Degraded Ocean Color data

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OB.DAAC - SeanBailey
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Degraded Ocean Color data

by OB.DAAC - SeanBailey » Thu Jul 22, 2021 11:42 am America/New_York

We were recently alerted to an apparent issue with the ozone ancillary data used in ocean color data processing. The issue is anomalously high ozone concentrations in the region between about 30S and 50S corresponding to the AURA-OMI ground track:
N202119900_O3_AURAOMI_24h_ozone.png
N202119900_O3_AURAOMI_24h_ozone.png (56.09 KiB) Not viewed yet
This issue seems to have started on 18 May 2021. We are in contact with the OMI team and they are investigating. Once we have a resolution to this issue, we will reprocess the affected data. Until then caution should be exercised when using these data.

Regards,
Sean
Last edited by OB.DAAC - amscott on Mon Dec 13, 2021 1:11 pm America/New_York, edited 1 time in total.
Reason: Data processing is still delayed due to this issue.

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garnthev
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Re: Degraded Ocean Color data

by garnthev » Tue Oct 19, 2021 5:44 am America/New_York

Hi Sean,
is this issue still on-going?
Thank You in advance. Philippe

OB.DAAC - SeanBailey
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Re: Degraded Ocean Color data

by OB.DAAC - SeanBailey » Tue Oct 19, 2021 2:24 pm America/New_York

It is. There was an indication from the OMI/TOMS team that it was resolved about a month ago, but in our testing we identified a residual effect of the underlying cause. The bulk of the problem was corrected, but we are still waiting on the OMI/TOMS team to provide a fix for this secondary issue. ...hopefully soon...

Sean

garnthev
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Re: Degraded Ocean Color data

by garnthev » Fri Oct 29, 2021 3:55 am America/New_York

Hi Sean,
last refined MODIS are from July-1,
is it linked to the availability of the fix or something else?
Regards, Philippe

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Re: Degraded Ocean Color data

by OB.DAAC - SeanBailey » Wed Jan 19, 2022 9:31 am America/New_York

The issue with the ozone data has (finally!) been resolved. The affected ocean color data are being reprocessed and will be available soon.

Regards,
Sean

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Re: Degraded Ocean Color data

by OB ODPS - towens » Thu Jan 20, 2022 11:53 am America/New_York

We will be reprocessing from May 15, 2021 forward for MODIS and VIIRS refined Ocean Color products.

Tommy

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