2020/01/13

L2 algorithm flag equals to 0 for aerosol parameters
set aerosol parameters to fill values and report other parameters (UV Aerosol Index for example)

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please visit the following page for OMAERUV L2 readme file

https://aura.gesdisc.eosdis.nasa.gov/data/Aura_OMI_Level2/OMAERUV.003/doc/README.OMAERUV.pdf
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2018/08/15

 Reprocessed ovp files starting o74701 (07/31/22Z) to o74887

2017/08/07

 overpass files for v1.8.9.1
 
2017/07/14

 overpass files for v1.8.7
 added 300+ AERONET stations to the list (a total of 586)
 /hdf for hdf   format 
 /txt for ASCII format (same criteria and variables as hdf format without 3 variables with height)

 same criteria as the older version
 added cloud fraction, reflectivity for 500nm = fill value
 
2017/05/17

 A new version (1.8.7) of OMAERUV L2 is under processing

2017/03/29

 OMI transitioned into survival mode!
 NO data between o67327 (03/12) and o67402 (03/17)

2017/02/03

 Reprocessed overpass files for orbits 66300-66432

2017/01/12

 Reprocessed OMI overpass files for orbits 66255-6, 66299, 66300, 66315-6, and 66414-9

2015/03/16

 Reprocessed overpass files for orbits 56323 - 56328
 (due to Norway data recovery issue)

2014/12/11

 Reprocessed overpass files for orbits 55140 - 55141

2014/11/28

 Reprocessed overpass files for orbits 53601 - 54609
 (2014/08/13 00Z - 2014/10/21 05Z) for row anomaly correction
2013/08/12

 Reprocessed overpass files for orbit 48182

2013/08/05

 Reprocessed overpass files for
 orbit 46899-46904 and 46915-46918
 due to a solar eclipse problem that occurred during this time

2013/02/25

 Reprocessed overpass files between
 orbit 42795 (07/31/12) and orbit 45374 (01/25/13)
 due to a new set of row anomaly flags from KNMI

2012/08/29

 Reprocessed overpass files between
 orbit 41324 (04/21/12) and orbit 42898 (08/08/12)
 due to L1B flag table update

2012/04/26

 Station overpass files or version v1.4.2

 Criteria:
         All pixels that are not affected by OMI row anomalies (XTrackQualityFlags=0)
         Algorithm Flags = 0 and 1 for AAOD
         Algorithm Flags = 0 AOD and ASSA
         All pixels within 40km of radius