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I tired l2gen on AQUA_MODIS.20230220T011000.L1B.hdf with north=22, south=12, east=-175, west=175.. I got the L2 file with the southwest point (176.85, 12.91) and northeast point (-175.47, 23.65). The x dimension is 0 to 682 pixels. I don't understand what you meant by "extremly large x dimensio...

Sometimes you need to click "Get Ancillary" twice to get the ancillary files...

If you want to do l2gen with resolution=250, you need two L1B files MYD02QKM.A2016059.0235.061.2018055181559.hdf (resolution=250m) MYD02HKM.A2016059.0235.061.2018055181559.hdf (resolution=500m) in the same directory with MYD021KM.A2016059.0235.061.2018055181559.hdf. I did l2gen on MYD021KM.A2016059....

Here are links to Video Tutorials, Demos and presentation materials on SeaDAS 7. We are making tutorials on SeaDAS 8. https://seadas.gsfc.nasa.gov/tutorials/video_tutorials/ https://seadas.gsfc.nasa.gov/tutorials/presentations/ Here is a link to our latest webinar https://www.earthdata.nasa.gov/lear...

Could you provide the name of the MODIS L1 file you are working on?

Did you try l2gen with the default setting, which has maskland and maskcloud checked?

OCSSW cannot be built on Windows. Here is the requirement and how to build OCSSW https://seadas.gsfc.nasa.gov/build_ocssw/ If you have SeaDAS 8.3.0 installed on linux or mac, you can install OCSSW with the source code, and follow the instructions here https://github.com/rakeshkstp/AtmosphericCorrect...

Could you please provide a link where you download the terra file?

I downloaded TERRA_MODIS.20190930T160001.L2.OC.nc from https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-2/Terra-MODIS/2019/273/, and SeaDAS can open it with no problems

Your .bashrc has export PATH="/usr/local/bin/python3:$PATH" If you open a new terminal, which python3 should return /usr/local/bin/python3. If you open SeaDAS from the same terminal, SeaDAS-Toolbox->Software & System Info... should return "Python3 Path: /usr/local/bin/python3"...

SeaDAS-Toolbox->Software & System Info... says

"Python3 Path: /usr/local/bin/python3"

You probably opened SeaDAS from a shell that has the path set to /usr/local/bin/python3.

Try

SeaDAS 8.3.0 now offers Windows users an option to access SeaDAS science processors through a docker image. You are welcome to give it a try -- https://seadas.gsfc.nasa.gov/client_server