alternative R2022 IOP products

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tobyw
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alternative R2022 IOP products

by tobyw » Tue Aug 16, 2022 2:49 pm America/New_York

Hi all -

I just started looking around at the new MODIS-Aqua R2022 products. I understand that GIOP is the default model for estimating component IOPs. Will other comparable model outputs (e.g., GSM, QAA) be made available at Level 3 ? This was the case with R2018, but I don't see newly regenerated products anywhere.

Thanks!
Toby

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OB ODPS - towens
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Re: alternative R2022 IOP products

by OB ODPS - towens » Wed Aug 17, 2022 2:08 pm America/New_York

The GSM, QAA and ZLEE products are currently under evaluation and have not yet been produced with the R2022.0 configuration. I don't know when or if they will be made available.

Tommy

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Re: alternative R2022 IOP products

by tobyw » Thu Aug 18, 2022 5:35 pm America/New_York

Understood. Thank you!

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Re: alternative R2022 IOP products

by OB ODPS - towens » Mon Jan 08, 2024 4:19 pm America/New_York

The R2022 GSM data have been reprocessed for MODIS and SeaWiFS and MERIS.
Following our new naming convention, the files have names like:

AQUA_MODIS.20230930.L4b.DAY.GSM.nc
AQUA_MODIS.20230930.L4m.DAY.GSM.adg_443_gsm.4km.nc
AQUA_MODIS.20230930.L4m.DAY.GSM.bbp_443_gsm.4km.nc
AQUA_MODIS.20230930.L4m.DAY.GSM.chl_gsm.4km.nc

They are available under the 'Special' tab on https://oceandata.sci.gsfc.nasa.gov/directdataaccess/

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Re: alternative R2022 IOP products

by sidsaini445 » Tue Jan 09, 2024 5:45 am America/New_York

it appears alternative IOP models beyond the default GIOP may not be made available in MODIS Aqua R2022. Those do not confirm the availability of GSM, QAA, or other IOP outputs at Level 3 like previous R2018 products.

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Re: alternative R2022 IOP products

by OB ODPS - towens » Wed Jan 31, 2024 1:25 pm America/New_York

The R2022 GSM data have been reprocessed for MODIS and SeaWiFS and MERIS.
Following our new naming convention, the files have names like:

AQUA_MODIS.20230930.L4b.DAY.GSM.nc
AQUA_MODIS.20230930.L4m.DAY.GSM.adg_443_gsm.4km.nc
AQUA_MODIS.20230930.L4m.DAY.GSM.bbp_443_gsm.4km.nc
AQUA_MODIS.20230930.L4m.DAY.GSM.chl_gsm.4km.nc

They are available under the 'Special' tab on https://oceandata.sci.gsfc.nasa.gov/directdataaccess/

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Re: alternative R2022 IOP products

by tobyw » Wed Feb 14, 2024 6:51 pm America/New_York

Thank you! I had long-since moved on :0

These are indicated as 'L4' files. Does that mean they were computed from L3 Rrs instead of using L2gen then binning them up?

Best,
Toby

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Re: alternative R2022 IOP products

by OB ODPS - towens » Thu Feb 15, 2024 10:55 am America/New_York

Yes, They are derived from L3 Rrs.
Tommy

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