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Problem in reading Modis 1B data (MYDO21KM) in SeaDas

https://forum.earthdata.nasa.gov/viewtopic.php?t=2676

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Problem in reading Modis 1B data (MYDO21KM) in SeaDas

Posted: Mon Nov 01, 2021 10:01 am America/New_York
by hannapapkova
Dear Ocean Color cupport team,

Please help me with the difficulty encountered while reading the MYDO21KM file.

When I opening a similar file in Python, I see the integer values in EV_1KM_RefSB. As I understood from the literature, this is Earth View 1KM Reflective Solar Bands Scaled Integers. But when I open the same file in SeaDas, values EV_1KM_RefSB are automatically converted to floats.

I am sorry, but I can not understant that this floats values represent (reflectance or radiances), can you help please.

Kind Regards,

Hanna Papkova

Re: Problem in reading Modis 1B data (MYDO21KM) in SeaDas

Posted: Tue Nov 02, 2021 4:08 pm America/New_York
by OB.DAAC - SeanBailey
The SeaDAS MODIS L1B reader reports the data converted using the reflectance scaling....so reflectances.

Sean

Re: Problem in reading Modis 1B data (MYDO21KM) in SeaDas

Posted: Tue Jul 05, 2022 1:55 pm America/New_York
by grossg99
So the L1B reader automatically scales it to TOA reflectance for you? Do you have a source so I can cite that?
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