http://dx.doi.org/ 10.5067/46J4Z696YA09 6 Number of ancillary input files. /Dimensions/AncFile 3 x, y, z. /Dimensions/EuclidDim 8889 Index of frame in granule. /Dimensions/Frame 1 Number of gaps. /Dimensions/Gap 4 Number of primary input files. /Dimensions/InputPtr 72 Meteorology vertical Level /Dimensions/MetLevel 2 Attitude and ephemeris files. /Dimensions/OrbitParamPtr 8 Index of downlinked sounding in granule. /Dimensions/Sounding 8 Position of the soundings. /Dimensions/SoundingPosition 3 Spectrum index (O2, weak CO2, strong CO2). /Dimensions/Spectrum 1 AncFile /Shapes/AncFile_Array 1 Frame /Shapes/Frame_Array 2 Frame EuclidDim /Shapes/Frame_EuclidDim_Array 2 Frame Sounding /Shapes/Frame_Sounding_Array 3 Frame Sounding MetLevel /Shapes/Frame_Sounding_MetLevel_Array 3 Frame Sounding Spectrum /Shapes/Frame_Sounding_Spectrum_Array 1 Gap /Shapes/Gap_Array 1 InputPtr /Shapes/InputPtr_Array 1 MetLevel /Shapes/MetLevel_Array 1 OrbitParamPtr /Shapes/OrbitParamPtr_Array 0 /Shapes/Scalar 1 SoundingPosition /Shapes/SoundingPosition_Array 1 Spectrum /Shapes/Spectrum_Array Frame_Sounding_MetLevel_Array Years Age (years since entry into the stratosphere) derived from the Chemical Lagrangian Model of the Stratosphere Float32 age_of_air_profile_cpr /CO2Prior/age_of_air_profile_cpr 1 3 Frame_Sounding_MetLevel_Array Flag indicating what part of the atmosphere this level was categorized as by the CO2 prior algorithm (1 = troposphere, 2 = middleworld, 3 = stratospheric overworld) Signed8 atmospheric_stratum_profile_cpr /CO2Prior/atmospheric_stratum_profile_cpr Frame_Sounding_Array \"0: Success; 1: The OCO/ACOS time string could not be parsed; 2: A problem occurred while calculating equivalent latitude; 3: A problem occurred while calculating the prior itself; 4: The quality flag in the met data was nonzero; 5: The sounding date was out of the expected range; 6: The met data for altitude was all fill values; 7: Could not find a GEOS FP-IT file bracketing the sounding time Signed8 co2_prior_processing_flag_cpr /CO2Prior/co2_prior_processing_flag_cpr Frame_Sounding_MetLevel_Array Moles Mole^{-1} CO2 profile derived from the Mauna Loa/Samoa monthly flask average record based on age from CLaMS (Chemical Lagrangian Model of the Stratosphere), and the parameterization used by TCCON (Total Carbon Column Observing Network) for the troposphere Float32 co2_prior_profile_cpr /CO2Prior/co2_prior_profile_cpr Frame_Sounding_MetLevel_Array Years Time (in years) that the Mauna Loa/Samoa CO2 record had to be extrapolated to reach the required record date Float32 co2_record_latency_profile_cpr /CO2Prior/co2_record_latency_profile_cpr Frame_Sounding_MetLevel_Array Degrees Equivalent latitude derived from potential vorticity interpolated from meteorology Float32 equivalent_latitude_profile_cpr /CO2Prior/equivalent_latitude_profile_cpr Frame_Sounding_MetLevel_Array Years The date (as decimal year, decimal part = 0-based day-of-year / 365.25) corresponding to the mean date of CO2 data from Mauna Loa/Samoa contributing to the CO2 profile at each level Float32 gas_record_date_profile_cpr /CO2Prior/gas_record_date_profile_cpr Scalar The instrument mode in which the data in the product were collected. Valid values are: 'Glint', 'Nadir', 'Target', 'Sample Dark Calibration', 'Sample Lamp Calibration', 'Sample Solar/limb Calibration', 'Single-Pixel Dark Calibration', 'Single-Pixel Lamp Calibration', 'Single-Pixel Solar/limb Calibration' VarLenStr AcquisitionMode /Metadata/AcquisitionMode Scalar Actual number of frames reported in this product Signed32 ActualFrames /Metadata/ActualFrames AncFile_Array The file names of the ancillary data files that were used to generate this product (ancillary data sets include all input files except for the primary input files) VarLenStr AncillaryDataDescriptors /Metadata/AncillaryDataDescriptors Scalar The date of the equator crossing of the spacecraft ground track in the ascending direction FixLenStr AscendingEquatorCrossingDate /Metadata/AscendingEquatorCrossingDate -180.0000000 180.0000000 Scalar Degrees The longitude of the equator crossing of the spacecraft ground track in the ascending direction Float32 AscendingEquatorCrossingLongitude /Metadata/AscendingEquatorCrossingLongitude Scalar The time of the equator crossing of the spacecraft ground track in the ascending direction FixLenStr AscendingEquatorCrossingTime /Metadata/AscendingEquatorCrossingTime Scalar The ID of build which included the software that created this product VarLenStr BuildId /Metadata/BuildId Scalar Label of the data collection containing this product VarLenStr CollectionLabel /Metadata/CollectionLabel Scalar 'NCSA HDF' - A character string that describes the internal format of the data product. FixLenStr DataFormatType /Metadata/DataFormatType Scalar The source of the spacecraft ephemeris data that were utilized to generate this data file VarLenStr EphemerisType /Metadata/EphemerisType Scalar The date of the equator crossing of the spacecraft ground track in the descending direction FixLenStr EquatorCrossingDate /Metadata/EquatorCrossingDate -180.0000000 180.0000000 Scalar Degrees The longitude of the equator crossing of the spacecraft ground track in the descending direction Float32 EquatorCrossingLongitude /Metadata/EquatorCrossingLongitude Scalar The time of the equator crossing of the spacecraft ground track in the descending direction FixLenStr EquatorCrossingTime /Metadata/EquatorCrossingTime Scalar Nominal number of frames in this product Signed32 ExpectedFrames /Metadata/ExpectedFrames Gap_Array The timestamp after which a nonexistent, unnecessary, spurious, questionable, or erroneous data segment begins FixLenStr GapStartTime /Metadata/GapStartTime Gap_Array The timestamp before which a nonexistent, unnecessary, spurious, questionable, or erroneous data segment ends FixLenStr GapStopTime /Metadata/GapStopTime Scalar The filename of this product VarLenStr GranulePointer /Metadata/GranulePointer Scalar 5.x' - A character string that identifies the version of the HDF (Hierarchical Data Format) software that was used to generate this data file VarLenStr HDFVersionId /Metadata/HDFVersionId InputPtr_Array A pointer to one or more data granules that provide the major input that was used to generate this product. VarLenStr InputPointer /Metadata/InputPointer Scalar OCO-2' - The name of the instrument that collected the telemetry data VarLenStr InstrumentShortName /Metadata/InstrumentShortName Scalar A complete descriptive name for the data type of this product VarLenStr LongName /Metadata/LongName Scalar The Nth occurrence of this particular mode for this orbit, indicated by letter ('a', 'b', 'c', 'd', etc.) FixLenStr ModeCounter /Metadata/ModeCounter Scalar The two-letter abbreviation of the AcquisitionMode: GL, ND, TG, DS, LS, SS, BS, NP, GP, TP, DP, LP, SP, BP, XS, XP, MS, MP, SB FixLenStr OperationMode /Metadata/OperationMode Scalar The eccentricity of the spacecraft orbital path Float32 OrbitEccentricity /Metadata/OrbitEccentricity 0.000000000 180.0000000 Scalar Degrees The angle between the plane of the spacecraft orbital path and the Earth equatorial plane Float32 OrbitInclination /Metadata/OrbitInclination OrbitParamPtr_Array The data files that provided the orbit parameters used to generate this product VarLenStr OrbitParametersPointer /Metadata/OrbitParametersPointer Scalar Seconds The time span between two consecutive descending node crossings Float32 OrbitPeriod /Metadata/OrbitPeriod Scalar Meters The length of the semimajor axis of the spacecraft orbit Float32 OrbitSemiMajorAxis /Metadata/OrbitSemiMajorAxis Scalar The date of the equator crossing of the spacecraft nadir track in the descending direction FixLenStr OrbitStartDate /Metadata/OrbitStartDate -180.0000000 180.0000000 Scalar Degrees The longitude of the equator crossing of the spacecraft ground track in the descending direction Float32 OrbitStartLongitude /Metadata/OrbitStartLongitude Scalar The time of the equator crossing of the spacecraft ground track in the descending direction FixLenStr OrbitStartTime /Metadata/OrbitStartTime Scalar 'Orbiting Carbon Observatory 2' VarLenStr PlatformLongName /Metadata/PlatformLongName Scalar 'OCO-2' VarLenStr PlatformShortName /Metadata/PlatformShortName Scalar 'spacecraft' - The type of platform associated with the instrument which acquires the accompanying data VarLenStr PlatformType /Metadata/PlatformType Scalar Indicates data level (Level 0, Level 1A, Level 1B, Level 2) in this product VarLenStr ProcessingLevel /Metadata/ProcessingLevel Scalar 'NASA' - Identification of the agency that provides the project funding VarLenStr ProducerAgency /Metadata/ProducerAgency Scalar 'JPL' - Identification of the institution that provides project management. VarLenStr ProducerInstitution /Metadata/ProducerInstitution Scalar The date and time at which the product was created (yyyy-mm-ddThh:mm:ss.mmmZ) FixLenStr ProductionDateTime /Metadata/ProductionDateTime Scalar Facility in which this file was produced, typically: 'Operations Pipeline', 'Operations Pipeline 2', 'Science Computing Facility', 'Test Pipeline', Test Pipeline 2' VarLenStr ProductionLocation /Metadata/ProductionLocation Scalar One-letter code indicating the ProductionLocation, typically: ' ' - Operations Pipelines (1) or 2, 's' - Science Computing Facility, 't' - Test Pipelines (1) or 2 FixLenStr ProductionLocationCode /Metadata/ProductionLocationCode Scalar OCO-2' - The project identification string VarLenStr ProjectId /Metadata/ProjectId Scalar A pointer to the quality assessment product that was generated with this product VarLenStr QAGranulePointer /Metadata/QAGranulePointer Scalar The date on which the earliest data contained in the product were acquired (yyyy-mm-dd) FixLenStr RangeBeginningDate /Metadata/RangeBeginningDate Scalar The time at which the earliest data contained in the product were acquired (hh:mm:ss.mmmZ) FixLenStr RangeBeginningTime /Metadata/RangeBeginningTime Scalar The date on which the latest data contained in the product were acquired (yyyy-mm-dd) FixLenStr RangeEndingDate /Metadata/RangeEndingDate Scalar The time at which the latest data contained in the product were acquired (hh:mm:ss.mmmZ) FixLenStr RangeEndingTime /Metadata/RangeEndingTime 0 1 SoundingPosition_Array Indicates the inclusion of each footprint in the data: 0 - not included, 1 - included Signed8 ReportedSoundings /Metadata/ReportedSoundings Scalar The name of the document describing the contents of the product VarLenStr SISName /Metadata/SISName Scalar The version of the document describing the contents of the product VarLenStr SISVersion /Metadata/SISVersion Scalar The short name identifying the data type of this product VarLenStr ShortName /Metadata/ShortName Scalar The size of this data granule in Megabytes Float32 Megabytes SizeMBECSDataGranule /Metadata/SizeMBECSDataGranule Spectrum_Array A description of the spectral channels used for the measurements VarLenStr SpectralChannel /Metadata/SpectralChannel Scalar The first orbit on which data contained in the product were acquired Signed32 StartOrbitNumber /Metadata/StartOrbitNumber 1 233 Scalar The first WRS path on which data contained in the product was collected Signed32 StartPathNumber /Metadata/StartPathNumber Scalar The last orbit on which data contained in the product were acquired Signed32 StopOrbitNumber /Metadata/StopOrbitNumber 1 233 Scalar The last WRS path on which data contained in the product was collected Signed32 StopPathNumber /Metadata/StopPathNumber Frame_Sounding_Array Pascals Interpolated from GEOS-5 FP-IT inst3_2d_asm_Nx field TROPPB (tropopause_pressure_based_on_blended_estimate) Float32 blended_tropopause_pressure_met /Meteorology/blended_tropopause_pressure_met Frame_Sounding_Array Pascals Interpolated from GEOS-5 FP-IT inst3_3d_asm_Nv field PS (surface_pressure) Float32 surface_pressure_met /Meteorology/surface_pressure_met Frame_Sounding_MetLevel_Array Pascals Model pressure values on which meterological values are reported Float32 vector_pressure_levels_met /Meteorology/vector_pressure_levels_met Frame_Sounding_Array Meters Altitude of the sounding based on Earth topography Float32 sounding_altitude /SoundingGeometry/sounding_altitude Frame_Sounding_Array Meters Uncertainty of the source Earth topography data Float32 sounding_altitude_uncert /SoundingGeometry/sounding_altitude_uncert 0.000000000 360.0000000 Frame_Sounding_Array Degrees Orientation of the surface slope relative to the local North Float32 sounding_aspect /SoundingGeometry/sounding_aspect 0.000000000 360.0000000 Frame_Sounding_Array Degrees Angle between local North and the projection of the LOS onto the Earth based on topography Float32 sounding_azimuth /SoundingGeometry/sounding_azimuth Frame_Sounding_Array Meters Distance between the ABO2 band footprint center and the WCO2 band footprint center Float32 sounding_center_offset_o2_weak_co2 /SoundingGeometry/sounding_center_offset_o2_weak_co2 Frame_Sounding_Array Meters Distance between the SCO2 band footprint center and the ABO2 band footprint center Float32 sounding_center_offset_strong_co2_o2 /SoundingGeometry/sounding_center_offset_strong_co2_o2 Frame_Sounding_Array Meters Distance between the WCO2 band footprint center and the SCO2 band footprint center Float32 sounding_center_offset_weak_co2_strong_co2 /SoundingGeometry/sounding_center_offset_weak_co2_strong_co2 0.000000000 100.0000000 Frame_Sounding_Array Percent Percentage of land surface type within the sounding Float32 sounding_land_fraction /SoundingGeometry/sounding_land_fraction 0 3 Frame_Sounding_Array Surface type at the sounding location: 0 - Land, 1 - Water, 2 - unused, 3 - Mixed land water Signed8 sounding_land_water_indicator /SoundingGeometry/sounding_land_water_indicator -90.00000000 90.00000000 Frame_Sounding_Array Degrees Geodetic latitude of the sounding based on Earth topography Float32 sounding_latitude /SoundingGeometry/sounding_latitude -90.00000000 90.00000000 Frame_Sounding_Array Degrees Geodetic latitude of the sounding based on standard geoid Float32 sounding_latitude_geoid /SoundingGeometry/sounding_latitude_geoid -180.0000000 180.0000000 Frame_Sounding_Array Degrees Longitude of the sounding based on Earth topography Float32 sounding_longitude /SoundingGeometry/sounding_longitude -180.0000000 180.0000000 Frame_Sounding_Array Degrees Longitude of the sounding based on standard geoid Float32 sounding_longitude_geoid /SoundingGeometry/sounding_longitude_geoid 0.000000000 180.0000000 Frame_Sounding_Array Angle between the LOS as defined from the sounding location to the spacecraft, and the sounding surface normal Float32 sounding_los_surface_bidirectional_angle /SoundingGeometry/sounding_los_surface_bidirectional_angle Frame_Sounding_Array The two-letter abbreviation of the science AcquisitionMode: GL, ND, TG, XS FixLenStr sounding_operation_mode /SoundingGeometry/sounding_operation_mode 0.000000000 100.0000000 Frame_Sounding_Array Percent Union in area of all three band footprints relative to average area of all three band footprints Float32 sounding_overlap /SoundingGeometry/sounding_overlap 0.000000000 100.0000000 Frame_Sounding_Array Percent Union in area of the footprints of band one and two relative to the average area of the two footprints Float32 sounding_overlap_o2_weak_co2 /SoundingGeometry/sounding_overlap_o2_weak_co2 0.000000000 100.0000000 Frame_Sounding_Array Percent Union in area of the footprints of band one and three relative to the average area of the two footprints Float32 sounding_overlap_strong_co2_o2 /SoundingGeometry/sounding_overlap_strong_co2_o2 0.000000000 100.0000000 Frame_Sounding_Array Percent Union in area of the footprints of band two and three relative to the average area of the two footprints Float32 sounding_overlap_weak_co2_strong_co2 /SoundingGeometry/sounding_overlap_weak_co2_strong_co2 Frame_Sounding_Array Meters Goodness-of-fit of surface slope: the standard deviation of the points, to which the plane is fitted, with the expected values taken as the orthogonal projection of the points onto the plane Float32 sounding_plane_fit_quality /SoundingGeometry/sounding_plane_fit_quality 0.000000000 360.0000000 Frame_Sounding_Array Degrees Angle between the accepted polarization axis of the instrument and the instrument reference plane for polarization, defined as the plane formed by the LOS and the ray from the sounding location to the local zenith Float32 sounding_polarization_angle /SoundingGeometry/sounding_polarization_angle Frame_Sounding_Array Meters Second^{-1} Velocity of the spacecraft along the LOS: positive indicates spacecraft moving toward sounding location Float32 sounding_relative_velocity /SoundingGeometry/sounding_relative_velocity Frame_Sounding_Array Meters Difference in slant path between ABO2 and WCO2 footprints Float32 sounding_slant_path_diff_o2_weak_co2 /SoundingGeometry/sounding_slant_path_diff_o2_weak_co2 Frame_Sounding_Array Meters Difference in slant path between SCO2 and ABO2 footprints Float32 sounding_slant_path_diff_strong_co2_o2 /SoundingGeometry/sounding_slant_path_diff_strong_co2_o2 Frame_Sounding_Array Meters Difference in slant path between WCO2 and SCO2 footprints Float32 sounding_slant_path_diff_weak_co2_strong_co2 /SoundingGeometry/sounding_slant_path_diff_weak_co2_strong_co2 0.000000000 180.0000000 Frame_Sounding_Array Degrees Slope of a plane fit to points within the sounding Float32 sounding_slope /SoundingGeometry/sounding_slope 0.000000000 360.0000000 Frame_Sounding_Array Degrees Angle between local North and the projection of the solar angle onto the Earth at the sounding location based on topography Float32 sounding_solar_azimuth /SoundingGeometry/sounding_solar_azimuth Frame_Sounding_Array Meters Distance between sounding location and the Sun Float64 sounding_solar_distance /SoundingGeometry/sounding_solar_distance Frame_Sounding_Array Meters Second^{-1} Velocity of the Sun along the sounding location/Sun vector: negative indicates Sun moving toward sounding location Float32 sounding_solar_relative_velocity /SoundingGeometry/sounding_solar_relative_velocity 0.000000000 180.0000000 Frame_Sounding_Array Angle between the solar direction as defined from the sounding location to the sun, and the sounding surface normal Float32 sounding_solar_surface_bidirectional_angle /SoundingGeometry/sounding_solar_surface_bidirectional_angle 0.000000000 180.0000000 Frame_Sounding_Array Degrees Angle between the normal to the Earth geoid and the solar angle at the sounding location based on topography Float32 sounding_solar_zenith /SoundingGeometry/sounding_solar_zenith Frame_Sounding_Array Meters Standard deviation of the altitude within the sounding Float32 sounding_surface_roughness /SoundingGeometry/sounding_surface_roughness Frame_Sounding_Array Data acquisition time for the sounding based upon the three footprint times (yyyy-mm-ddThh:mm:ss.mmmZ) FixLenStr sounding_time_string /SoundingGeometry/sounding_time_string Frame_Sounding_Array Seconds Data acquisition time for the sounding based upon the three footprint times in seconds since Jan. 1, 1993 Float64 sounding_time_tai93 /SoundingGeometry/sounding_time_tai93 0.000000000 180.0000000 Frame_Sounding_Array Degrees Angle between the normal to the Earth geoid and the LOS at the sounding location based on Earth topography Float32 sounding_zenith /SoundingGeometry/sounding_zenith Scalar The ID of the first sounding in this file Signed32 FirstSoundingId_Time /Metadata/FirstSoundingId Scalar The ID of the first sounding in this file Signed32 FirstSoundingId_Date /Metadata/FirstSoundingId Scalar The ID of the last sounding in this file Signed32 LastSoundingId_Time /Metadata/LastSoundingId Scalar The ID of the last sounding in this file Signed32 LastSoundingId_Date /Metadata/LastSoundingId Frame_Sounding_Array Unique identifier for each sounding Signed32 sounding_id_Time /SoundingGeometry/sounding_id Frame_Sounding_Array Unique identifier for each sounding Signed32 sounding_id_Date /SoundingGeometry/sounding_id