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Description

The OMI science team produces this Level-3 Aura/OMI Global TOMS-Like Total Column Ozone gridded product OMTO3e (0.25deg Lat/Lon grids). The OMTO3e product selects the best pixel (shortest path length) data from the good quality filtered level-2 total column ozone data (OMTO3) that fall in the 0.25 x 0.25 degree global grids. Each file contains total column ozone, radiative cloud fraction and solar and viewing zenith angles.

The OMTO3e 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 OMTO3e data product is about 2.8 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
C1266136071-GES_DISC
Data State
ACTIVE
Number of Files/Granules
7702
Processing Level
3
Published
Updated
Science Keywords
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 and Radiative Cloud Fraction Daily L3 Global 0.25x0.25 deg [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/AURA/OMI/DATA3002 Date Accessed: 2025-12-14

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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/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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