N: 90 S: -90 E: 180 W: -180
Description
The reprocessed OMI/Aura Level-2 Zoomed Aerosol data product OMAEROZ at 13x12 km resolution have been made available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for public access in March 2012. There are two Level-2 Aura OMI aerosol products OMAERO and OMAERUV. The OMAERUV product uses the near-UV algorithm. The OMAERO (13x24 km resolution) and OMAEROZ (13x12 km resolution) is based on the multi-wavelength algorithm that uses up to 20 wavelength bands between 331 nm and 500 nm. The multi-wavelength retrieval algorithm is developed by the KNMI OMI Team Scientists. Drs. Deborah Stein-Zweers, Martin Sneep and Pepijn Veefkind are now the key investigators of this product. The OMAEROZ products contain Aerosol Optical Depths, Single Scattering Albedo, Aerosol Type, Aerosol Layer Height, and other intermediate and ancillary parameters and geolocation information.
The OMAEROZ files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes). OMAEROZ data files are based on Zoomed Level 1B radiance observations which are made once a month. Thus there is one day of zoomed data (approximately 14 orbits) per month. The maximum file size for the OMAEROZ data is about 11 Mbytes.
A Readme document containing brief algorithm description and known data quality related issues and file specifications are provided by the OMAERO Algorithm lead.
Product Summary
Citation
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Documents
READ-ME
PI DOCUMENTATION
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
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 Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/AerosolIndexUV | UV Aerosol Index | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/AerosolIndexVIS | VIS Aerosol Index | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/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/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/AerosolModelsPassedThreshold | Ids of the aerosol models that passed the threshold test, ordered by increasing Root-Mean-Square error | NoUnits | uint16 | 65535 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/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/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/AerosolOpticalThicknessMWPrecision | Precision of the spectral Aerosol Optical Thickness at the reference wavelength for best fit aerosol model derived with the Multi-Wavelength method, scaled by a factor 1000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/AerosolOpticalThicknessNUV | Spectral Aerosol Optical Thickness derived with the Near UV method, scaled by a factor 1000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/AerosolOpticalThicknessPassedThreshold | Spectral Aerosol Optical Thickness of aerosol models that passed the threshold, ordered by increasing RMS error, scaled by a factor 1000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/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/SWATHS/ColumnAmountAerosol (60x557x4)/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/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/CloudFlags | Cloud Quality Flags | NoUnits | uint8 | 255 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/CloudPressure | Effective Cloud Pressure | hPa | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/EffectiveCloudFraction | Effective cloud fraction, scaled by a factor 100 | NoUnits | int8 | -127 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/InstrumentConfigurationId | Unique ID for instrument settings for current measurement | NoUnits | uint8 | 255 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/MeasurementQualityFlags | Quality Flags on Measurement Level | NoUnits | uint8 | 255 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/NumberOfModelsPassedThreshold | Number of aerosol models that passed the threshold test | NoUnits | uint8 | 255 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/ProcessingQualityFlagsMW | Quality Flags on Pixel Level for the Multi-Wavelength method | NoUnits | uint16 | 65535 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/ProcessingQualityFlagsNUV | Quality Flags on Pixel Level for the Near UV method | NoUnits | uint16 | 65535 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/RootMeanSquareErrorOfFitPassedThreshold | Root-Mean-Square error of the multi-wavelength fit for aerosol models that passed the threshold ordered by increasing RMS error, scaled by a factor 10000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/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/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SingleScatteringAlbedoMWPrecision | Precision of the spectral Single Scattering Albedo at the reference wavelength for best fit aerosol model derived with the Multi-Wavelength method, scaled by a factor 1000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SingleScatteringAlbedoNUV | Spectral Single Scattering Albedo derived with the Near UV method, scaled by a factor 1000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SingleScatteringAlbedoPassedThreshold | Spectral Single Scattering Albedo of aerosol models that passed the threshold, ordered by increasing RMS error, scaled by a factor 1000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/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/SWATHS/ColumnAmountAerosol (60x557x4)/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/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SmallPixelRadiancePointerUV | Offset and count of nTimesSmallPixeUVl wrt nTimes | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SmallPixelRadiancePointerVIS | Offset and count of nTimesSmallPixelVIS wrt nTimes | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SmallPixelRadianceUV | Radiance of small pixel data column of the UV CCD | photons/ (s.nm.cm^2.sr) | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SmallPixelRadianceVIS | Radiance of small pixel data column of the VIS CCD | photons/ (s.nm.cm^2.sr) | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SmallPixelWavelengthUV | Wavelength of the small pixel data for the UV CCD | nm | uint16 | 65535 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/SmallPixelWavelengthVIS | Wavelength of the small pixel data for the VIS CCD | nm | uint16 | 65535 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/TerrainPressure | Pressure of the centre of the ground pixel | hPa | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/TerrainReflectivity | Reflectivity of the ground pixel, scaled by a factor 1000 | NoUnits | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Data Fields/XTrackQualityFlags | Across Track Quality Flags | NoUnits | uint8 | 255 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/GroundPixelQualityFlags | Groundpixel quality flags | NoUnits | uint16 | 65535 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/Latitude | Latitude of the center of the groundpixel | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/Longitude | Longitude of the center of the groundpixel | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/OrbitPhase | The place of OMI in orbit | NoUnits | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/SolarAzimuthAngle | Solar azimuth angle at WGS84 ellipsoid for center co-ordinate of the ground pixel, defined East-of-North | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation 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/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/SpacecraftAltitude | Altitude above WGS84 ellipsoid | m | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/SpacecraftLatitude | Geodetic Latitude above WGS84 ellipsoid | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/SpacecraftLongitude | Geodetic Longitude above WGS84 ellipsoid | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/TerrainHeight | Terrain height at for center co-ordinate of the ground pixel | m | int16 | -32767 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/Time | Time in TAI-93 format | s | float64 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation Fields/ViewingAzimuthAngle | Viewing azimuth angle at WGS84 ellipsoid for center co-ordinate of the ground pixel, defined Eastof-North | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/SWATHS/ColumnAmountAerosol (60x557x4)/Geolocation 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 INFORMATION/ArchiveMetadata.0 | HDFEOS INFORMATION/ArchiveMetadata.0 | N/A | OTHER | N/A | N/A | N/A |
| HDFEOS INFORMATION/CoreMetadata.0 | HDFEOS INFORMATION/CoreMetadata.0 | 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 |