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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.

Product Summary

Platforms
Aura
Instruments
OMI
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2004-10-01 to Present
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Concept ID
C1266136070-GES_DISC
Data State
ACTIVE
Number of Files/Granules
7703
Processing Level
3
Published
Updated
Science Keywords
Aerosol Optical Depth/Thickness ,
Atmospheric Ozone ,
Reflectance

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Bhartia, P. K. (2012). OMI/Aura TOMS-Like Ozone, Aerosol Index, Cloud Radiance Fraction Daily L3 Global 1.0x1.0 deg [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/AURA/OMI/DATA3001 Date Accessed: 2025-12-14

Documents

READ-ME

PI DOCUMENTATION

PUBLICATIONS

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
HDFEOS/GRIDS/OMI Column Amount O3/Data Fields/ColumnAmountO3 Best Total Ozone Solution DU float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/OMI Column Amount O3/Data Fields/RadiativeCloudFraction Radiative Cloud Fraction = fc*Ic331/Im331 NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/OMI Column Amount O3/Data Fields/SolarZenithAngle Solar Zenith Angle deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/OMI Column Amount O3/Data Fields/UVAerosolIndex UV Aerosol Index NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/OMI Column Amount O3/Data Fields/ViewingZenithAngle Viewing Zenith Angle deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS INFORMATION/StructMetadata.0 HDFEOS INFORMATION/StructMetadata.0 N/A OTHER N/A N/A N/A
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