Earthdata Forum

Dear Support,

Please advise which OCSSW can process this MODIS-Aqua Mini-reprocessing R2022.0.1?
https://oceancolor.gsfc.nasa.gov/data/reprocessing/r2022.0.1/aqua/

Thanks
Yuyuan

It is running with V2024.0

Tommy

Thanks Tommy. But I found nothing changed except for nFLH and l2_flags, I'm not sure that's R2022.0.1
I updated luts every day.
Also, I don't think the change to nFLH is right. That's all about nFLH's negative values, they are unreasonably large negatives.
Example: East Caribbean
V2023.2


V2024.0


Please advice.
Yuyuan

OB ODPS - towens wrote: ↑Tue Jul 16, 2024 1:30 pm America/New_York It is running with V2024.0

Tommy

the differences are in the LUTs:

SeaDAS/ocssw/var/modisa/cal/OPER/
MYD02_Emissive_LUTs.V6.2.1.97_OC_v3.1.hdf
MYD02_QA_LUTs.V6.2.1.97_OC_v3.1.hdf
MYD02_Reflective_LUTs.V6.2.1.97_OC_v3.1.hdf

SeaDAS/ocssw/var/modisa/xcal/OPER/
xcal_modisa_axc_oc_v3.1d_412.hdf
xcal_modisa_axc_oc_v3.1d_443.hdf
xcal_modisa_axc_oc_v3.1d_469.hdf
xcal_modisa_axc_oc_v3.1d_488.hdf
xcal_modisa_axc_oc_v3.1d_531.hdf
xcal_modisa_axc_oc_v3.1d_547.hdf
xcal_modisa_axc_oc_v3.1d_555.hdf
xcal_modisa_axc_oc_v3.1d_645.hdf
xcal_modisa_axc_oc_v3.1d_667.hdf
xcal_modisa_axc_oc_v3.1d_678.hdf
xcal_modisa_axc_oc_v3.1d_748.hdf
xcal_modisa_axc_oc_v3.1d_859.hdf
xcal_modisa_axc_oc_v3.1d_869.hdf
xcal_modisa_axc_oc_v3.1d_1240.hdf
xcal_modisa_axc_oc_v3.1d_1640.hdf
xcal_modisa_axc_oc_v3.1d_2130.hdf

My V2023.2 also got these LUTs. May I assume the V2023.2 tag can do the R2022.0.1 reprocessing, too? (Maybe that's the reason I didn't see apparent changes in l2 outputs between two tags)

Yuyuan

Yes - both software versions can use the same LUTs.
There are slight differences in the L2 file format between the two tags, but the scientific results should be the same.

Tommy

And I passed your concerns about the magnitude of negative nFLH to the developers.

Tommy