Shortname: OMNO2 Longname: OMI/Aura Nitrogen Dioxide (NO2) Total & Troposph.Column 1-Orbit L2 Swath 13x24km PSF Version: 0.9.25 Date: 27 January 2004 Author(s): Pepijn Veefkind (KNMI) PGE Version: 0.9.25 Lead Algorithm Scientist: Folkert Boersma (KNMI), Jim Gleason (NASA), Pepijn Veefkind (KNMI) Lead Algorithm Developer: Pepijn Veefkind (KNMI) Lead PGE Developer: Jussi Johansson (SSF) PGE Developer(s): Otto Solin (SSF) Description: > This document specifies the product format for the OMNO2A, OMNO2B and OMNO2C Level 2 PGEs. These PGEs determine the total column and tropospheric column nitrogen dioxide (NO2) from OMI VIS measurements (Reference 1). The product is stored as one HDF-EOS 5 swath file for each granule (i.e., one orbit) of OMI Level 1B data, and has a size range of 1 to 30 Mb. Global Metadata: - Metadata Name: InstrumentName Mandatory: T Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Valids are "HIRDLS", "MLS", "OMI" and "TES". Data Source: OMNO2A Description: Actual is "OMI" (see Section 6.1 of Reference 2). - Metadata Name: ProcessLevel Mandatory: T Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: PCF Description: Actual is "2" (see Reference 7). - Metadata Name: GranuleMonth Mandatory: T Data Type: HE5T_NATIVE_INT Number of Values: 1 Range or Valids: 1 to 12 Data Source: OMNO2A Description: The month at the start of the granule. - Metadata Name: GranuleDay Mandatory: T Data Type: HE5T_NATIVE_INT Number of Values: 1 Range or Valids: 1 to 31 Data Source: OMNO2A Description: The day of the month at the start of the granule. - Metadata Name: GranuleYear Mandatory: T Data Type: HE5T_NATIVE_INT Number of Values: 1 Range or Valids: 2003 to 2099 Data Source: OMNO2A Description: The (four-digit) year at the start of the granule. - Metadata Name: TAI93At0zOfGranule Mandatory: T Data Type: HE5T_NATIVE_DOUBLE Number of Values: 1 Range or Valids: 0.0d+00 to 1.0d+30 Data Source: OMNO2A Description: TAI time at 00:00 UTC at date of start of granule. - Metadata Name: PGEVersion Mandatory: T Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Range is "0.0.0" to "9.9.99". Data Source: OMNO2A, OMNO2B and OMNO2C Description: Example is "0.9.20" (see Appendix K of Reference 3). - Metadata Name: ProcessingSystem Mandatory: T Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Valids are "OFFLINE", "NRT" and "VFD". Data Source: TBD Description: Actual is "OFFLINE" for OSIPS processing. - Metadata Name: NO2ColumnAmountHistogram Mandatory: T Data Type: HE5T_NATIVE_INT32 Number of Values: 31 Range or Valids: 0 to 1000000 Data Source: OMNO2A Description: > Histogram of NO2ColumnAmountInitial between 0 and 3x10^16 molecules/cm2, with bins of 1x10^15 molecules/cm^2. - Metadata Name: CloudAlbedo Mandatory: T Data Type: HE5T_NATIVE_FLOAT Number of Values: 1 Range or Valids: Range is 0.0 to 1.0 Data Source: OMCLDO2 Description: Cloud albedo as read from the cloud L2 Product. - Metadata Name: UnpolFldNumberOfOrbits Mandatory: T Data Type: HE5T_NATIVE_INT Number of Values: 1 Range or Valids: Range is 1 to 30 Data Source: OMNO2C Description: > Number of orbit swaths used to construct the smoothed unpolluted field. - Metadata Name: UnpolFldOrbitList Mandatory: T Data Type: HE5T_NATIVE_INT Number of Values: UnpolFldNumberOfOrbits Range or Valids: Range is 0 9999 Data Source: OMNO2C Description: > List of orbit numbers used to construct the smoothed unpolluted field (only as many as are specified by UnpolFldNumberOfOrbits are filled in) - Metadata Name: SolarProductMissing Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if the Solar product could not be opened, read, is in unexpected format or the data is missing. The Backup product is used in this case. - Metadata Name: SolarProductOutOfDate Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if the difference of the dates of the measurements of the Earth radiance and Solar irradiance is larger than maxSolarAge. - Metadata Name: SolarIrradianceWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if QAPctIrradianceWarning is larger than 0. - Metadata Name: SolarIrradianceWavelengthRegistrationWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if Set if WavelengthRegistrationCheck parameter for the irradiance spectrum is larger than the OPF threshold. - Metadata Name: BackupSolarProductUsed Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if the backup Solar product is used instead of the normal Solar product. - Metadata Name: ParametersInconsistent Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if there is an inconsistency between the OPF parameters and the parameters of the LUTs. - Metadata Name: RadianceParametersMissing Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if any of the general parameters from the L1B radiance product are missing. - Metadata Name: RadianceScienceQualityFlag Mandatory: T Data Type: VA255 Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set to the value set for the radiance product ScienceQualityFlag metadata attribute. - Metadata Name: IrradianceScienceQualityFlag Mandatory: T Data Type: VA255 Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set to the value set for the Solar product ScienceQualityFlag metadata attribute. - Metadata Name: CloudProductMissing Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 1 Data Source: OMNO2A Description: > Set if the Cloud product could not be opened, read or is in unexpected format. - Metadata Name: QAPctSunGlint Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 GroundPixelQualityFlags bit 4 is set. - Metadata Name: QAPctEclipse Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 GroundPixelQualityFlags bit 5 is set. - Metadata Name: QAPctIrradianceWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 0 is set. - Metadata Name: QAPctRadianceMissing Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 1 is set. - Metadata Name: QAPctRadianceError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 2 is set. - Metadata Name: QAPctRadianceWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 3 is set. - Metadata Name: QAPctCloudDataError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 4 is set. - Metadata Name: QAPctCloudDataWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 5 is set - Metadata Name: QAPctSnowIceDataError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 6 is set - Metadata Name: QAPctSCDError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 7 is set - Metadata Name: QAPctSCDWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 8 is set - Metadata Name: QAPctIAMFError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 9 is set - Metadata Name: QAPctIAMFWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 10 is set - Metadata Name: QAPctIVCDError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 11 is set - Metadata Name: QAPctIVCDWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 12 is set - Metadata Name: QAPctWavelengthRegistrationWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of ground pixels for which L2 FitQualityFlags bit 13 is set - Metadata Name: QAPctMeasMissing Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 0 is set - Metadata Name: QAPctMeasError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 1 is set - Metadata Name: QAPctMeasWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 2 is set - Metadata Name: QAPctRebinned Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 3 is set - Metadata Name: QAPctSAA Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 4 is set - Metadata Name: QAPctSpacecraftManeuver Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 5 is set - Metadata Name: QAPctInstrumentSettingsError Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 6 is set - Metadata Name: QAPctCloudDataNotSynchronized Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > Percent of measurements for which L2 MeasurementQualityFlags bit 7 is set - Metadata Name: QAPctAmfTableExtrapolation Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 0 is set - Metadata Name: QAPctAmfTableValueProblem Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 1 is set - Metadata Name: QAPctAmfProfileProblem Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 2 is set - Metadata Name: QAPctAmfPollutedHighTerrain Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 3 is set - Metadata Name: QAPctAmfLargeWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 4 is set - Metadata Name: QAPctAmfSmallWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 5 is set - Metadata Name: QAPctAmfStratWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 6 is set - Metadata Name: QAPctAmfTropWarning Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2B Description: > Percent of measurements for which L2 AMFQualityFlag bit 7 is set - Metadata Name: QAPctVcdTooSmall Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2C Description: > Percent of measurements for which L2 UnpolFldQualityFlag bit 0 is set - Metadata Name: QAPctVcdTooLarge Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2C Description: > Percent of measurements for which L2 UnpolFldQualityFlag bit 1 is set - Metadata Name: OPF_opfVersion Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_fittingWindow Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_fittingWindowColumnRange Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_level1ReadBufferSize Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_level2WriteBufferSize Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_meritFunction Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_fittingPolydegree Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_interpolationMethod Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_amfAngleUpperLimit Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_O3ReferenceTemperature Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_NO2ReferenceTemperature Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_O2O2ReferenceTemperature Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_H2OReferenceTemperature Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_wavelengthRegistrationCheckPixels Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_wavelengthRegistrationLimit Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxNSolarWavelengthsFlagged Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxNEarthWavelengthsFlagged Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxNEarthWavelengthsFlaggedMissing Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxSolarWavelnPrecision Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxEarthWavelnPrecision Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxScdPrecision Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxFitRms Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxSolarAge Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsVCD Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsSCD Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsAMF Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsEarthRad Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxEarthRadPrecision Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsSolarIrrad Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxSolarIrradPrecision Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsLatitude Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsLongitude Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsSZA Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsSAZ Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsVZA Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsVAZ Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsRAZ Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsSurfaceHeigth Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsSurfacePressure Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_limitsSurfaceAlbedo Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxSCDCovariance Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_maxSolarIrradianceAgeInDays Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_automaticQualityFailed Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_automaticQualitySuspect Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_albedoSnow Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_albedoWater Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_albedoLandThreshold Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_albedoWaterThreshold Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_albedoSeaIceNH Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. - Metadata Name: OPF_albedoSeaIceSH Mandatory: F Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A OPF Description: OMNO2A OPF parameter. Swath Metadata: - Metadata Name: NumTimes Mandatory: T Data Type: HE5T_NATIVE_INT32 Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: The number of "scan" lines in the swath. - Metadata Name: NumTimesSmallPixel Mandatory: T Data Type: HE5T_NATIVE_INT32 Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: The number of small pixel "scan" lines in the swath. - Metadata Name: NumLatitude Mandatory: T Data Type: HE5T_NATIVE_INT32 Number of Values: 1 Range or Valids: 0 to 9999 Data Source: TBD Description: Actual size of the dimension nLatitude. - Metadata Name: NumUnpolFldCoefs Mandatory: T Data Type: HE5T_NATIVE_INT32 Number of Values: 1 Range or Valids: 0 to 9999 Data Source: TBD Description: Actual size of the dimension nUnpolFldCoefs. - Metadata Name: VerticalCoordinate Mandatory: T Data Type: HE5T_NATIVE_CHAR Number of Values: 1 Range or Valids: Valids are "Pressure", "Altitude", "Potential Temperature" and "Total Column". Data Source: OMNO2A Description: Actual is "Total Column" (see Section 6.2 of Reference 2). Swath Dimensions: - Dimension Name: nXtrack Data Type: HE5T_NATIVE_INT Dimension Type: FIXED Number of Values: 1 Range or Valids: 1 to 120 Data Source: L1B Description: The number of ground pixels per OMI measurement. - Dimension Name: nTimes Data Type: HE5T_NATIVE_INT Dimension Type: UNLIMITED Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: The number of OMI measurements. - Dimension Name: nTimesSmallPixel Data Type: HE5T_NATIVE_INT Dimension Type: UNLIMITED Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: The number of OMI small pixel measurements. - Dimension Name: nSmallPixelPointer Data Type: HE5T_NATIVE_INT Dimension Type: FIXED (Actual value is 2) Number of Values: 1 Range or Valids: 0 to 9999 Data Source: OMNO2A Description: Number of entries used for the small pixel pointer. - Dimension Name: nWavelCheck Data Type: HE5T_NATIVE_INT Dimension Type: FIXED Number of Values: 1 Range or Valids: 0 to 9999 Data Source: OMNO2A Description: > Number of ground pixels per measurement for which the wavelength check is performed - Dimension Name: nPolynomial Data Type: HE5T_NATIVE_INT Dimension Type: FIXED Number of Values: 1 Range or Valids: 1 to 10 Data Source: OMNO2A Description: Number of polynomial coefficients used in the DOAS fit. - Dimension Name: nLatitude Data Type: HE5T_NATIVE_INT Dimension Type: UNLIMITED Number of Values: 1 Range or Valids: 1 to 10 Data Source: OMNO2C (TBC) Description: Number of Latitudes used for the background NO2 field. - Dimension Name: nUnpolFldCoefs Data Type: HE5T_NATIVE_INT Dimension Type: UNLIMITED Number of Values: 1 Range or Valids: 1 to 10 Data Source: OMNO2C (TBC) Description: Number of coefficients used for the smoothed unpolluted NO2 field - Dimension Name: Unlimited Data Type: HE5T_NATIVE_INT Dimension Type: UNLIMITED Number of Values: 1 Range or Valids: 0 to 9999 Data Source: PGE Description: Dimension used internally for unlimited data field dimensions. Geolocation Fields: - Field Name: Time Data Type: HE5T_NATIVE_DOUBLE Dimensions: nTimes Range or Valids: 0.0d+00 to 1.0d+30 Missing Value: "-1.2676506002282294d+30" Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: s Data Source: L1B Title: "Time at Start of Scan (s, TAI93)" Unique Field Definition: Aura-Shared Description: > The TAI93 time (in s) at the start of the "scan". - Field Name: Latitude Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is -90.0 to 90.0. Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: degree Data Source: L1B Title: "Latitude of the center of the groundpixel " Unique Field Definition: Aura-Shared Description: > The geodetic latitude (in degrees) at the center of the ground pixel. - Field Name: Longitude Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is -180.0 to 180.0. Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: degree Data Source: L1B Title: "Longitude of the center of the groundpixel" Unique Field Definition: Aura-Shared Description: > The geodetic longitude (in degrees) at the center of the ground pixel. - Field Name: SpacecraftLatitude Data Type: HE5T_NATIVE_FLOAT Dimensions: nTimes Range or Valids: Range is -90.0 to 90.0. Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: degree Data Source: L1B Title: "Geodetic Latitude above WGS84 ellipsoid " Unique Field Definition: Aura-Shared Description: > The geodetic latitude (in degrees) of the spacecraft. - Field Name: SpacecraftLongitude Data Type: HE5T_NATIVE_FLOAT Dimensions: nTimes Range or Valids: Range is -180.0 to 180.0. Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0e+00 Units: degree Data Source: L1B Title: "Geodetic Longitude above WGS84 ellipsoid " Unique Field Definition: Aura-Shared Description: > The geodetic longitude (in degrees) of the spacecraft. - Field Name: SpacecraftAltitude Data Type: HE5T_NATIVE_FLOAT Dimensions: nTimes Range or Valids: 0.0 to 1.0e+06 Missing Value: -1.2676506e+30 Offset: 0.0e+00 Scale Factor: 1.0e+00 Units: m Data Source: L1B Title: "Altitude above WGS84 ellipsoid " Unique Field Definition: Aura-Shared Description: > The altitude (in meters) of the spacecraft. - Field Name: SolarZenithAngle Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is -90.0 to 90.0 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: deg Data Source: L1B Title: "Solar zenith angle at WGS84 ellipsoid for center co-ordinate of the ground pixel " Unique Field Definition: OMI-Specific Description: > The solar zenith angle (in deg) at the center of the ground pixel. - Field Name: SolarAzimuthAngle Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is -180.0 to 180.0 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: deg Data Source: L1B Title: " Solar azimuth angle at WGS84 ellipsoid for center co-ordinate of the ground pixel, defined East-of-North " Unique Field Definition: OMI-Specific Description: > The solar azimuth angle (in deg) at the center of the ground pixel. - Field Name: ViewingZenithAngle Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is -90.0 to 90.0 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: deg Data Source: L1B Title: "Viewing zenith angle at WGS84 ellipsoid for center co-ordinate of the ground pixel " Unique Field Definition: OMI-Specific Description: > The viewing zenith angle (in deg) at the center of the ground pixel. - Field Name: ViewingAzimuthAngle Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is -180.0 to 180.0 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: deg Data Source: L1B Title: > " Viewing azimuth angle at WGS84 ellipsoid for center co-ordinate of the ground pixel, defined East-of-North " Unique Field Definition: OMI-Specific Description: > The viewing azimuth angle (in deg) at the center of the ground pixel. - Field Name: GroundPixelQualityFlags Data Type: HE5T_NATIVE_UINT16 Dimensions: nTimes,nXtrack Range or Valids: Not meaningful. Missing Value: 65535 Offset: 0.0d0 Scale Factor: 1.0d0 Units: NoUnits Data Source: L1B Title: "Ground Pixel Quality Flags" Unique Field Definition: OMI-Specific Description: > Bits 0 to 3 together contain the land/water flags: 0 - shallow ocean 1 - land 2 - shallow inland water 3 - ocean coastline/lake shoreline 4 - ephemeral (intermittent) water 5 - deep inland water 6 - continental shelf ocean 7 - deep ocean 8-14 - not used 15 - error flag for land/water Bits 4 to 6 are flags that are set to 0 for FALSE, or 1 for TRUE: Bit 4 - sun glint possibility flag Bit 5 - solar eclipse possibility flag Bit 6 - geolocation error flag Bit 7 is reserved for future use (currently set to 0). Bits 8 to 14 together contain the snow/ice flags (based on NISE): 0 - snow-free land 1-100 - sea ice concentration (percent) 101 - permanent ice (Greenland, Antarctica) 102 - not used 103 - dry snow 104 - ocean (NISE-255) 105-123 - reserved for future use 124 - mixed pixels at coastline (NISE-252) 125 - suspect ice value (NISE-253) 126 - corners undefined (NISE-254) 127 - error Bit 15 - NISE nearest neighbor filling flag. (See Section 6.2 of Reference 4 for more details.) Data Fields: - Field Name: ColumnAmountNO2 Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2C Title: "NO2 vertical column density " Unique Field Definition: OMI-Specific Description: > NO2 Vertical Column Density (Total Column) in molec/cm^2. - Field Name: ColumnAmountNO2Std Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2C Title: "Precision of the NO2 vertical column density " Unique Field Definition: OMI-Specific Description: > Precision of the NO2 Vertical Column Density (Total Column) in molec/cm^2. - Field Name: ColumnAmountNO2Initial Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "NO2 initial vertical column density " Unique Field Definition: OMI-Specific Description: > NO2 Initial Vertical Column Density (Total Column) in molec/cm^2. For these data a simple air mass factor assumption is used. - Field Name: ColumnAmountNO2InitialStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "Precision of the NO2 initial vertical column density " Unique Field Definition: OMI-Specific Description: > Precision of the NO2 Initital Vertical Column Density (Total Column) in molec/cm^2. - Field Name: ColumnAmountNO2Trop Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2C Title: "NO2 tropospheric column density" Unique Field Definition: OMI-Specific Description: > NO2 Tropospheric Column Density in molec/cm^2. - Field Name: ColumnAmountNO2TropStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2C Title: "Precision of the NO2 tropospheric column density" Unique Field Definition: OMI-Specific Description: > Precision of the NO2 Tropospheric Column Density in molec/cm^2. - Field Name: ColumnAmountNO2Unpolluted Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2C Title: "NO2 unpolluted column density" Unique Field Definition: OMI-Specific Description: > NO2 unpolluted column density in molec/cm^2. - Field Name: ColumnAmountNO2UnpollutedStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2C Title: "Precision of the NO2 unpolluted column density " Unique Field Definition: OMI-Specific Description: > Precision of the NO2 unpolluted column density in molec/cm^2. - Field Name: TropFractionUnpolluted Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2C Title: > "Fraction of the NO2 unpolluted column below the tropopause." Unique Field Definition: OMI-Specific Description: > The fraction of the NO2 unpolluted column density that is below the tropopause. - Field Name: TropFractionUnpollutedStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2C Title: > "Precision of the fraction of the NO2 unpolluted column that is below the tropopause." Unique Field Definition: OMI-Specific Description: > Precision of the fraction of the NO2 unpolluted column density below the tropopause. - Field Name: SlantColumnAmountNO2 Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "NO2 slant column density " Unique Field Definition: OMI-Specific Description: > NO2 Slant Column Density in molec/cm^2. - Field Name: SlantColumnAmountNO2Std Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "Precision of the NO2 slant column density " Unique Field Definition: OMI-Specific Description: > Precision of the NO2 Slant Column Density in molec/cm^2. - Field Name: RingCoefficient Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Fitted amount of Ring effect" Unique Field Definition: OMI-Specific Description: > Amount of Ring effect determined by the DOAS fit. - Field Name: RingCoefficientStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Precision of the fitted amount of Ring effect" Unique Field Definition: OMI-Specific Description: > Precision of the amount of Ring effect determined by the DOAS fit. - Field Name: SlantColumnAmountO3 Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "O3 slant column density " Unique Field Definition: OMI-Specific Description: > O3 Slant Column Density in molec/cm^2. - Field Name: SlantColumnAmountO3Std Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "Precision of the O3 slant column density " Unique Field Definition: OMI-Specific Description: > Precision of the O3 Slant Column Density in molec/cm^2. - Field Name: SlantColumnAmountH2O Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "H2O slant column density " Unique Field Definition: OMI-Specific Description: > H2O Slant Column Density in molec/cm^2. - Field Name: SlantColumnAmountH2OStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: molec/cm^2 Data Source: OMNO2A Title: "Precision of the H2O slant column density " Unique Field Definition: OMI-Specific Description: > Precision of the H2O Slant Column Density in molec/cm^2. - Field Name: SlantColumnAmountO2O2 Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d-43 Units: molec/cm^2 Data Source: OMNO2A Title: "O2-O2 slant column density " Unique Field Definition: OMI-Specific Description: > O2-O2 Slant Column Density in molec/cm^2. - Field Name: SlantColumnAmountO2O2Std Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d-43 Units: molec/cm^2 Data Source: OMNO2A Title: "Precision of the O2-O2 slant column density " Unique Field Definition: OMI-Specific Description: > Precision of the O2-O2 Slant Column Density in molec/cm^2. - Field Name: PolynomialCoefficients Data Type: HE5T_NATIVE_FLOAT Dimensions: nPolynomial,nXtrack,nTimes Range or Valids: Range is 0.0 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Polynomial Coefficients" Unique Field Definition: OMI-Specific Description: > Polynomial coefficients determined by the DOAS fit. - Field Name: PolynomialCoefficientsStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nPolynomial,nXtrack,nTimes Range or Valids: Range is -1.0e30 to 1.0e30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Precision of the Polynomial Coefficients" Unique Field Definition: OMI-Specific Description: > Precision of the polynomial coefficients determined by the DOAS fit. - Field Name: ChiSquaredOfFit Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Chi-squared diagnostics of DOAS fit." Unique Field Definition: OMI-Specific Description: > Chi-squared diagnostics of DOAS fit. - Field Name: RootMeanSquareErrorOfFit Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: sr^-1 Data Source: OMNO2A Title: "Root-mean-square error of DOAS fit." Unique Field Definition: OMI-Specific Description: > Root-mean-square error of DOAS fit. - Field Name: AMFInitial Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Initial AMF" Unique Field Definition: OMI-Specific Description: > Initial Air Mass Factor. - Field Name: AMFInitialStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Precision of the Initial AMF" Unique Field Definition: OMI-Specific Description: > Precision of the Initial Air Mass Factor. - Field Name: AMFInitialClear Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Initial AMF for Cloud-free Conditions" Unique Field Definition: OMI-Specific Description: > Initial Air Mass Factor for the cloud-free part of the ground pixel. - Field Name: AMFInitialClearStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Precision of the Initial AMF for Cloud-free Conditions" Unique Field Definition: OMI-Specific Description: > Precision of the Initial Air Mass Factor for the cloud-free part of the ground pixel. - Field Name: AMFInitialCloudy Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Initial AMF for cloudy Conditions" Unique Field Definition: OMI-Specific Description: > Initial Air Mass Factor for the cloudy part of the ground pixel. - Field Name: AMFInitialCloudyStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Precision of the Initial AMF for cloudy Conditions" Unique Field Definition: OMI-Specific Description: > Precision of the Initial Air Mass Factor for the cloudy part of the ground pixel. - Field Name: AMFUnpolluted Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Unpolluted AMF" Unique Field Definition: OMI-Specific Description: > Unpolluted Air Mass Factor. - Field Name: AMFUnpollutedStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Precision of the Unpolluted AMF" Unique Field Definition: OMI-Specific Description: > Precision of the Unpolluted Air Mass Factor. - Field Name: AMFUnpollutedClear Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Unpolluted AMF for Cloud-free Conditions" Unique Field Definition: OMI-Specific Description: > Unpolluted Air Mass Factor for the cloud-free part of the ground pixel. - Field Name: AMFUnpollutedClearStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Precision of the Unpolluted AMF for Cloud-free Conditions" Unique Field Definition: OMI-Specific Description: > Precision of the Unpolluted Air Mass Factor for the cloud-free part of the ground pixel. - Field Name: AMFUnpollutedCloudy Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Unpolluted AMF for cloudy Conditions" Unique Field Definition: OMI-Specific Description: > Unpolluted Air Mass Factor for the cloudy part of the ground pixel. - Field Name: AMFUnpollutedCloudyStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Precision of the Unpolluted AMF for cloudy Conditions" Unique Field Definition: OMI-Specific Description: > Precision of the Unpolluted Air Mass Factor for the cloudy part of the ground pixel. - Field Name: AMFPolluted Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Polluted AMF" Unique Field Definition: OMI-Specific Description: > Polluted Air Mass Factor. - Field Name: AMFPollutedStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Precision of the Polluted AMF" Unique Field Definition: OMI-Specific Description: > Precision of the Polluted Air Mass Factor. - Field Name: AMFPollutedClear Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Polluted AMF for Cloud-free Conditions" Unique Field Definition: OMI-Specific Description: > Polluted Air Mass Factor for the cloud-free part of the ground pixel. - Field Name: AMFPollutedClearStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Precision of the Polluted AMF for Cloud-free Conditions" Unique Field Definition: OMI-Specific Description: > Precision of the Polluted Air Mass Factor for the cloud-free part of the ground pixel. - Field Name: AMFPollutedCloudy Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Polluted AMF for cloudy Conditions" Unique Field Definition: OMI-Specific Description: > Polluted Air Mass Factor for the cloudy part of the ground pixel. - Field Name: AMFPollutedCloudyStd Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: 0.0 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Precision of the Polluted AMF for cloudy Conditions" Unique Field Definition: OMI-Specific Description: > Precision of the Polluted Air Mass Factor for the cloudy part of the ground pixel. - Field Name: CloudFraction Data Type: HE5T_NATIVE_INT16 Dimensions: nXtrack,nTimes Range or Valids: Range is 0 to 1000 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 1000.0d+00 Units: NoUnits Data Source: L2 OMCLDO2 Title: " Effective cloud fraction" Unique Field Definition: OMI-Specific Description: > Effective cloud fraction, scaled by a factor 1000. - Field Name: CloudFractionStd Data Type: HE5T_NATIVE_INT16 Dimensions: nXtrack,nTimes Range or Valids: Range is 0 to 1000 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 1000.0d+00 Units: NoUnits Data Source: L2 OMCLDO2 Title: " Effective cloud fraction precision" Unique Field Definition: OMI-Specific Description: > Effective cloud fraction precision, scaled by a factor 1000. - Field Name: CloudRadianceFraction Data Type: HE5T_NATIVE_INT16 Dimensions: nXtrack,nTimes Range or Valids: Range is 0 to 1000 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 1000.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Fraction of the radiance from the cloudy part " Unique Field Definition: OMI-Specific Description: > Fraction of the radiance that comes from the cloudy part of the ground pixel, scaled by a factor 1000. - Field Name: CloudPressure Data Type: HE5T_NATIVE_INT16 Dimensions: nXtrack,nTimes Range or Valids: Range is 0 to 1500 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: hPa Data Source: L2 OMCLDO2 Title: "Effective cloud pressure " Unique Field Definition: OMI-Specific Description: > Effective cloud pressure in hPa. - Field Name: CloudPressureStd Data Type: HE5T_NATIVE_INT16 Dimensions: nXtrack,nTimes Range or Valids: Range is 0 to 1500 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: hPa Data Source: L2 OMCLDO2 Title: "Effective cloud pressure precision" Unique Field Definition: OMI-Specific Description: > Precision of the effective cloud pressure in hPa. - Field Name: TerrainReflectivity Data Type: HE5T_NATIVE_INT16 Dimensions: nXtrack,nTimes Range or Valids: Range is 0 to 1000 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 100.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Reflectivity of the ground pixel" Unique Field Definition: OMI-Specific Description: > Reflectivity of the ground pixel, scaled by a factor 1000. - Field Name: TerrainPressure Data Type: HE5T_NATIVE_INT16 Dimensions: nXtrack,nTimes Range or Valids: Range is 0 to 1500 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: hPa Data Source: OMNO2A Title: "Pressure of the center of the ground pixel " Unique Field Definition: OMI-Specific Description: > Pressure of the center of the ground pixel in hPa. - Field Name: TerrainHeight Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimes Range or Valids: Range is -100.0 to 10000.0. Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: m Data Source: L1B Title: " Terrain height at for center co-ordinate of the ground pixel " Unique Field Definition: OMI-Specific Description: > The terrain height (in m) at the center of the ground pixel (from OMI Level 1B file). - Field Name: SmallPixelRadiance Data Type: HE5T_NATIVE_FLOAT Dimensions: nXtrack,nTimesSmallPixel Range or Valids: 0.0 to 1.0d+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: photons/(s.nm.cm^2.sr) Data Source: L1B Title: "Radiance of small pixel data column " Unique Field Definition: OMI-Specific Description: > Radiance of small pixel data column of VIS CCD. - Field Name: SmallPixelRadiancePointer Data Type: HE5T_NATIVE_INT16 Dimensions: nTimesSmallPixelPointer, nTimes Range or Valids: Range is 0 to 30000 Missing Value: -32767 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Offset and count of nTimesSmallPixel wrt nTimes " Unique Field Definition: OMI-Specific Description: > SmallPixelRadiancePointer maps the SmallPixelRadiance to the groundpixels. Example: For OMI measurement iTimes the SmallPixelRadiancePointer has a value (i,j). The SmallPixelRadiance data for the OMI measurement itime start at SmallPixelRadiance(i,0) and there are j small pixels in the ground pixel available. So for the first ground pixel the small pixel data are given in SmallPixelRadiance(i:i+j,0). - Field Name: InstrumentConfigurationId Data Type: HE5T_NATIVE_UINT8 Dimensions: nTimes Range or Valids: 0 to 255 Missing Value: Not applicable Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: L1B Title: " Unique ID for instrument settings for current measurement." Unique Field Definition: OMI-Specific Description: > Unique ID for instrument settings for current measurement. - Field Name: MeasurementQualityFlags Data Type: HE5T_NATIVE_UINT8 Dimensions: nTimes Range or Valids: 0 to 255 Missing Value: Not applicable Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Bit level quality flags at measurement level" Unique Field Definition: OMI-Specific Description: > Bit Description Bit 0 Measurement Missing Flag Set if all Ground Pixels give Earth Radiance Missing Flag. Bit 1 Measurement Error Flag Set if any of the L1B MeasurementQualityFlags bit 0, 1 or 3 are set for the Radiance or for the used Solar product. Bit 2 Measurement Warning Flag Set if any of the L1B MeasurementQualityFlags bit 2, 4, 5, 8, 9 are set for the Radiance or for the used Solar product. Bit 3 Rebinned Measurement Flag Set if L1B radiance MeasurmentQualityFlags bit 7 is set to 1. Bit 4 SAA Flag Set if L1B MeasurmentQualityFlags bit 10 is set to 1, for the Radiance or for the used Solar product. Bit 5 Spacecraft Maneuver Flag Set if L1B MeasurmentQualityFlags bit 11 is set to 1, for the Radiance for the used Solar product. Bit 6 Instrument Settings Error Flag The Earth and Solar InstrumentConfigurationIDs are not compatible. Bit 7 Cloud Data Not Synchronized Flag Set if radiance and cloud data are not time synchronized. - Field Name: FitQualityFlags Data Type: HE5T_NATIVE_UINT16 Dimensions: nXtrack, nTimes Range or Valids: 0 to 65535 Missing Value: Not applicable Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2A Title: "Bit level quality flags at ground pixel level" Unique Field Definition: OMI-Specific Description: > Bit Description Bit 0 Solar Irradiance Warning Flag For any of the irradiance pixels contained in the fit window: L1B PixelQualityFlags bit 3-10 is set wavelenghtPrecision > maxWavelengthPrecision wavelengthPrecision <= 0 wavelengthPrecision contains fill value irradiancePrecision > maxIrradiancePrecision irradiancePrecision <= 0 irradiancePrecision contains fill value Bit 1 Earth Radiance Missing Flag For this ground pixel the number of spectral pixels flagged with the L1B PixelQualityFlags bit 0 is larger than threshold set in the OPF, or the number of spectral pixels is too small to perform the fitting. Bit 2 Earth Radiance Error Flag For this ground pixel the number of spectral pixels flagged with the L1B PixelQualityFlags bit 0-2 is larger than a threshold set in the OPF. Bit 3 Earth Radiance Warning Flag For any of the radiance pixels contained in the fit window: L1B PixelQualityFlags bit 3-10 is set wavelenghtPrecision > maxWavelengthPrecision wavelengthPrecision <= 0 wavelengthPrecision contains fill value radiancePrecision > maxRadiancePrecision radiancePrecision <= 0 radiancePrecision contains fill value Any of the radiance or geolocation fields used is out-of-bound Bit 4 Cloud Data Error Flag Cloud fraction set to zero flag, because the cloud data is missing or invalid. Note that if the cloud product is not synchronized the cloud data is invalid. Bit 5 Cloud Data Warning Flag A warning flag is set for the cloud data Bit 6 Snow/Ice Data Error Flag Set if Snow/Ice data from cloud product is missing or invalid. Bit 7 SCD Error Flag Set if SCD fit returned error Bit 8 SCD Warning Flag Set if any of the following occurrences:· SCD precision > maxSCDPrecision· RMS Error > RMSErrorFlag SCD Covariance > maxSCDCovarianceSCD is less than minSCD or SCD is larger than maxSCD Bit 9 IAMF Error Flag Set if computation of AMFInitialClear or AMFInitialCloudy failed Bit 10 IAMF Warning Flag Set if computation of AMFInitialClear or AMFInitialCloudy returned warning because: Extrapolation of the LUTs Bit 11 IVCD Missing Flag Set if Initial VCD could not be computed. Bit 12 IVCD Warning Flag Set if any of the following:· Cloud Data Warning Flag set· SCD Warning Flag set· IAMF Warning Flag set· IVCD computation returned warning· IVCD is less than minIVCD or IVCD is larger than maxIVCD IVCD precision > maxIVCDprecision Bit 13 Wavelength Registration Warning Flag Set if for any of the ground pixels the WavelengthRegistrationCheck parameter is larger than a threshold set in the OPF. Bit 14 Reserved Bit 15 Reserved - Field Name: AMFQualityFlags Data Type: HE5T_NATIVE_UINT8 Dimensions: nXtrack, nTimes Range or Valids: 0 to 255 Missing Value: Not applicable Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2B Title: "Bit level quality flags at ground pixel level" Unique Field Definition: OMI-Specific Description: > Bit 0 Table Extrapolation Flag Indicates that extrapolations were done beyond the edges of the dAMF lookup tables. Bit 1 dAMF Table Unexpected Contents Flag Flag set indicates suspect values were found in the dAMF (altitude resolved air mass factor) lookup table. Bit 2 NO2 Profile Table Unexpected Contents Flag Flag set indicates suspect values were found in the NO2 Profile lookup tables. Bit 3 Polluted Profile over High Terrain Flag Flag set indicates that polluted profile was detected, but over high terrain. Bit 4 Large AMF Calculated Flag Flag set indicates the calculated value of any of the AMFs was larger than the maximum threshold specified in the OPF. Bit 5 Small AMF calculated Flag Flag set indicates the calculated value of any of the AMFs was smaller than the minimum threshold specified in the OPF. Bit 6 Suspect Stratospheric AMF Flag Flag set indicates the calculated stratospheric component of the AMF is out of the range specified in the OPF. Bit 7 Suspect Tropospheric AMF Flag Flag set indicates the calculated tropospheric component of the AMF is out of the range specified in the OPF. - Field Name: WavelengthRegistrationCheck Data Type: HE5T_NATIVE_FLOAT Dimensions: nWavelCheck, nTimes Range or Valids: Range is -1e+30 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: nm Data Source: OMNO2A Title: "Result from wavelength check algorithm " Unique Field Definition: OMI-Specific Description: > Spectral shift determined by the wavelength check algorithm. This algorithm performs a spectral calibration on a small window. - Field Name: WavelengthRegistrationCheckPrecision Data Type: HE5T_NATIVE_FLOAT Dimensions: nWavelCheck, nTimes Range or Valids: Range is -1e+30 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: nm Data Source: OMNO2A Title: "Precision of the result from wavelength check algorithm " Unique Field Definition: OMI-Specific Description: > Precision of the spectral shift determined by the wavelength check algorithm. - Field Name: UnpolFldCoefficients Data Type: HE5T_NATIVE_FLOAT Dimensions: nUnpolFldCoefs, nLatitude Range or Valids: Range is -1e+30 to 1.0e+30 Missing Value: -1.2676506e+30 Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2C Title: "Smoothing coefficients for the unpolluted field" Unique Field Definition: OMI-Specific Description: > Smoothing coefficients for the unpolluted field. - Field Name: UnpolFldLatBandQualityFlags Data Type: HE5T_NATIVE_UINT8 Dimensions: nLatitude Range or Valids: Range is 0 to 255 Missing Value: Not applicable Offset: 0.0d+00 Scale Factor: 1.0d+00 Units: NoUnits Data Source: OMNO2C Title: " Bit level quality flags on latitude band level" Unique Field Definition: OMI-Specific Description: > Bit 0 Too many gaps Flag set indicates the smoothed unpolluted field could not be produced for this latitude because of gaps in the coverage. Bit 1 Used meridional averaging to fill Flag set indicates that some or all of the smoothed unpolluted field for this latitude band was produced using meridional smoothing to fill in gaps in the zonal coverage. Bit 2 High variance after filtering Flag set indicates that the variance of the Initial Vertical Column Densities, that remain after filtering, about the smoothed field is larger than the threshold value read from the OPF. Bit 3-7 Reserved Core Metadata: - Metadata Name: SizeMBECSDataGranule Mandatory: F Data Type: LF Number of Values: 1 Range or Valids: 0.00d+00 to 1.00d+04 Data Source: DSS Description: > - Metadata Name: ReprocessingPlanned Mandatory: T Data Type: VA45 Number of Values: 1 Range or Valids: > Valids are "no further update anticipated", "further update is anticipated" and "further update anticipated using enhanced PGE". Data Source: DP Description: Actual is "further update is anticipated". - Metadata Name: ReprocessingActual Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: > Valids are "processed 1 time", "processed 2 times", etc... Data Source: PCF Description: > An indication of what reprocessing has been performed on the granule. - Metadata Name: LocalVersionID Mandatory: T Data Type: VA Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: PCF Description: > Actual is "RFC1321 MD5 = not yet calculated" - Metadata Name: LocalGranuleID Mandatory: T Data Type: VA80 Number of Values: 1 Range or Valids: > "OMI-Aura_L1-OMNO2_2003m0101t0000-o00000_v001-2003m0101t000000.he5" to "OMI-Aura_L1-OMNO2_2099m1231t2359-o99999_v999-2099m1231t235959.he5" Data Source: OMNO2A Description: > Example is "OMI-Aura_L1-OMNO2_2002m0630t2354-o21434_v001-2003m0515t181917.he5" (see Appendix E of Reference 3). - Metadata Name: ProductionDateTime Mandatory: T Data Type: DT Number of Values: 1 Range or Valids: > "2003-01-01T00:00:00.000Z" to "2099-12-31T24:59:59.999Z" Data Source: TK Description: The date and time of the Level 2 processing. - Metadata Name: DayNightFlag Mandatory: T Data Type: VA40 Number of Values: 1 Range or Valids: Valids are "Day", "Night", "Both", "NA", "D", "N". Data Source: MCF Description: > Actual is "Day". - Metadata Name: ParameterName Mandatory: T Data Type: VA40 Number of Values: 1 Range or Valids: Valid is "Nitrogen_Dioxide_Total_and_Tropospheric_Column". Data Source: OMNO2A Description: > The measured science parameter expressed in the granule. - Metadata Name: AutomaticQualityFlag Mandatory: T Data Type: VA64 Number of Values: 1 Range or Valids: Valids are "Passed", "Suspect" and "Failed". Data Source: OMNO2A Description: > A granule-level quality flag that applies generally to the granule and specifically to the parameters at the granule level. - Metadata Name: AutomaticQualityFlagExplanation Mandatory: T Data Type: VA255 Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: OMNO2A Description: > Example: The value is based on a combination of the RadianceScienceQualityFlag, IrradianceScienceQualityFlag, , QAPctCloudDataError, QAPctSCDError and QAPctIVCDError. Thresholds used: xx% for Failed and yy% for Suspect. - Metadata Name: OperationalQualityFlag Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: > Valids are "Passed", "Failed", "Being Investigated", "Not Investigated", "Inferred Passed", "Inferred Failed" and "Suspect". Data Source: MCF Description: > Actual is "Passed". - Metadata Name: OperationalQualityFlagExplanation Mandatory: T Data Type: VA255 Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: MCF Description: > “This granule passed operational tests that were administered by the OMI SIPS. QA metadata was extracted and the file was successfully read using standard HDF-EOS utilities.” - Metadata Name: ScienceQualityFlag Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: > Valids are "Passed", "Failed", "Being Investigated", "Not Investigated", "Inferred Passed", "Inferred Failed" and "Suspect". Data Source: DP Description: Actual is "Not Investigated". - Metadata Name: ScienceQualityFlagExplanation Mandatory: T Data Type: VA255 Number of Values: 1 Range or Valids: Not applicable (free format). Data Source: DP Description: > “An updated science quality flag and explanation is put in the product .met file when a granule has been evaluated. The flag value in this file, Not Investigated, is an automatic default that is put in every granule during production.” - Metadata Name: QAPercentMissingData Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > The percent of the data in the granule that are missing. - Metadata Name: QAPercentOutofBoundsData Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 100 Data Source: OMNO2A Description: > The percent of the data in the granule that are out of bounds data. - Metadata Name: OrbitNumber Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 1 to 999999 Data Source: L1B Description: The OMI orbit number. - Metadata Name: EquatorCrossingDate Mandatory: T Data Type: D Number of Values: 1 Range or Valids: Range is "2003-01-01" to "2099-12-31". Data Source: L1B Description: > The date of the ascending equator crossing in the granule. - Metadata Name: EquatorCrossingLongitude Mandatory: T Data Type: LF Number of Values: 1 Range or Valids: Range is -1.80d-02 to 1.80d+02. Data Source: L1B Description: > The terrestrial longitude of the ascending equator crossing in the granule. - Metadata Name: EquatorCrossingTime Mandatory: T Data Type: T Number of Values: 1 Range or Valids: Range is "01:00:0.000000" to "01:59:59.999999". Data Source: L1B Description: > The time of the ascending equator crossing in the granule. - Metadata Name: ShortName Mandatory: T Data Type: VA8 Number of Values: 1 Range or Valids: Valid is "OMNO2". Data Source: MCF Description: Actual is "OMNO2". - Metadata Name: VersionID Mandatory: T Data Type: SI Number of Values: 1 Range or Valids: 000 to 999 Data Source: MCF Description: Actual is 1. - Metadata Name: InputPointer Mandatory: T Data Type: VA255 Number of Values: 0 to 20 Range or Valids: > Valid file names, each in double quotes, separated by commas, all surrounded by curved brackets. Data Source: OMNO2A, OMNO2B, OMNO2C Description: > Example is ("OMNO2A_OPF.txt", "OMI-Aura_L1-SML1BRVG_2002d182t0629-o21438_v001-2002d354t1817.he4", "OMI-Aura_L2-OMCLDO2_2002d182t0629-o21438_v001-2002d354t1817.he5", "GOMEsfcrefl.he5", "ProfileLut.h5", "TemperatureLut.h5", "damf.h5", "NO2RefSpec_VIS_SIPS.dat", "O3RefSpecOMI_vis.dat", "O4RefSpecOMI.dat") - Metadata Name: RangeBeginningDate Mandatory: T Data Type: D Number of Values: 1 Range or Valids: Range is "2003-01-01" to "2099-12-31". Data Source: L1B Description: The year, month and day when the granule began. - Metadata Name: RangeBeginningTime Mandatory: T Data Type: T Number of Values: 1 Range or Valids: Range is "00:00:00.000000" to "23:59:59.999999". Data Source: L1B Description: > The hour, minute, second and fraction of a second when the granule began. - Metadata Name: RangeEndingDate Mandatory: T Data Type: D Number of Values: 1 Range or Valids: 2003-01-01" to "2099-12-31" Data Source: L1B Description: The year, month and day when the granule ended. - Metadata Name: RangeEndingTime Mandatory: T Data Type: T Number of Values: 1 Range or Valids: Range is "00:00:00.000000" to "23:59:59.999999". Data Source: L1B Description: > The hour, minute, second and fraction of a second when the granule ended. - Metadata Name: PGEVersion Mandatory: T Data Type: VA10 Number of Values: 1 Range or Valids: Range is "0.0.0" to "9.9.99". Data Source: PCF Description: Example is "0.9.20" (see Appendix K of Reference 3). - Metadata Name: AssociatedInstrumentShortName Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: Valid is "OMI". Data Source: MCF Description: Actual is "OMI". - Metadata Name: AssociatedPlatformShortName Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: Valid is "Aura". Data Source: MCF Description: Actual is "Aura". - Metadata Name: AssociatedSensorShortName Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: Valids are "CCD Ultra Violet" and "CCD Visible". Data Source: MCF Description: Actual is "CCD Ultra Violet". - Metadata Name: OperationMode Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: > Valids are "Calibration", "Diagnostic", "Initialization", "Launch", "Normal", "Roll", "Routine", "Safe", "Solar Calibration", "Standby", "Survival" and "Test". Data Source: PCF Description: Actual is "Normal". Product Specific Attributes: - Metadata Name: NrMeasurements Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: > The number of measurements in the granule (per output product). - Metadata Name: NrZoom Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: The number of measurements in zoom modes. - Metadata Name: NrSpatialZoom Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: The number of measurements in spatial zoom mode. - Metadata Name: NrSpectralZoom Mandatory: T Data Type: I Number of Values: 1 Range or Valids: 0 to 9999 Data Source: L1B Description: The number of measurements in spectral zoom mode. - Metadata Name: ExpeditedData Mandatory: T Data Type: VA10 Number of Values: 1 Range or Valids: Valids are "TRUE" and "FALSE". Data Source: L1B Description: The indicator for expedited L0 data. - Metadata Name: SouthAtlanticAnomalyCrossing Mandatory: T Data Type: VA10 Number of Values: 1 Range or Valids: Valids are "TRUE" and "FALSE". Data Source: L1B Description: > The indicator that during part of the measurements the spacecraft was in the SAA. - Metadata Name: SpacecraftManeuverFlag Mandatory: T Data Type: VA10 Number of Values: 1 Range or Valids: Valids are "TRUE", "FALSE" and "UNKNOWN". Data Source: L1B Description: > The indicator that during part of the measurements the spacecraft was performing a maneuver. - Metadata Name: SolarEclipse Mandatory: T Data Type: VA10 Number of Values: 1 Range or Valids: Valids are "TRUE" and "FALSE". Data Source: L1B Description: > The indicator that during part of the measurements a solar eclipse occurred. - Metadata Name: InstrumentConfigurationIDs Mandatory: T Data Type: SI Number of Values: 1 to 256 Range or Valids: 0 to 255 Data Source: L1B Description: > An array containing the instrument configuration identifiers used for the measurements. - Metadata Name: MasterClockPeriods Mandatory: T Data Type: F Number of Values: 1 to 128 Range or Valids: 0.0 to 10.0 Data Source: L1B Description: > An array containing the master clock periods in seconds used for the measurements. - Metadata Name: ExposureTimes Mandatory: T Data Type: F Number of Values: 1 to 256 Range or Valids: 0.0 to 2000.0 Data Source: L1B Description: > An array containing the exposure times in seconds used for the measurements. - Metadata Name: PathNr Mandatory: T Data Type: I Number of Values: 1 to 500 Range or Valids: 1 to 466 Data Source: L1B Description: Number of the NOSE path within the repeat cycle. - Metadata Name: StartBlockNr Mandatory: T Data Type: SI Number of Values: 1 to 500 Range or Valids: 1 to 50 Data Source: L1B Description: Number of the NOSE start block along the track. - Metadata Name: EndBlockNr Mandatory: T Data Type: SI Number of Values: 1 to 500 Range or Valids: 1 to 50 Data Source: L1B Description: The number of the NOSE end block along the track. Archived Metadata: - Metadata Name: LongName Mandatory: T Data Type: VA80 Number of Values: 1 Range or Valids: > Valid is "OMI/Aura Nitrogen Dioxide (NO2) Total & Troposph.Column 1-Orbit L2 Swath 13x24km". Data Source: MCF Description: > Actual is "OMI/Aura Total Column and Tropospheric Column Nitrogen Dioxide 1-Orbit L2 Swath 13x24km". (see Section 7.0 of Reference 2). - Metadata Name: ESDTDescriptorRevision Mandatory: T Data Type: VA20 Number of Values: 1 Range or Valids: Range is "0.0.0" to "9.9.99". Data Source: MCF Description: > The version of the ESDT descriptor file as determined by ECS. Actual is "0.9.30" References: > 1. "OMI Algorithm Theoretical Basis Document, Volume IV, OMI Trace Gas Algorithms " (OMI-ATBD-VOL4, ATBD-OMI-02, Version 2.0, August 2002) 2. "HDF-EOS Aura File Format Guidelines" (OMI-AURA-DATA-GUIDE, Version 1.3, 5 August 2003) 3. "OMI Science Software Delivery Guide for Version 0.9" (OMI-SSDG-0.9.8, Version 0.9.8, 14 August 2003) 4. "OMI GDPS Input/Output Data Specification (IODS) Volume 2" (OMI-GDPS-IODS-2, SD-OMIE-7200-DS-467, 9 April 2003) 5. "Release 6A Implementation Earth Science Data Model for the ECS Project" (420-TP-022-002, June 2001) (http://edhs1.gsfc.nasa.gov/waisdata/rel6/html/tp4202202.html and http://edhs1.gsfc.nasa.gov/waisdata/rel6/html/tp42022_adds.html) 6. "OMI L2 - L4 Metadata Reference Guide" (3 July 2002) (https://omiwww.gsfc.nasa.gov/mlinda/OMImetadataRefGuide.html) 7. " OMI Level 2 NO2 Data Product Specification " (SD-OMIE-KNMI-352, Issue 1.1, Draft) (January 2004) 8. "Near Real-Time SSM/I EASE-Grid Daily Global Ice Concentration and Snow Extent" (March 2002) (http://nsidc.org/data/docs/daac/nise1_nise.gd.html)