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All of the new collection 4 for OMSO2, OMSO2G and OMSO2e are now available.

https://disc.gsfc.nasa.gov/datacollection/OMSO2_004.html
https://disc.gsfc.nasa.gov/datacollection/OMSO2G_004.html
https://disc.gsfc.nasa.gov/datacollection/OMSO2e_004.html

Please note that there is a new version OMNO2 product based on OMI collection 4 data ( https://disc.gsfc.nasa.gov/datacollection/OMNO2_004.html ). Please use ScatteringWeight in the collection 4 OMNO2 level 2 files to adjust vertical column densities with your model profiles. For instruction on how ...