OMI DATA PRODUCTS and DATA ACCESS
June 7, 2013:
Please be advised that OMI daily data for May 9 and 10, 2013 might have been affected by the Solar Eclipse. These data will be reprocessed soon.
April 15, 2013: Global gridded Level-3 product 'OMAERUVd' has been reprocessed for dates July 30, 2012 to April 6, 2013. Users who downloaded OMAERUVd data through Mirador before April 15, 2013 using netCDF or OPeNDAP should be aware that the latitude values were inverted. Please make sure you flip the latitude values to get the correct orientation, or replace the data.with new reprocessed files with corrected metadata.
April 3, 2013: To all OMI data users: Please make note, almost all OMI Level-2 and Level 3 products have been reprocessed in last six months.
README Files: Users are advised to read data quality and data validation documents available for each OMI data product from the GES DISC sites. Brief details of the OMI instrument and pixel sizes are available in the OMI Data User's Guide.
For the dates, for which there are no data available either because of different measurement configurations or sensor problems, please see the Data Outage Table.
OMI Level 2, Level 2G, Level-3 and Climatology Products
Short Name & Data Access
|Level 2||Level 2G||Level 3|
|OMAERUV||OMAERUVG||OMAERUVd||OMI Aerosol Optical Depth and Single Scattering Albedo (Near-UV Algorithm) |
|OMAERO||OMAEROG||OMAEROe||OMI Aerosol Optical Depth and Single Scattering Albedo (Multi-Wavelengths Algorithm )|
|OMAEROZ|| || || OMI Aerosol Optical Depth and Single Scattering Albedo, (Multi-Wavelengths Algorithm), Zoomed|
|OMCLDO2G|| ||OMI Cloud Pressure and Fraction (O2-O2 Absorption Algorithm)|
|OMCLDO2Z|| || ||OMI Cloud Pressure and Fraction (O2-O2 Absorption Algorithm), Zoomed|
|OMCLDRRG|| ||OMI Cloud Pressure and Fraction (Raman Scattering Algorithm)|
|OMMYDCLD|| || ||OMI/Aura and MODIS/Aqua Merged Cloud Product|
|OMNO2G||OMNO2d||OMI Nitrogen Dioxide, Total and Tropospheric Columns|
|OMSO2||OMSO2G|| OMSO2e |
|OMI Total Column Sulphur Dioxide (SO2)|
|OMI Total Column Ozone & Aerosol Index, (TOMS-Like Algorithm)|
|OMDOAO3G||OMDOAO3e||OMI Total Column Ozone (DOAS Technique)|
|OMDOAO3Z|| || ||OMI Total Column Ozone (DOAS Technique), Zoomed|
| || ||OMI Ozone Profile|
BrO, HCHO, OClO
|OMI Formaldehyde (HCHO) Total Column|
|OMBRO|| || |
|OMI Bromine Monoxide (BrO) Total Column|
|OMOCLO|| || |
|OMI Chlorine Dioxide (OClO) Slant Column|
Surface UVB Irradiances
OMI Surface UVB Irradiance & Erythemal Dose
Surface Reflectance Climatology
| || || OMLER||OMI Surface Reflectance Climatology (Global 0.5x0.5 deg Grid)|
Pixel Corner Information
|OMPIXCOR|| || ||OMI Ground Pixel Corner Coordinates and Pixel Sizes|
|OMPIXCORZ|| || ||OMI Zoom-in mode Ground Pixel Corner Coordinates and Pixel Sizes|
OMI Level 1B Products
Orbital Swath Pixels (UV1, 13x48 km; UV2 & VIS, 13x24 km; Zoom, 13x12 km )
Short Name & Data Access
OMI Geolocated Earth Radiances for 716 UV Channels (264-383 nm)
(159 UV1 channels in 264 - 311 nm, 13x48 km spatial resolution ;
557 UV2 channels in 307-383 nm, 13x24 km spatial resolution)
OMI Zoom-in Geolocated Earth Radiances for 716 UV Channels (264 - 383 nm),
13x12 km spatial resolution
OMI Geolocated Earth Radiances for 751 Visible Channels (349 - 504 nm)
13x24 km spatial resolution
OMI Zoom-in Geolocated Earth Radiances for 751 Vis Channels (349 - 504 nm),
13x12 km spatial resolution
OMI Solar Irradiances for 716 UV and 751 Visible Channels (264 - 504 nm). This product also provides Zoom-in Solar Irradiances (once a month).
Several row anomalies have occurred in the recent past. These anomalies affect the quality of the Level 1B and Level 2 data products. Please read this information carefully prior to using OMI data. Please respect the dates mentioned as the anomalies have occurred recently.
Row Anomaly Behavior
Since “anomaly 3” the row anomaly exhibits a more dynamic behavior than before. Which rows are affected and to what extent varies with time. Please visit the “Overview” section of our detailed technical information page for the most up to date information and details.
Row Anomaly Corrections
The anomalies are known to the OMI team and are currently under investigation to examine whether corrections for the effects can be implemented in the Level 1b data. Please visit this information page regularly for updates on the status of corrections implemented and visit our detailed technical information page.
Row Anomaly Flagging
The Level 1B data are partially flagged for the anomalies listed above. We expect to provide appropriate flagging for the anomalies in the near future. Please visit our detailed technical information page for details on the current flagging status of the Level 1B and Level 2 products.
Recommendations To Users
At the moment no corrections have been implemented in the operational Level 1B and Level 2 data. It is recommended not to use the affected cross-track scenes. Please respect the dates mentioned above. All other OMI data, meaning other cross track scenes and earlier observations, is of optimal quality. Level-3 products are being produced after filtering for the cross track scenes mentioned per anomaly.