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It seems there was an issue accessing or downloading the required auxiliary attitude and ephemeris data needed by the modis_GEO.py tool to process the MODIS geolocation. A few things to try: Check your network connection and make sure you have access to the internet and the URLs used to fetch the au...

Here is some sample Python code to plot the contours of aerosol subtypes from the CALIPSO Vertical Feature Mask (VFM) product with respect to latitude and altitude: [code]import numpy as np import matplotlib.pyplot as plt from pyhdf.SD import SD, SDC # Open the HDF4 file FILE_NAME = 'CAL_LID_L2_VFM-...

My recommendation would be to start by testing the Mosaic tool option, or exploring the feasibility of an external preprocessing step. Modifying l2bin itself seems more difficult.

it appears alternative IOP models beyond the default GIOP may not be made available in MODIS Aqua R2022. Those do not confirm the availability of GSM, QAA, or other IOP outputs at Level 3 like previous R2018 products.

it seems there are a few key points about resolving l2gen errors in SeaDAS/OCSSW: Many l2gen errors relate to file permissions or disk space issues. Make sure the user running l2gen has proper read/write access to input/output directories. Also check available disk space. For issues specific to VIIR...

It looks like there are a few issues going on here: The "Permission denied" error from l2bin is likely because it does not have write permission to the directory specified in the infile/ofile paths. Make sure the user running l2bin has read/write access. The segmentation fault with l2gen w...