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Maybe you should stick to this link if you need to find data for a specific area. https://oceancolor.gsfc.nasa.gov/cgi/browse.pl?sen=amod Here is the link to OBPG File Naming Convention: https://oceancolor.gsfc.nasa.gov/docs/filenaming-convention/ For AQUA_MODIS.20201231T195000.L2.SST.nc as an examp...

When you install_ocssw, did you use the option --modisa to install MODIS Aqua files? For more information on options, you can run install_ocssw -h. Also, I assume you installed SeaDAS-7.5.3, for SeaDAS OCSSW processing on Windows is not yet supported in SeaDAS 8.0.0, but is coming soon. Here is more...

See if this link would work better?
https://oceandata.sci.gsfc.nasa.gov/MODIS-Aqua

Thanks for sharing more detailed information. I did repeat your error reading A20192742019304.L3m_MO_CHL_chlor_a_4km.nc and AQUA_MODIS.20190101_20190131.L3m.MO.SST.sst.4km.nc. 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 rel...

The L3b file format is not a raster image format. The internal data model for SeaDAS is based on 2D raster images, so visualizing the L3b files is not directly possible. The data need to be mapped prior to display. You can use OCSSW -> l3mapgen to map L3b file to L3M file and read it. Here is the li...

Please tell us what version of SeaDAS are you using? SeaDAS-7.5.3 or SeaDAS 8.0.0?
Are you trying to read L2 data?
I am able to read A2019256071000.L2_LAC_OC.nc (MODIS AQUA 2019-09-13) and AQUA_MODIS.20190913T071001.L2.SST.nc with both versions of SeaDAS.

Can you share with us what L1B file you are using?

"Atmospheric correction is done by `l2gen` from the OCSSW processing system" as George said in another post. Here is the help page for l2gen https://seadas.gsfc.nasa.gov/help/8.0.0/processors/ProcessL2gen.html https://seadas.gsfc.nasa.gov/help/8.0.0/processors/ProcessL2gen.html#COMMAND_LIN...

From another post, I understand you are running SeaDAS 8.0.0, and trying to run l3mapgen.

If you click SeaDAS-OCSSW -> SeaDAS/System Info, it'll tell us more.

Thanks,

Bing

It seems to me that you have a network error. Maybe you can try modis_geo.py again when your network is more stable. Also, if you are not familiar with seadas-7.5.3, you can try our latest version SeaDAS 8.0.0 (Beta). It has same access to OCSSW and has more tools to help users to configure their en...