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Description

The OMI science team produces this Level-3 Aura/OMI Global Aerosol Data Products OMAEROe (0.25deg Lat/Lon grids). The OMAEROe product selects best aerosol value from the Level2G good quality data that are reported in each grid, based on the multi-wavelength algorithm that uses up to 20 wavelength bands between 331 nm and 500 nm. The selection criteria is based on the shortest optical path length (secant of solar zenith angle + secant of viewing zenith angle).

The OMAEROe 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 OMAEROe data product is about 7 Mbytes. (The shortname for this Level-3 Global Gridded Aerosol Product is OMAEROe)

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
C1266136062-GES_DISC
Data State
ACTIVE
Number of Files/Granules
7730
Processing Level
3
Published
Updated
Science Keywords
Aerosol Extinction ,
Aerosol Optical Depth/Thickness

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

Stein-Zweers, D., & Veefkind, P. (2012). OMI/Aura Multi-wavelength Aerosol Optical Depth and Single Scattering Albedo Daily L3 Global 0.25x0.25 deg Lat/Lon Grid [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/AURA/OMI/DATA3004 Date Accessed: 2026-01-08

Documents

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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/ColumnAmountAerosol/Data Fields/AbsorbingAerosolOpticalThicknessMW Spectral Absorbing Aerosol Optical Thickness for best fit aerosol model derived with the Multi-Wavelength method, scaled by a factor 1000 NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/AerosolModelMW Aerosol model indicator for best fit aerosol model derived with the Multi-Wavelength method NoUnits uint16 65535 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/AerosolOpticalThicknessMW Spectral Aerosol Optical Thickness for best fit aerosol model derived with the Multi-Wavelength method, scaled by a factor 1000 NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/AerosolOpticalThicknessPassedThresholdMean Mean spectral Aerosol Optical Thickness of aerosol models that passed the threshold, scaled by a factor 1000. NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/AerosolOpticalThicknessPassedThresholdStd Standard deviation of the Aerosol Optical Thicknesses of aerosol models that passed the threshold, scaled by a factor 1000. NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/Latitude Latitude of the center of the groundpixel deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/Longitude Longitude of the center of the groundpixel deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/SingleScatteringAlbedoMW Spectral Single Scattering Albedo for best fit aerosol model derived with the Multi-Wavelength method, scaled by a factor 1000 NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/SingleScatteringAlbedoPassedThresholdMean Mean spectral Single Scattering Albedo of aerosol models that passed the threshold, scaled by a factor 1000. NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/SingleScatteringAlbedoPassedThresholdStd Standard deviation of the Single Scattering Albedo of aerosol models that passed the threshold, scaled by a factor 1000. NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/SolarZenithAngle Solar zenith angle at WGS84 ellipsoid for center co-ordinate of the ground pixel deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/TerrainReflectivity Reflectivity of the ground pixel, scaled by a factor 1000 NoUnits int16 -32767 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/UVAerosolIndex UV Aerosol Index NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/ViewingZenithAngle Viewing zenith angle at WGS84 ellipsoid for center co-ordinate of the ground pixel deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/ColumnAmountAerosol/Data Fields/VISAerosolIndex VIS Aerosol Index NoUnits 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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