Attributes { HDFEOS { } HDFEOS_ADDITIONAL { } HDFEOS_ADDITIONAL_FILE_ATTRIBUTES { String lead_scientist "Lok Lamsal, Nickolay Krotkov"; Int32 OPF_limitsLatitudeLower -90; Float32 OPF_temperatureNO2Fit 220.0000000; String EquatorCrossingDate "2008-07-20"; String RangeEndingDate "2008-07-20"; Float32 OPF_limitsEarthRadiusUpper 1.000000020e+20; Float32 OPF_nStdUpperThreshforVcd 0.000000000; Float32 OPF_NO2FittingWindowLowerWavelength 402.0000000; Float32 OPF_pressureTropopause 120.0000000; Float32 OPF_NO2FittingWindowUpperWavelength 465.0000000; Float32 OPF_amfAngleUpperLimit 88.00000000; Float32 OPF_nStdLowerLimitForSmooth -20.00000000; Int32 OPF_nLon 360; Int32 OPF_limitsLatitudehRadiusUpper 90; Int32 GranuleYear 2008; String OML1BRVG_Input_Filename_ "OMI-Aura_L1-OML1BRVG_2008m0720t2016-o021357_v0401-2022m0618t1550.nc"; String PGE_developers "Bradford Fisher, Edward Celarier"; Float32 OPF_temperatureH2OFit 280.0000000; Int32 OPF_nLat 180; String InstrumentName "OMI"; Int32 OPF_cloudReflectivity 800; String AuthorAffiliation "NASA Goddard Space Flight Center"; Float32 OPF_latStart -90.00000000; String OMNO2_L2A_Auxiliary_Input_Filename_ "OMI-Aura_L2A-OMNO2_2008m0720t203831-o021357_v004-2022m1217t135546.nc"; String OMNO2SCD_Input_Filename_ "OMI-Aura_L2-OMNO2SCDDes_2008m0720t201625-o021357_v134-2025m0813t171059.nc"; Float32 OPF_latEnd 90.00000000; Int32 GranuleDay 20; String LongName "Nitrogen Dioxide Column Density 1-Orbit L2 Swath 12 km x 24 km"; Int32 OPF_xTrackAnomalyCorrection 1; Float32 OPF_latBandStdClamp 5.000000019e+13; Float64 TAI93At0zOfGranule 490665606.00000000; String RangeEndingTime "21:33:17"; Float32 OPF_limitsEarthRadiusLower 0.000000000; Int32 OPF_nUnpolFldCoefs 5; String ProcessingCenter "ACPS"; String AssociatedPlatformShortname "Aura"; String AuthorName "Lok Lamsal, Bradford Fisher, Edward Celarier, Eric Bucsela, Otto Solin"; Float32 OPF_lonEnd 180.0000000; String HDFVersion "HDFEOS_5.1.15"; String IdentifierProductDOI "10.5067/AURA/OMI/DATA2417"; Float32 Orbit_Period 3300.000000; Float32 OPF_temperatureCHOCHOFit 296.0000000; Float32 OPF_nStdUpperLimitForSmooth 2.000000000; Float32 OPF_nStdLowerThreshforVcd 0.000000000; Int32 Orbit 21357; String EquatorCrossingTime "20:58:55"; String ShortName "OMNO2"; String DayNightFlag "Day"; String GMINO2PROF_Auxiliary_Input_ "OMI-Aura_L3-GMINO2PROF_2008m0720t0000_v001-2020m0522t000000.h5"; Int32 NumTimes 1644; String RangeBeginningTime "20:38:31"; Int32 GranuleMonth 7; Float32 OPF_latBandWidth 9.000000000; String OMPIXCOR_Auxiliary_Input_Filename_ "OMI-Aura_L2-OMPIXCOR_2008m0720t2016-o021357_v004-2022m0909t140805.nc"; String OMNO2_L2B_Input_Filename_ "OMI-Aura_L2B-OMNO2_2008m0720t2016-o021357_v004-2025m0728t210922.he5"; Float32 OPF_maxVcdForLatBand 1.000000027e+16; String ProcessingLevel "2"; Float32 OPF_lonStart -180.0000000; String RangeBeginningDate "2008-07-20"; Float32 OPF_minVcdForLatBand 9.999999828e+12; String OMCDO2_Auxiliary_Input "OMI-Aura_L2-OMCDO2N_2008m0720t2016-o021357_v004-2025m0626t104108.he5"; String LocalGranuleID "OMI-Aura_L2-OMNO2_XXXXmXXXX_vXXX-XXXXmXXXXtXXXXXX.he5"; Float32 EquatorCrossingLongitude -108.0000000; String algorithm_developers "Lok Lamsal, Edward Celarier, Eric Bucsela, Bradford Fisher"; String fullnamepath "/HDFEOS/ADDITIONAL/FILE_ATTRIBUTES"; } HDFEOS_SWATHS { } HDFEOS_SWATHS_ColumnAmountNO2 { String VerticalCoordinate "Total Column "; Int32 NumTimes 1644; Int32 NumSWLevels 35; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2"; } HDFEOS_SWATHS_ColumnAmountNO2_Data_Fields { } HDFEOS_SWATHS_ColumnAmountNO2_Geolocation_Fields { } HDFEOS_INFORMATION { String HDFEOSVersion "HDFEOS_5.1.16"; String fullnamepath "/HDFEOS INFORMATION"; } AMFQualityFlags { UInt16 _FillValue 65535; String title "AMF App quality flags"; String units "NoUnits"; String UniqueFieldDefinition "OMI-specific"; String origname "AMFQualityFlags"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AMFQualityFlags"; String coordinates "Latitude Longitude"; } AlgorithmFlags { UInt16 _FillValue 65535; String title "Algorithm flags"; String UniqueFieldDefinition "OMI-specific"; String units "NoUnits"; String origname "AlgorithmFlags"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AlgorithmFlags"; String coordinates "Latitude Longitude"; } AmfStrat { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Stratospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfStrat"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfStrat"; String coordinates "Latitude Longitude"; } AmfStratClear { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Clear-sky stratospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfStratClear"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfStratClear"; String coordinates "Latitude Longitude"; } AmfStratCloudy { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Cloudy-sky stratospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfStratCloudy"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfStratCloudy"; String coordinates "Latitude Longitude"; } AmfStratStd { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Uncertainty of stratospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfStratStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfStratStd"; String coordinates "Latitude Longitude"; } AmfTrop { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Tropospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfTrop"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfTrop"; String coordinates "Latitude Longitude"; } AmfTropClear { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Clear-sky tropospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfTropClear"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfTropClear"; String coordinates "Latitude Longitude"; } AmfTropCloudy { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Cloudy-sky tropospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfTropCloudy"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfTropCloudy"; String coordinates "Latitude Longitude"; } AmfTropStd { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Uncertainty of tropospheric air mass factor"; String units "1"; String UniqueFieldDefinition "OMI-specific"; String origname "AmfTropStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/AmfTropStd"; String coordinates "Latitude Longitude"; } CloudFraction { Int16 _FillValue -32767; Int16 missing_value -32767; Float32 scale_factor 0.001000000047; Float32 add_offset 0.000000000; String title "Effective cloud fraction"; String units "NoUnits"; String UniqueFieldDefinition "OMI-specific"; String origname "CloudFraction"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/CloudFraction"; String coordinates "Latitude Longitude"; } CloudFractionStd { Int16 _FillValue -32767; Int16 missing_value -32767; String units "NoUnits"; Float32 add_offset 0.000000000; String title "Uncertainty of effective cloud fraction"; Float32 scale_factor 0.001000000047; String UniqueFieldDefinition "OMI-specific"; String origname "CloudFractionStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/CloudFractionStd"; String coordinates "Latitude Longitude"; } CloudPressure { Int16 _FillValue -32767; Int16 missing_value -32767; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Cloud optical centroid pressure"; String units "hPa"; String UniqueFieldDefinition "OMI-specific"; String origname "CloudPressure"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/CloudPressure"; String coordinates "Latitude Longitude"; } CloudPressureStd { Int16 _FillValue -32767; Int16 missing_value -32767; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Uncertainty of cloud optical centroid pressure"; String units "hPa"; String UniqueFieldDefinition "OMI-specific"; String origname "CloudPressureStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/CloudPressureStd"; String coordinates "Latitude Longitude"; } CloudRadianceFraction { Int16 _FillValue -32767; Int16 missing_value -32767; Float32 scale_factor 0.001000000047; Float32 add_offset 0.000000000; String title "Radiative cloud fraction at 440 nm"; String units "NoUnits"; String UniqueFieldDefinition "OMI-specific"; String origname "CloudRadianceFraction"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/CloudRadianceFraction"; String coordinates "Latitude Longitude"; } ColumnAmountNO2 { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Column Amount NO2"; String UniqueFieldDefinition "OMI-specific"; String units "molecules/cm^2"; String origname "ColumnAmountNO2"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ColumnAmountNO2"; String coordinates "Latitude Longitude"; } ColumnAmountNO2Std { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Column amount NO2 standard deviation"; String UniqueFieldDefinition "OMI-specific"; String units "molecules/cm^2"; String origname "ColumnAmountNO2Std"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ColumnAmountNO2Std"; String coordinates "Latitude Longitude"; } ColumnAmountNO2Strat { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Stratospheric column amount NO2"; String UniqueFieldDefinition "OMI-specific"; String units "molecules/cm^2"; String origname "ColumnAmountNO2Strat"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ColumnAmountNO2Strat"; String coordinates "Latitude Longitude"; } ColumnAmountNO2StratStd { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Stratospheric column amount NO2 standard deviation"; String UniqueFieldDefinition "OMI-specific"; String units "molecules/cm^2"; String origname "ColumnAmountNO2StratStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ColumnAmountNO2StratStd"; String coordinates "Latitude Longitude"; } ColumnAmountNO2Trop { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Tropospheric column amount NO2"; String UniqueFieldDefinition "OMI-specific"; String units "molecules/cm^2"; String origname "ColumnAmountNO2Trop"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ColumnAmountNO2Trop"; String coordinates "Latitude Longitude"; } ColumnAmountNO2TropStd { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Tropospheric column amount NO2 standard deviation"; String UniqueFieldDefinition "OMI-specific"; String units "molecules/cm^2"; String origname "ColumnAmountNO2TropStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ColumnAmountNO2TropStd"; String coordinates "Latitude Longitude"; } MeasurementQualityFlags { Byte _FillValue 255; Byte missing_value 255; Byte scale_factor 1; Byte add_offset 0; String title "OMI measurement quality flags"; String units "NoUnits"; String UniqueFieldDefinition "OMI-specific"; String origname "MeasurementQualityFlags"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/MeasurementQualityFlags"; } ScatteringWeight { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; String title "Scattering weight profile"; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String units "NoUnits"; String UniqueFieldDefinition "OMI-specific"; String origname "ScatteringWeight"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ScatteringWeight"; String coordinates "Latitude Longitude nPresLevels"; } ScatteringWtPressure { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Pressures for scattering weight profile"; String units "hPa"; String UniqueFieldDefinition "OMI-specific"; String origname "ScatteringWtPressure"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ScatteringWtPressure"; String coordinates "nPresLevels"; } ScdApStrat { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "A priori stratospheric slant column density of nitrogen dioxide"; String units "molecules/cm^2"; String UniqueFieldDefinition "OMI-specific"; String origname "ScdApStrat"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ScdApStrat"; String coordinates "Latitude Longitude"; } ScdApTrop { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "A priori tropospheric slant column density of nitrogen dioxide"; String units "molecules/cm^2"; String UniqueFieldDefinition "OMI-specific"; String origname "ScdApTrop"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ScdApTrop"; String coordinates "Latitude Longitude"; } SceneLER { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Lambertian equivalent reflectivity for the scene (clear and clou"; String units "NoUnits"; String UniqueFieldDefinition "OMI-specific"; String origname "SceneLER"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SceneLER"; String coordinates "Latitude Longitude"; } ScenePressure { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Retrieved scene pressure"; String units "hPa"; String UniqueFieldDefinition "OMI-specific"; String origname "ScenePressure"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/ScenePressure"; String coordinates "Latitude Longitude"; } SlantColumnAmountCHOCHO { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; String title "Slant column amount CHOCHO"; String UniqueFieldDefinition "OMI-Specific"; String units "molecules/cm^2"; String origname "SlantColumnAmountCHOCHO"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SlantColumnAmountCHOCHO"; String coordinates "Latitude Longitude"; } SlantColumnAmountCHOCHOStd { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; String title "Slant column amount CHOCHO standard deviation"; String UniqueFieldDefinition "OMI-Specific"; String units "molecules/cm^2"; String origname "SlantColumnAmountCHOCHOStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SlantColumnAmountCHOCHOStd"; String coordinates "Latitude Longitude"; } SlantColumnAmountH2O { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; String title "Slant column amount H2O"; String UniqueFieldDefinition "OMI-Specific"; String units "molecules/cm^2"; String origname "SlantColumnAmountH2O"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SlantColumnAmountH2O"; String coordinates "Latitude Longitude"; } SlantColumnAmountH2OStd { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; String title "Slant column amount H2O standard deviation"; String UniqueFieldDefinition "OMI-Specific"; String units "molecules/cm^2"; String origname "SlantColumnAmountH2OStd"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SlantColumnAmountH2OStd"; String coordinates "Latitude Longitude"; } SlantColumnAmountNO2 { Float32 missing_value -1.267650600e+30; String title "Slant Column amount NO2"; String UniqueFieldDefinition "OMI-Specific"; String units "molecules/cm^2"; Float32 _FillValue -1.267650600e+30; String origname "SlantColumnAmountNO2"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SlantColumnAmountNO2"; String coordinates "Latitude Longitude"; } SlantColumnAmountNO2Destriped { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Slant column amount NO2 destriped"; String UniqueFieldDefinition "OMI-specific"; String units "molecules/cm^2"; String origname "SlantColumnAmountNO2Destriped"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SlantColumnAmountNO2Destriped"; String coordinates "Latitude Longitude"; } SlantColumnAmountNO2Std { Float32 _FillValue -1.267650600e+30; String units "molecules/cm^2"; Float32 missing_value -1.267650600e+30; String title "Slant column amount NO2 standard deviation"; String UniqueFieldDefinition "OMI-Specific"; String origname "SlantColumnAmountNO2Std"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/SlantColumnAmountNO2Std"; String coordinates "Latitude Longitude"; } TerrainHeight { Int16 _FillValue -32767; Int16 missing_value -32767; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Average terrain height over the pixel (DEM)"; String units "m"; String UniqueFieldDefinition "OMI-specific"; String origname "TerrainHeight"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/TerrainHeight"; String coordinates "Latitude Longitude"; } TerrainPressure { Int16 _FillValue -32767; Int16 missing_value -32767; Float32 scale_factor 1.000000000; String units "hPa"; Float32 add_offset 0.000000000; String title "Average terrain pressure over the pixel"; String UniqueFieldDefinition "OMI-specific"; String origname "TerrainPressure"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/TerrainPressure"; String coordinates "Latitude Longitude"; } TerrainReflectivity { Int16 _FillValue -32767; Int16 missing_value -32767; Float32 scale_factor 0.001000000047; Float32 add_offset 0.000000000; String title "Terrain reflectivity over the pixel (GLER440)"; String units "NoUnits"; String UniqueFieldDefinition "OMI-specific"; String origname "TerrainReflectivity"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/TerrainReflectivity"; String coordinates "Latitude Longitude"; } TropopausePressure { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Pressure of the tropopause"; String units "hPa"; String UniqueFieldDefinition "OMI-specific"; String origname "TropopausePressure"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/TropopausePressure"; String coordinates "Latitude Longitude"; } VcdApBelowCloud { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "A priori below-cloud vertical column density of nitrogen dioxide"; String units "molecules/cm^2"; String UniqueFieldDefinition "OMI-specific"; String origname "VcdApBelowCloud"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/VcdApBelowCloud"; String coordinates "Latitude Longitude"; } VcdApStrat { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "A priori stratospheric vertical column density of nitrogen dioxide"; String units "molecules/cm^2"; String UniqueFieldDefinition "OMI-specific"; String origname "VcdApStrat"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/VcdApStrat"; String coordinates "Latitude Longitude"; } VcdApTrop { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "A priori tropospheric vertical column density of nitrogen dioxide"; String units "molecules/cm^2"; String UniqueFieldDefinition "OMI-specific"; String origname "VcdApTrop"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/VcdApTrop"; String coordinates "Latitude Longitude"; } VcdQualityFlags { UInt16 _FillValue 65535; String title "VCD quality flags"; String UniqueFieldDefinition "OMI-specific"; String units "NoUnits"; String origname "VcdQualityFlags"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/VcdQualityFlags"; String coordinates "Latitude Longitude"; } XTrackQualityFlags { Byte _FillValue 255; String title "X-track quality flags"; String UniqueFieldDefinition "OMI-Specific"; String units "NoUnits"; String origname "XTrackQualityFlags"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/XTrackQualityFlags"; String coordinates "Latitude Longitude"; } XTrackQualityFlagsModified { Byte _FillValue 255; String title "X-track quality flags modified"; String UniqueFieldDefinition "OMI-Specific"; String units "NoUnits"; String origname "XTrackQualityFlagsModified"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Data Fields/XTrackQualityFlagsModified"; String coordinates "Latitude Longitude"; } FoV75Area { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Area of field of view at 75% power"; String UniqueFieldDefinition "OMI-specific"; String units "km^2"; String origname "FoV75Area"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/FoV75Area"; } FoV75CornerLatitude { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Latitude corners"; String UniqueFieldDefinition "OMI-specific"; String units "degrees_north"; String origname "FoV75CornerLatitude"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/FoV75CornerLatitude"; String coordinates "Latitude Longitude nCorners"; } FoV75CornerLongitude { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Longitude corners"; String UniqueFieldDefinition "OMI-specific"; String units "degrees_east"; String origname "FoV75CornerLongitude"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/FoV75CornerLongitude"; String coordinates "Latitude Longitude nCorners"; } OrbitPhase { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Orbit Phase"; String UniqueFieldDefinition "OMI-specific"; String units "NoUnits"; String origname "OrbitPhase"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/OrbitPhase"; } SolarAzimuthAngle { Float32 _FillValue -1.267650600e+30; String units "degrees_north"; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Solar azimuth angle"; String UniqueFieldDefinition "OMI-specific"; String origname "SolarAzimuthAngle"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/SolarAzimuthAngle"; String coordinates "Latitude Longitude"; } SolarZenithAngle { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Solar zenith angle"; String UniqueFieldDefinition "OMI-specific"; String units "degrees_north"; String origname "SolarZenithAngle"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/SolarZenithAngle"; String coordinates "Latitude Longitude"; } SpacecraftAltitude { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Spacecraft altitude"; String UniqueFieldDefinition "OMI-specific"; String units "m"; String origname "SpacecraftAltitude"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/SpacecraftAltitude"; } SpacecraftLatitude { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Spacecraft latitude"; String UniqueFieldDefinition "OMI-specific"; String units "degrees_north"; String origname "SpacecraftLatitude"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/SpacecraftLatitude"; } SpacecraftLongitude { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Spacecraft longitude"; String UniqueFieldDefinition "OMI-specific"; String units "degrees_east"; String origname "SpacecraftLongitude"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/SpacecraftLongitude"; } Time { Float64 _FillValue -1.2676506002282294e+30; Float64 Missing_Value -1.2676506002282294e+30; Float64 scale_factor 1.0000000000000000; Float64 add_offset 0.0000000000000000; String title "Time (TAI93)"; String UniqueFieldDefinition "OMI-specific"; String units "s"; String origname "Time"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/Time"; } ViewingAzimuthAngle { Float32 _FillValue -1.267650600e+30; String units "degrees_north"; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Viewing azimuth angle"; String UniqueFieldDefinition "OMI-specific"; String origname "ViewingAzimuthAngle"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/ViewingAzimuthAngle"; String coordinates "Latitude Longitude"; } ViewingZenithAngle { Float32 _FillValue -1.267650600e+30; String units "degrees_north"; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Viewing zenith angle"; String UniqueFieldDefinition "OMI-specific"; String origname "ViewingZenithAngle"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/ViewingZenithAngle"; String coordinates "Latitude Longitude"; } deltaTime { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Time of day relative to midnight UTC"; String UniqueFieldDefinition "OMI-specific"; String units "s"; String origname "deltaTime"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/deltaTime"; } ArchivedMetadata_0 { String origname "ArchivedMetadata.0"; String fullnamepath "/HDFEOS INFORMATION/ArchivedMetadata.0"; } CoreMetadata_0 { String origname "CoreMetadata.0"; String fullnamepath "/HDFEOS INFORMATION/CoreMetadata.0"; } StructMetadata_0 { String origname "StructMetadata.0"; String fullnamepath "/HDFEOS INFORMATION/StructMetadata.0"; } Latitude { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Latitude"; String UniqueFieldDefinition "OMI-specific"; String units "degrees_north"; String origname "Latitude"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/Latitude"; } Longitude { Float32 _FillValue -1.267650600e+30; Float32 missing_value -1.267650600e+30; Float32 scale_factor 1.000000000; Float32 add_offset 0.000000000; String title "Longitude"; String UniqueFieldDefinition "OMI-specific"; String units "degrees_east"; String origname "Longitude"; String fullnamepath "/HDFEOS/SWATHS/ColumnAmountNO2/Geolocation Fields/Longitude"; } nCorners { String units "level"; } nPresLevels { String units "level"; } CoreMetadata { INVENTORYMETADATA { String GROUPTYPE "MASTERGROUP"; ECSDATAGRANULE { LOCALGRANULEID { Int32 NUM_VAL 1; String VALUE "\"OMI-Aura_L2-OMNO2_2008m0720t2038-o021357_v004-2025m0913t024408.he5\""; } PRODUCTIONDATETIME { Int32 NUM_VAL 1; String VALUE "\"2025-09-13T02:44:08.000Z\""; } DAYNIGHTFLAG { Int32 NUM_VAL 1; String VALUE "\"Day\""; } REPROCESSINGACTUAL { Int32 NUM_VAL 1; String VALUE "\"processed 1 time\""; } LOCALVERSIONID { Int32 NUM_VAL 1; String VALUE "\"RFC1321 MD5 = not yet calculated\""; } REPROCESSINGPLANNED { Int32 NUM_VAL 1; String VALUE "\"further update is anticipated\""; } } MEASUREDPARAMETER { MEASUREDPARAMETERCONTAINER { String CLASS "\"1\""; QAFLAGS { String CLASS "\"1\""; SCIENCEQUALITYFLAG { Int32 NUM_VAL 1; String VALUE "\"Not Investigated\""; String CLASS "\"1\""; } AUTOMATICQUALITYFLAGEXPLANATION { Int32 NUM_VAL 1; String CLASS "\"1\""; String VALUE "\"The value is based on a combination of the RadianceScienceQualityFlag, IrradianceScienceQualityFlag, QAPctRadianceError, QAPctFitError, QAPctCloudFractionMissing, QAPctCloudPressureMissing. Thresholds used: 50% for Failed and 20% for Suspect.\""; } AUTOMATICQUALITYFLAG { Int32 NUM_VAL 1; String CLASS "\"1\""; String VALUE "\"Passed\""; } OPERATIONALQUALITYFLAGEXPLANATION { Int32 NUM_VAL 1; String VALUE "\"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.\""; String CLASS "\"1\""; } OPERATIONALQUALITYFLAG { Int32 NUM_VAL 1; String VALUE "\"Passed\""; String CLASS "\"1\""; } SCIENCEQUALITYFLAGEXPLANATION { Int32 NUM_VAL 1; String VALUE "\"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 into every granule during production.\""; String CLASS "\"1\""; } } QASTATS { String CLASS "\"1\""; QAPERCENTMISSINGDATA { Int32 NUM_VAL 1; String CLASS "\"1\""; Int32 VALUE -1; } QAPERCENTOUTOFBOUNDSDATA { Int32 NUM_VAL 1; String CLASS "\"1\""; Int32 VALUE -1; } } PARAMETERNAME { String CLASS "\"1\""; Int32 NUM_VAL 1; String VALUE "\"Nitrogen_Dioxide_Total_and_Trop_Column\""; } } } ORBITCALCULATEDSPATIALDOMAIN { ORBITCALCULATEDSPATIALDOMAINCONTAINER { String CLASS "\"1\""; EQUATORCROSSINGDATE { String CLASS "\"1\""; Int32 NUM_VAL 1; String VALUE "\"2008-07-20\""; } EQUATORCROSSINGTIME { String CLASS "\"1\""; Int32 NUM_VAL 1; String VALUE "\"20:58:55.000000\""; } ORBITNUMBER { String CLASS "\"1\""; Int32 NUM_VAL 1; Int32 VALUE 21357; } EQUATORCROSSINGLONGITUDE { String CLASS "\"1\""; Int32 NUM_VAL 1; Float64 VALUE -108.0; } } } COLLECTIONDESCRIPTIONCLASS { VERSIONID { Int32 NUM_VAL 1; Float64 VALUE 4; } SHORTNAME { Int32 NUM_VAL 1; String VALUE "\"OMNO2\""; } } INPUTGRANULE { INPUTPOINTER { Int32 NUM_VAL 42; String VALUE "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t201625-o021357_v134-2025m0813t171059.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0720t2016-o021357_v004-2025m0728t210922.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t233411-o021359_v134-2025m0813t171056.nc\"", "\" ./OMI-Aura_L2B-OMNO2_2008m0720t2334-o021359_v004-2025m0728t210920.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t215518-o021358_v134-2025m0813t171054.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0720t2155-o021358_v004-2025m0728t210920.he5\"", "\" ./OMI-Aura_L2-OMNO2SCDDes_2008m0720t201625-o021357_v134-2025m0813t171059.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0720t2016-o021357_v004-2025m0728t210922.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t183732-o021356_v134-2025m0813t171103.nc\"", "\" ./OMI-Aura_L2B-OMNO2_2008m0720t1837-o021356_v004-2025m0728t210911.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t165839-o021355_v134-2025m0813t171053.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0720t1658-o021355_v004-2025m0728t210531.he5\"", "\" ./OMI-Aura_L2-OMNO2SCDDes_2008m0720t151946-o021354_v134-2025m0813t171105.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0720t1519-o021354_v004-2025m0728t210520.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t134053-o021353_v134-2025m0813t170608.nc\"", "\" ./OMI-Aura_L2B-OMNO2_2008m0720t1340-o021353_v004-2025m0728t210530.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t120200-o021352_v134-2025m0813t170602.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0720t1202-o021352_v004-2025m0728t210535.he5\"", "\" ./OMI-Aura_L2-OMNO2SCDDes_2008m0720t084414-o021350_v134-2025m0813t170603.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0720t0844-o021350_v004-2025m0728t210537.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0720t102307-o021351_v134-2025m0813t170601.nc\"", "\" ./OMI-Aura_L2B-OMNO2_2008m0720t1023-o021351_v004-2025m0728t210531.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0721t011303-o021360_v134-2025m0813t171059.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0721t0113-o021360_v004-2025m0728t210939.he5\"", "\" ./OMI-Aura_L2-OMNO2SCDDes_2008m0721t025156-o021361_v134-2025m0813t171055.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0721t0251-o021361_v004-2025m0728t210941.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0721t043049-o021362_v134-2025m0813t171101.nc\"", "\" ./OMI-Aura_L2B-OMNO2_2008m0721t0430-o021362_v004-2025m0728t210930.he5\"", "\"./OMI-Aura_L2-OMNO2SCDDes_2008m0721t060942-o021363_v134-2025m0813t171103.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0721t0609-o021363_v004-2025m0728t210941.he5\"", "\" ./OMI-Aura_L2-OMNO2SCDDes_2008m0721t074835-o021364_v134-2025m0813t171123.nc\"", "\"./OMI-Aura_L2B-OMNO2_2008m0721t0748-o021364_v004-2025m0728t210929.he5\"", "\"\"", "\"\"", "\"\"", "\"\"", "\"\"", "\"\"", "\"\"", "\"\"", "\"\"", "\"\""; } } RANGEDATETIME { RANGEENDINGDATE { Int32 NUM_VAL 1; String VALUE "\"2008-07-20\""; } RANGEENDINGTIME { Int32 NUM_VAL 1; String VALUE "\"21:33:17.000000\""; } RANGEBEGINNINGDATE { Int32 NUM_VAL 1; String VALUE "\"2008-07-20\""; } RANGEBEGINNINGTIME { Int32 NUM_VAL 1; String VALUE "\"20:38:31.000000\""; } } PGEVERSIONCLASS { PGEVERSION { Int32 NUM_VAL 1; String VALUE "\"2.2.0.0\""; } } ASSOCIATEDPLATFORMINSTRUMENTSENSOR { ASSOCIATEDPLATFORMINSTRUMENTSENSORCONTAINER { String CLASS "\"1\""; ASSOCIATEDSENSORSHORTNAME { String CLASS "\"1\""; Int32 NUM_VAL 1; String VALUE "\"CCD Visible\""; } ASSOCIATEDPLATFORMSHORTNAME { String CLASS "\"1\""; Int32 NUM_VAL 1; String VALUE "\"Aura\""; } OPERATIONMODE { String CLASS "\"1\""; Int32 NUM_VAL 1; String VALUE "\"Test\""; } ASSOCIATEDINSTRUMENTSHORTNAME { String CLASS "\"1\""; Int32 NUM_VAL 1; String VALUE "\"OMI\""; } } } ADDITIONALATTRIBUTES { ADDITIONALATTRIBUTESCONTAINER { String CLASS "\"1\"", "\"2\"", "\"3\"", "\"4\"", "\"5\"", "\"6\"", "\"7\"", "\"8\"", "\"9\"", "\"10\"", "\"11\"", "\"12\"", "\"13\"", "\"14\""; ADDITIONALATTRIBUTENAME { String CLASS "\"1\"", "\"2\"", "\"3\"", "\"4\"", "\"5\"", "\"6\"", "\"7\"", "\"8\"", "\"9\"", "\"10\"", "\"11\"", "\"12\"", "\"13\"", "\"14\""; Int32 NUM_VAL 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1; String VALUE "\"NrMeasurements\"", "\"NrZoom\"", "\"NrSpatialZoom\"", "\"NrSpectralZoom\"", "\"ExpeditedData\"", "\"SouthAtlanticAnomalyCrossing\"", "\"SpacecraftManeuverFlag\"", "\"SolarEclipse\"", "\"InstrumentConfigurationIDs\"", "\"MasterClockPeriods\"", "\"ExposureTimes\"", "\"PathNr\"", "\"StartBlockNr\"", "\"EndBlockNr\""; } INFORMATIONCONTENT { String CLASS "\"1\"", "\"2\"", "\"3\"", "\"4\"", "\"5\"", "\"6\"", "\"7\"", "\"8\"", "\"9\"", "\"10\"", "\"11\"", "\"12\"", "\"13\"", "\"14\""; PARAMETERVALUE { Int32 NUM_VAL 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1; String CLASS "\"1\"", "\"2\"", "\"3\"", "\"4\"", "\"5\"", "\"6\"", "\"7\"", "\"8\"", "\"9\"", "\"10\"", "\"11\"", "\"12\"", "\"13\"", "\"14\""; String VALUE "\"1644\"", "\"0\"", "\"0\"", "\"0\"", "\"FALSE\"", "\"TRUE\"", "\"FALSE\"", "\"FALSE\"", "\"0\"", "\"1\"", "\"2\"", "\"2.000400\"", "\"1.000200\"", "\"0.500100\"", "\"0.400080\"", "\"\"", "\"\"", "\"\""; } } } } } } ArchiveMetadata { ARCHIVEDMETADATA { String GROUPTYPE "MASTERGROUP"; LONGNAME { Int32 NUM_VAL 1; String VALUE "\"OMI/Aura Nitrogen Dioxide (NO2) Total & Troposph.Column 1-Orbit L2 Swath 13x24km\""; } ESDTDESCRIPTORREVISION { Int32 NUM_VAL 1; String VALUE "\"1.1.12\""; } } } }