Modis product Problem in the SeaDAS

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tainagaspar
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Joined: Tue May 11, 2021 4:55 pm America/New_York

Modis product Problem in the SeaDAS

by tainagaspar » Wed May 12, 2021 2:07 pm America/New_York

Dears,
I'm downloading the time series of the monthly files (4km) of the modis AQCUA (KD_490 and PAR) through OceanColor Data and opening them in SeaDAS.
However, some files are not opening in SeaDAS. They do not open or return a problem.

Looking at the files on the oceanocolordata website that gave this error in SeaDAS, I realized that they have been last modified on different dates than the others.

I list below the files with this problem and I sincerely ask for some help or advice to deal with this problem.

Thanks
KD_490:
A20040922004121.L3m_MO_KD490_Kd_490_4km
A20070912007120.L3m_MO_KD490_Kd_490_4km
A20112742011304.L3m_MO_KD490_Kd_490_4km
A20192132019243.L3m_MO_KD490_Kd_490_4km
A20192442019273.L3m_MO_KD490_Kd_490_4km
A20192742019304.L3m_MO_KD490_Kd_490_4km
A20193052019334.L3m_MO_KD490_Kd_490_4km
A20193352019365.L3m_MO_KD490_Kd_490_4km
And all files from the year 2020.

PAR:
A20031822003212.L3m_MO_PAR_par_4km
A20043062004335.L3m_MO_PAR_par_4km
A20122142012244.L3m_MO_PAR_par_4km
A20140912014120.L3m_MO_PAR_par_4km
A20170602017090.L3m_MO_PAR_par_4km
A20171822017212.L3m_MO_PAR_par_4km
A20172442017273.L3m_MO_PAR_par_4km
A20192132019243.L3m_MO_PAR_par_4km
A20192442019273.L3m_MO_PAR_par_4km
A20192742019304.L3m_MO_PAR_par_4km
A20193052019334.L3m_MO_PAR_par_4km
A20193352019365.L3m_MO_PAR_par_4km
And all files from the year 2020.

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OB SeaDAS - xuanyang02
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Posts: 131
Joined: Tue Feb 09, 2021 5:42 pm America/New_York

Re: Modis product Problem in the SeaDAS

by OB SeaDAS - xuanyang02 » Wed May 12, 2021 4:19 pm America/New_York

I downloaded all the KD_490 files you listed and was only able to open and display two of them
A20040922004121.L3m_MO_KD490_Kd_490_4km
A20112742011304.L3m_MO_KD490_Kd_490_4km.

It's a known issue for SeaDAS 8.0.0 in reading files with null value attributes in metadata. The fix will be in the next release.

In the meantime, you can read these L3m files with seadas-7.5.3. You can download it from here:
https://oceandata.sci.gsfc.nasa.gov/Sea ... ler/7.5.3/

OB SeaDAS - xuanyang02
Subject Matter Expert
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Posts: 131
Joined: Tue Feb 09, 2021 5:42 pm America/New_York

Re: Modis product Problem in the SeaDAS

by OB SeaDAS - xuanyang02 » Thu Jul 01, 2021 5:59 pm America/New_York

SeaDAS 8.1.0 was released, and it can now read L3m files like A20202752020305.L3m_MO_KD490_Kd_490_4km.nc. You are welcome to try it: https://seadas.gsfc.nasa.gov/downloads/

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