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Aura OMI Level-3 Global Gridded Total and Tropospheric NO2 Data Product (0.25x0.25 deg): OMNO2d


OMI Level-3 Global Gridded NO2 data product, OMNO2d,  is now available from GES DISC (Release Date: Jan 10, 2013).  OMNO2d data product provides the average of all good quality data in 0.25x0.25 degree global grids
In the past, only one OMI Level-3 NO2 data product, OMNO2e,  was released which contained the "average" value of all Level-2 "Good" pixels in each 0.25x0.25 deg global Level-3 grid. Recently (Jan, 2013) OMNO2e product has been replaced by new Level-3 product "OMNO2d" which is based on revised NO2 algorithm.The old OMNO2e data is no longer distributed from GES DISC.  In the future, in addition to OMNO2d data, new OMNO2e product will be produced which will have only one "best"  observation selected from the good quality pixels that occupy the 0.25x0.25 deg grid.  

Data Access 

Mirador - fast search & download

Tropospheric Column Density of Nitrogen Dioxide, 2011

OMI Tropospheric NO2, 2011


     (P.I: Nickolay Krotkov, USA ; Pepijn Veefkind, KNMI)


Data Version and Data Holdings

VersionBegin DateEnd Date
003Oct 1, 2004Current


Production Frequency: one file/day
Granule (File) Coverage: global
File Siz (max):: ~ 6 MB


  Platform: EOS-Aura    

  Instrument: OMI

Level-3 OMI NO2 Cloud-Screened Total and Tropospheric Column NO2 (V003)

Data Set Short Name
: OMNO2d

Data Set Long Name:OMI/Aura NO2 Cloud-Screened Total and Tropospheric Column Daily L3 Global 0.25deg Lat/Lon Grid (V003)

OMI Data Documents
- Readme Document for OMNO2d
-  File Format Spec.

- Data Read Software & Tools
- Giovanni: Data Exploration Interface
-OMI Data User's Guide

-Algorithm Theoretical Basis Document

Other Related Documents:
-OMNO2 data document for Global Change Master Directory
- HDF-EOS Aura File Format Guidelines

Other Links :
-EOS-Aura OMI Page
-OMI Home Page (KNMI-Netherland)
-Aura Validation Data Center (AVDC)





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Last updated: Feb 01, 2016 09:36 AM ET