the yaml file from ATMS test accordingly
  4. Check the assimilation results
  5. Add into the test case.
XuLu-NOAA commented 3 weeks ago

Initial test starts from modifying the yaml template from parm/jcb-gdas/observations/atmosphere/iasi_metop-b.yaml.j2. Single ob and multiple obs tests indicate similarities between GSI and JEDI. Major differences may come from CRTM version 2.4.0.1 in GSI versus version 2.4.1 in JEDI. https://docs.google.com/presentation/d/13asklpaQm2xLYRJp7aPwPQOPVbQ9SAbuJ0jk3G4PRMY/edit#slide=id.g2fc6f3057c3_1_20

Note, by default, the bufr data is radiance, so the yaml file will convert radiance to brightness temperature. In the current tests, the data is from GSI diagfile, so it is already brightness temperature. So I commented out the conversion inside JEDI yaml. Needs to be further tested from the bufr file conversion.