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What's in your ifilelist.txt?

Do you have a corresponding geo file for /home/williamcoast/Desktop/Projects/NearshrTemp/Data/Raw/AQUA_MODIS.20020912T215603.L1B.hdf in the same directory?

Please also make sure that you have enough disk space to save all the geo/L1B/L2 files.

With SeaDAS-8.2.0, you can install msis2a(b) processors and do l2gen on msis2a(b) L1C files on command line. https://seadas.gsfc.nasa.gov/help-8.2.0/processors/InstallOCSSW.html#cl https://seadas.gsfc.nasa.gov/help-8.2.0/processors/ProcessL2gen.html#COMMAND_LINE_HELP The upcoming SeaDAS-8.3.0 will s...

Yes, please update OCSSW to V2022.2.

V2022.1 introduced a bug that obpg_file_type does not recognize OLCI/MERIS/MSI L1B files. V2022.2 fixed it.

multilevel_processor has a little trouble to match an L1A file with the right geo file. The solution is to skip [geo] in parfile text area (mlp knows to create a geo file if it does not find one). So your parfile text area should look like this: [main] ifile=/home/williamcoast/Desktop/Projects/Nears...

"ERORR!! Ifile contains UNKNOWN mission" means SeaDAS can't recognize the mission of one of your files. Please make sure "/home/williamcoast/Desktop/Projects/NearshrTemp/Data/Raw/A2002185205500.L1A_LAC.x.hdf" exists, and multilevel_processor works with this file. Now use a plian ...

Please paste the content of your .lst file here. Make sure it's edited with plain text editor.


Here is a post you might find relevant --
viewtopic.php?p=11440&hilit=multilevel+processor#p11383

l2gen on viirs needs L1A(or L1B) + GEO as input.

What happens when you click "Okay" in that dialog? Are you able to proceed further with l2gen GUI?

Please update your OCSSW to V2022.1 and try l2gen again.

If you don't have OCSSWROOT defined, you can do

Actually, you can try V2022.1