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Description

This Level-2G daily global gridded product OMAERUVG is based on the pixel level OMI Level-2 AERUV product OMAERUV. This Level-2G daily global gridded product OMAERUVG is based on the pixel level OMI Level-2 Aerosol product OMAERUV. OMAERUVG data product is a special Level-2 gridded product where pixel level products are binned into 0.25x0.25 degree global grids. It contains the data for all scenes that have observation time between UTC times of 00:00:00 and 23:59:59.9999. All data pixels that fall in a grid box are saved without averaging. Scientists can apply a data filtering scheme of their choice and create new gridded products.

The OMAERUVG files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits mapped on the Global 0.25x0.25 deg Grids. The maximum file size for the OMAERUVG data product is about 50 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
C1266136097-GES_DISC
Data State
ACTIVE
Number of Files/Granules
7729
Processing Level
2G
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

Torres, O. O. (2012). OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo Daily L2 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/DATA2005 Date Accessed: 2026-01-08

Documents

READ-ME

PI DOCUMENTATION

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

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/Aerosol NearUV Swath/Data Fields/AerosolType Aerosol Type NoUnits uint8 255 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/CloudFraction Cloud Fraction NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/CloudOpticalDepth Cloud Optical Depth NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FinalAerosolAbsOpticalDepth Best Aerosol Absorption Optical Depth (tau_abs) NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FinalAerosolLayerHeight Final Aerosol Layer Height (km) km float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FinalAerosolOpticalDepth Best Aerosol Optical Depth (tau) NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FinalAerosolSingleScattAlb Best Aerosol Single Scattering Albedo (omega0) NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FinalAlgorithmFlags Final Algorithm Flags NoUnits uint16 65535 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FoV75Area Mean Area for 75% Field of View Pixels on the WGS-85 Ellipsoid km^2 float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FoV75CornerLatitude Corner Latitudes for 75% Field of View Pixels on the WGS-85 Ellipsoid (CCW relative to flight direction: LL,LR,UR,UL) deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/FoV75CornerLongitude Corner Longitudes for 75% Field of View Pixels on the WGS-85 Ellipsoid (CCW relative to flight direction: LL,LR,UR,UL) deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/GroundPixelQualityFlags Ground Pixel Quality Flags NoUnits uint16 65535 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/Latitude Geodetic Latitude (deg) deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/LineNumber Line Number of Candidate Scene NoUnits int32 -2000000000 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/Longitude Geodetic Longitude (deg) deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/MeasurementQualityFlags Measurement Quality Flags NoUnits uint16 65535 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/NormRadiance Normalized Radiance NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/NumberOfCandidateScenes Number of Candidate Scenes NoUnits int32 0 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/OrbitNumber Orbit Number of Candidate Scene NoUnits int32 -2000000000 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/PathLength Path Length NoUnits float32 1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/Reflectivity Lambert Equivalent Reflectivity NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/RelativeAzimuthAngle Relative (sun + 180 - view) Azimuth Angle (deg) deg(EastofNorth) float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/SceneNumber Scene Number of Candidate Scene NoUnits int32 -2000000000 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/SecondsInDay Seconds of Day at Start of Scan s float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/SolarZenithAngle Solar Zenith Angle (deg) deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/SurfaceAlbedo Surface Albedo NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/TerrainPressure Terrain Pressure (mbar) mbar float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/Time Time at Start of Scan (s, TAI93) s float64 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/UVAerosolIndex UV Aerosol Index NoUnits float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/ViewingZenithAngle Viewing Zenith Angle (deg) deg float32 -1.2676506002282E+30 N/A N/A
HDFEOS/GRIDS/Aerosol NearUV Swath/Data Fields/XTrackQualityFlags XTrack Quality Flags NoUnits uint8 255 N/A N/A
HDFEOS INFORMATION/ArchivedMetadata HDFEOS INFORMATION/ArchivedMetadata N/A OTHER N/A N/A N/A
HDFEOS INFORMATION/CoreMetadata HDFEOS INFORMATION/CoreMetadata N/A OTHER N/A 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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