N: 90 S: -90 E: 180 W: -180
Description
The Aura Ozone Monitoring Instrument (OMI) Version-3 Formaldehyde Product OMHCHO is now available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. The shortname for this Level-2 OMI total column Formaldehyde product is OMHCHO. The algorithm leads for this product are the US OMI scientists Dr. Kelly Chance and Dr. Thomas Kurosu from the Harvard-Smithsonian Center, Cambridge, MA. The OMHCHO product contains total vertical column HCHO, standard errors (rms and sigma), quality flags, geolocation and other ancillary information.
The OMHCHO 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). There are approximately 14 orbits per day. The average file size for the OMHCHO data product is about 5 MB.
Product Summary
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.
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READ-ME
PI DOCUMENTATION
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
GENERAL DOCUMENTATION
Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
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/OMI Total Column Amount HCHO/Data Fields/AirMassFactor | Molecule Specific Air Mass Factor (AMF) | NoUnits | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/AirMassFactorDiagnosticFlag | Diagnostic Flag for Molecule Specific AMF | NoUnits | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/AirMassFactorGeometric | Geometric Air Mass Factor (AMF) | NoUnits | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/Albedo | Albedo | NoUnits | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/AMFCloudFraction | Adjusted Cloud Fraction for AMF Computation | NoUnits | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/AMFCloudPressure | Adjusted Cloud Pressure for AMF Computation | hPa | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/AverageColumnAmount | Average Column Amount | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/AverageColumnUncertainty | Average Column Uncertainty | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/AverageFittingRMS | Average Fitting RMS | NoUnits | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/ClimatologyLevels | Climatology Levels | hPa | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/ColumnAmount | Column Amount | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/ColumnAmountDestriped | Column Amount with Destriping Correction | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/ColumnUncertainty | Column Uncertainty | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/FitConvergenceFlag | Fitting Convergence Flag | NoUnits | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/FittingRMS | Fitting RMS | NoUnits | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/GasProfile | Gas Profile | molecules cm-2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/MainDataQualityFlag | Main Data Quality Flag | NoUnits | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/MaximumColumnAmount | Maximum Column Amount for QA Flag 'good' | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/PixelCornerLatitudes | Pixel Corner Latitude Coordinates | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/PixelCornerLongitudes | Pixel Corner Longitude Coordinates | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceReferenceColumnAmount | Radiance Reference Fit Column Amount | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceReferenceColumnUncertainty | Radiance Reference Fit Column Uncertainty | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceReferenceColumnXTRFit | Radiance Reference Fit Column XTR Fit | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceReferenceConvergenceFlag | Radiance Reference Fit Convergence Flag | NoUnits | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceReferenceFittingRMS | Radiance Reference Fit RMS | NoUnits | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceReferenceLatitudeRange | Radiance Reference Fit Latitude Range | NoUnits | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceWavCalConvergenceFlag | Radiance Wavelength Calibration Convergence Flag | NoUnits | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/RadianceWavCalLatitudeRange | Radiance Wavelength Calibration Latitude Range | NoUnits | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/ReferenceSectorCorrectedVerticalColumn | Reference Sector Corrected Vertical Column | molec/cm2 | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/ScatteringWeights | Scattering Weights | NoUnits | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Data Fields/SolarWavCalConvergenceFlag | Solar Wavelength Calibration Convergence Flag | NoUnits | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/Latitude | Geodetic Latitude | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/Longitude | Geodetic Longitude | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/SolarAzimuthAngle | Solar Azimuth Angle | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/SolarZenithAngle | Solar Zenith Angle | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/SpacecraftAltitude | Altitude of Aura Spacecraft | m | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/TerrainHeight | Terrain Height | m | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/Time | Time in TAI units | s | float64 | -1.0E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/TimeUTC | Coordianted Universal Time | NoUnits | int16 | -30000 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/ViewingAzimuthAngle | Viewing Azimuth Angle | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/ViewingZenithAngle | Viewing Zenith Angle | deg | float32 | -1.0000000150475E+30 | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/XtrackQualityFlags | Cross-Track Quality Flags | NoUnits | int8 | N/A | N/A | N/A |
| HDFEOS/SWATHS/OMI Total Column Amount HCHO/Geolocation Fields/XtrackQualityFlagsExpanded | Expanded Cross-Track Quality Flags | NoUnits | int16 | -30000 | N/A | N/A |