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SeaDAS can read L1A, L1B, L2, L3m MODIS AQUA files obtained from this site or created by SeaDAS processors. SeaDAS can also read most other MODIS AQUA files in .nc or .hdf format.
https://seadas.gsfc.nasa.gov/

mapgen on an L2 file is equivalent to l2bin + l3mapgen. It seems mapgen fails doing l2bin with l2_flags as one of the products. Please try python path/SeaDAS/ocssw/bin/mapgen --ifile=path/A2020003181000.L2_LAC_OC.x.nc --ofile=path/mapgenTest_A2020003181000.L2_LAC_OC.x.nc --product=chlor_a --resoluti...

SeaDAS has a tool l3mapgen that can create a level 3 mapped file from a level 3 binned file, and SeaDAS can read the mapped file.

Here is an introduction to SeaDAS -- https://seadas.gsfc.nasa.gov/
and the help on l3mapgen -- https://seadas.gsfc.nasa.gov/help-8.3.0/processors/ProcessL3mapgen.html

We replaced l2mapgen with mapgen -- https://seadas.gsfc.nasa.gov/help-8.2.0/processors/ProcessMapgen.html

After SeaDAS freezes doing Bathymetry Masks, you should restart SeaDAS. Before you do Bathymetry Masks again, try to optimize VM Parameters and/or cache size by pressing the Compute button in the Performance Optimizer Smart Configurator Window, accessed through SeaDAS -> Preferences -> Performance h...

You should be able to get sola, solz, sena, and senz values for SeaHawk and MODIS Aqua files. Please make sure none of sola_***, solz_***, sena_***, and senz_*** is checked on the product tree.

You should be able to get rhot with SeaDAS 8.3.0 if you include rhot_nnn in the Selected Products textArea.

We can't make any updates for Windows 11 until we have access to Windows 11.

After SeaDAS freezes doing CoastlineLandWaterMasks, you should restart SeaDAS. Before you do CoastlineLandWaterMasks again, try to optimize VM Parameters and/or cache size by pressing the Compute button in the Performance Optimizer Smart Configurator Window, accessed through SeaDAS -> Preferences ->...

You can install SeaDAS processors (OCSSW) with GUI or manually -- https://seadas.gsfc.nasa.gov/downloads/

If you want to run SeaDAS processors on command line, you also need to add a few lines in your .bashrc file. See the instruction at the bottom of the above mentioned page