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OMI/Aura TOMS-Like Ozone, Aerosol Index, Cloud Radiance Fraction L3 1 day 1 degree x 1 degree V004 (OMTO3d) at GES DISC

Published by NASA/GSFC/SED/ESD/TISL/GESDISC | National Aeronautics and Space Administration | Catalog Last Checked: February 14, 2026 at 07:33 PM | Dataset Last Updated: February 10, 2026
The OMI science team produces this Level-3 daily global TOMS-Like Total Column Ozone gridded product OMTO3d (1 deg Lat/Lon grids). The OMTO3d product is produced by gridding and averaging only good quality level-2 total column ozone orbital swath data (OMTO3, based on the enhanced TOMS version-8 algorithm) on the 1x1 degree global grids.The OMTO3d files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits. The maximum file size for the OMTO3d data product is about 0.65 Mbytes.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "Earthdata Forum",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:earthdata-support@nasa.gov"
}
description The OMI science team produces this Level-3 daily global TOMS-Like Total Column Ozone gridded product OMTO3d (1 deg Lat/Lon grids). The OMTO3d product is produced by gridding and averaging only good quality level-2 total column ozone orbital swath data (OMTO3, based on the enhanced TOMS version-8 algorithm) on the 1x1 degree global grids.The OMTO3d files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits. The maximum file size for the OMTO3d data product is about 0.65 Mbytes.
distribution 
[
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  {
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    "mediaType": "application/octet-stream",
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  },
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    "@type": "dcat:Distribution",
    "title": "Data Information (HTML)",
    "format": "HTML",
    "mediaType": "text/html",
    "downloadURL": "https://acdisc.gesdisc.eosdis.nasa.gov/opendap/HDF-EOS5/Aura_OMI_Level3/OMTO3d.004/contents.html"
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  },
  {
    "@type": "dcat:Distribution",
    "title": "Data Information (HTML)",
    "format": "HTML",
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    "mediaType": "application/pdf",
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  },
  {
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    "title": "Data Information (PDF)",
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]
identifier 10.5067/Aura/OMI/DATA3401
keyword 
[
  "earth-science-aerosols-atmosphere-aerosol-optical-depth-thickness-uv-aerosol-index",
  "earth-science-atmospheric-chemistry-atmosphere-oxygen-compounds-atmospheric-ozone-column-amount",
  "earth-science-atmospheric-radiation-atmosphere-reflectance"
]
landingPage https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/OMTO3d_004.png
modified 2026-02-10
programCode 
[
  "026:000"
]
publisher 
{
  "name": "NASA/GSFC/SED/ESD/TISL/GESDISC",
  "@type": "org:Organization"
}
spatial 
"["CARTESIAN",[{"WestBoundingCoordinate":-180,"NorthBoundingCoordinate":90,"EastBoundingCoordinate":180,"SouthBoundingCoordinate":-90}]]"
temporal 2004-10-01/2004-10-01
theme 
[
  "Earth Science"
]
title OMI/Aura TOMS-Like Ozone, Aerosol Index, Cloud Radiance Fraction L3 1 day 1 degree x 1 degree V004 (OMTO3d) at GES DISC

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