Shortname: OMAERUV
Longname: OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo 1-Orbit L2 Swath 13x24km
PFS Version: 1.1.9
Date: 2 July 2009
Author(s): Changwoo Ahn (SSAI), Ellyne Kinney(SSAI) and Omar Torres (Hampton)
PGE Version: 1.1.9
Lead Algorithm Scientist: Omar Torres(Hampton)
PGE Developer(s): >
Changwoo Ahn, Ellyne Kinney, Dev Roy and Shifang Luo (all SSAI)
Description: >
This document specifies the product format for the OMAERUV Level 2 PGE,
which uses the V8 TOMS algorithm to estimate Aerosol Single Scattering Albedo and Absorption
Optical Depth from OMI UV-2 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 5 to 500 Mb.
Global Metadata:
- Metadata Name: AuthorAffiliation
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Not applicable (free format)
Data Source: PCF
Description: Example is "Hampton University"
- Metadata Name: AuthorName
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Not applicable (free format)
Data Source: PCF
Description: Example is "Omar Torres"
- Metadata Name: GranuleDay
Mandatory: T
Data Type: HE5T_NATIVE_INT
Number of Values: 1
Range or Valids: 1 to 31
Data Source: PGE
Description: The day of the month at the start of the granule
- Metadata Name: GranuleMonth
Mandatory: T
Data Type: HE5T_NATIVE_INT
Number of Values: 1
Range or Valids: 1 to 12
Data Source: PGE
Description: 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: PGE
Description: The (four-digit) year at the start of the granule
- Metadata Name: HDFEOSVersion
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Automatically set by HDF-EOS
Data Source: HE
Description: Example is "HDFEOS_5.1.5"
- Metadata Name: InputVersions
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Not applicable (free format)
Data Source: PGE
Description: >
A list of every ESDT (including version) whose product was used as
input for the processing.
- 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: PGE
Description: Actual is "OMI" (see Section 6.1 of Reference 2)
- Metadata Name: OrbitData
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Valids are "DEFINITIVE" and "PREDICTED"
Data Source: L1B
Description: >
Indicates whether orbit data used by the L1B processor is definitive
or predicted.
- 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: PCF
Description: Example is "0.9.22" (see Appendix K of Reference 3)
- Metadata Name: ProcessLevel
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Valids are "L1b", "L2" and "L3"
Data Source: PGE
Description: Actual is "L2"
- Metadata Name: ProcessingCenter
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Not applicable (free format)
Data Source: PCF
Description: Example is "OMIDAPS"
- Metadata Name: ProcessingHost
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: Not applicable (free format)
Data Source: PCF
Description: >
The output from executing the Unix "uname -a" command on the
processing machine.
- 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: PGE
Description: >
The TAI93 time at 0z of the granule (see Section 6.1 of Reference 2).
Swath Metadata:
- Metadata Name: EarthSunDistance
Mandatory: T
Data Type: HE5T_NATIVE_FLOAT
Number of Values: 1
Range or Valids: 1.47e+11 to 1.53e+11
Data Source: L1B
Description: >
The Earth-sun distance (in m) at the time of the irradiance
measurement.
- Metadata Name: NumTimes
Mandatory: T
Data Type: HE5T_NATIVE_INT
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_INT
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: Altitude
Mandatory: T
Data Type: HE5T_NATIVE_FLOAT
Number of Values: 5
Range or Valids: 0.0 to 10.0
Data Source: PGE
Description: >
Aerosol layer altitude levels (in km) at which the PGE executes the
retrieval.
- Metadata Name: SwathName
Mandatory: T
Data Type: HE5T_NATIVE_CHAR
Number of Values: 1
Range or Valids: >
Valid is "OMI Aerosol Extinction and Absorption Optical Depth"
Data Source: PGE
Description: >
- 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: PGE
Description: >
Actual is "Altitude" (see Section 6.2 of Reference 2).
- Metadata Name: Wavelengths
Mandatory: T
Data Type: HE5T_NATIVE_FLOAT
Number of Values: 19
Range or Valids: 260.0 to 500.0
Data Source: L1B
Description: >
An array of wavelengths used for Extinction Optical Depth, Absorption
Optical Depth and Imaginary Refractive Index extraction.
Swath Dimensions:
- Dimension Name: nXtrack
Data Type: HE5T_NATIVE_INT
Dimension Type: FIXED
Number of Values: 1
Range or Valids: 1 to 60
Data Source: L1B
Description: The number of ground pixels per "scan" line
- Dimension Name: nLayers
Data Type: HE5T_NATIVE_INT
Dimension Type: FIXED
Number of Values: 1
Range or Valids: 1 to 11
Data Source: PGE
Description: >
The number of layers in the aerosol profile per ground pixel.
- Dimension Name: nTimes
Data Type: HE5T_NATIVE_INT
Dimension Type: FIXED
Number of Values: 1
Range or Valids: 0 to 9999
Data Source: L1B
Description: The number of "scan" lines in the swath
- Dimension Name: nTimesSmallPixel
Data Type: HE5T_NATIVE_INT
Dimension Type: FIXED
Number of Values: 1
Range or Valids: 0 to 9999
Data Source: L1B
Description: The number of small pixel "scan" lines in the swath
- Dimension Name: nWavel
Data Type: HE5T_NATIVE_INT
Dimension Type: FIXED
Number of Values: 1
Range or Valids: 1 to 750
Data Source: PGE
Description: The number of wavelengths per ground pixel
Geolocation Fields:
- Field Name: GroundPixelQualityFlags
Data Type: HE5T_NATIVE_UINT16
Dimensions: nXtrack,nTimes
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.)
- 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: deg
Data Source: L1B
Title: "Geodetic Latitude (deg)"
Unique Field Definition: Aura-Shared
Description: >
The geodetic latitude (in deg) 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: deg
Data Source: L1B
Title: "Geodetic Longitude (deg)"
Unique Field Definition: Aura-Shared
Description: >
The geodetic longitude (in deg) at the center of the ground pixel.
- Field Name: RelativeAzimuthAngle
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(EastofNorth)
Data Source: L1B
Title: >
"Relative (sun + 180 - view) Azimuth Angle (deg)"
Unique Field Definition: OMI-Specific
Description: >
The relative (sun + 180 - view) azimuth angle (in deg) at the center
of the ground pixel.
- Field Name: SolarZenithAngle
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nXtrack,nTimes
Range or Valids: 0.0 to 180.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: deg
Data Source: L1B
Title: "Solar Zenith Angle (deg)"
Unique Field Definition: Aura-Shared
Description: >
The solar zenith angle (in deg) at the center of the ground pixel.
- Field Name: TerrainPressure
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nXtrack,nTimes
Range or Valids: Range is 0.0 to 1013.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: mbar
Data Source: L1B
Title: "Terrain Pressure (mbar)"
Unique Field Definition: Aura-Shared
Description: >
The terrain pressure (in mbar) at the center of the ground pixel.
- Field Name: SecondsInDay
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nTimes
Range or Valids: 0.0d+00 to 86401.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: s
Data Source: L1B
Title: "Seconds in Day at Start of Scan (s)"
Unique Field Definition: Aura-Shared
Description: >
The time of day (in s) at the start of the "scan".
- Field Name: Time
Data Type: HE5T_NATIVE_DOUBLE
Dimensions: nTimes
Range or Valids: 0.0d+00 to 1.0d+10
Missing Value: -1.2676506002282294e+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: ViewingZenithAngle
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nXtrack,nTimes
Range or Valids: 0.0 to 180.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: deg
Data Source: L1B
Title: "Viewing Zenith Angle (deg)"
Unique Field Definition: OMI-Specific
Description: >
The viewing zenith angle (in deg) at the center of the ground pixel.
Data Fields:
- Field Name: FinalAerosolLayerHeight
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nXtrack,nTimes
Range or Valids: 0.0 to 10.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: km
Data Source: PGE
Title: "Final Aerosol Layer Height (km)"
Unique Field Definition: OMI-Specific
Description: >
The aerosol layer height (in km) associated with the ground pixel.
- Field Name: AerosolSingleScattAlbVsHeight
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,nLayers,nXtrack,nTimes
Range or Valids: 0.0 to 1.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Aerosol Single Scattering Albedo (SSA) at 5 heights"
Unique Field Definition: OMI-Specific
Description: >
The aerosol single scattering albedo solution associated with the ground pixel for
five (5) aerosol layer heights.
- Field Name: AerosolAbsOpticalDepthVsHeight
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,nLayers,nXtrack,nTimes
Range or Valids: 0.0 to 0.5
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Aerosol Absorption Optical Depth at 5 heights"
Unique Field Definition: OMI-Specific
Description: >
The aerosol absorption optical depth solution associated with the
ground pixel for five (5) aerosol layer heights.
- Field Name: AerosolOpticalDepthVsHeight
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,nLayers,nXtrack,nTimes
Range or Valids: 0.0 to 4.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Aerosol Optical Depth at 5 heights"
Unique Field Definition: OMI-Specific
Description: >
The aerosol optical depth solution associated with the
ground pixel for five (5) aerosol layer heights.
- Field Name: AerosolType
Data Type: HE5T_NATIVE_UINT8
Dimensions: nXtrack,nTimes
Range or Valids: Valids are 1, 2, 3, and 255
Missing Value: 255
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Aerosol Type"
Unique Field Definition: OMI-Specific
Description: >
The aerosol type associated with the ground pixel.
1 - Smoke
2 - Dust
3 - Sulfate
255 - Unknown
- Field Name: FinalAlgorithmFlags
Data Type: HE5T_NATIVE_UINT16
Dimensions: nXtrack,nTimes
Range or Valids: 0 to 8
Missing Value: 65535
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Final Algorithm Flags"
Unique Field Definition: OMI-Specific
Description: >
The final algorithm flag associated with the ground pixel:
Aerosol extinction Optical Depth (AOD), Single Scattering Albedo(SSA),
and Aerosol Absorption Optical Depth(AAOD)
Retrievals:
0 - Most reliable (AAOD, SSA, and AOD)
1 - Reliable (AAOD only)
2 - Less reliable for all products
Not Reliable/No Retrievals:
3 - Out-of-bounds Optical Depth at 500nm.
4 - Cloud/snow/ice contaminated data.
5 - Solar Zenith Angle above threshold (70 degrees).
6 - Sun glint angle below threshold over water (40 degrees).
7 - Terrain Pressure below threshold (628.7 hPa).
8 - Cross track anomaly.
- Field Name: AlgorithmFlagsVsHeight
Data Type: HE5T_NATIVE_UINT16
Dimensions: nLayer,nXtrack,nTimes
Range or Valids: 0 to 8
Missing Value: 65535
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Algorithm Flags at 5 heights"
Unique Field Definition: OMI-Specific
Description: >
The algorithm flag associated with the ground pixel for each height:
Aerosol Single Scattering Albedo(SSA) and Aerosol Absorption Optical Depth(AAOD)
Retrievals for each heihgt:
The same criteria used for the FinalAlgorithmFlags are applied for each height.
- Field Name: FinalAerosolSingleScattAlb
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,nXtrack,nTimes
Range or Valids: 0.0 to 1.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Best Aerosol Single Scattering Albedo (omega)"
Unique Field Definition: OMI-Specific
Description: >
The best aerosol single scattering albedo solution associated with the ground pixel.
- Field Name: FinalAerosolOpticalDepth
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,nXtrack,nTimes
Range or Valids: 0.0 to 4.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Best Aerosol Optical Depth "
Unique Field Definition: OMI-Specific
Description: >
The best aerosol optical depth solution associated with the
ground pixel.
- Field Name: FinalAerosolAbsOpticalDepth
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,nXtrack,nTimes
Range or Valids: 0.0 to 0.5
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Best Aerosol Absorption Optical Depth "
Unique Field Definition: OMI-Specific
Description: >
The best aerosol absorption optical depth solution associated with the
ground pixel.
- Field Name: ImaRefractiveIndex
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,nLayers,nXtrack,nTimes
Range or Valids: 0.0 to 1.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Imaginary Refractive Index"
Unique Field Definition: OMI-Specific
Description: >
The imaginary component of the refractive index solution associated with
the ground pixel.
- Field Name: MeasurementQualityFlags
Data Type: HE5T_NATIVE_UINT16
Dimensions: nTimes
Range or Valids: Not meaningful.
Missing Value: 65535
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Measurement Quality Flags"
Unique Field Definition: OMI-Specific
Description: >
Bits
0 - Test Mode
1 - Alternative Engineering Data
2 - Alternating Sequencing Readout
3 - Co-adder Error
4 - Invalid Co-addition Period
5 - Co-addition Possibility
6 - Measurement Combination
7 - Rebinning
8 - Dark Current Correction Processing Option
9 - Detector Smear Calculation Procesing Option
10 - SAA Possibility
11 - Spacecraft Maneuver
12 - Geolocation Error
13 - 15 Reserved
- Field Name: PixelQualityFlags
Data Type: HE5T_NATIVE_UINT16
Dimensions: nWavel,nXtrack,nTimes
Range or Valids: Not meaningful.
Missing Value: 65535
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "Pixel Quality Flags"
Unique Field Definition: OMI-Specific
Description: >
Bits
0 - Missing
1 - Bad Pixel
2 - Processing Error
3 - Transient Pixel Warning
4 - RTS Pixel Warning
5 - Saturation Possibility Warning
6 - Noise Calculation Warning
7 - Dark Current Warning
8 - Offset Warning
9 - Exposure Smear Warning
10 - Stray Light Warning
11 - 13 Reserved
14 - Dead Pixel Identifcation (OML1BCAL only)
15 - Dead Pixel Identifcation Error (OML1BCAL only)
- Field Name: NormRadiance
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,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: PGE
Title: "Normalized Radiance"
Unique Field Definition: OMI-Specific
Description: >
The Normalized Radiance is the Radiance / Irradiance ratio.
- Field Name: Reflectivity
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,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: PGE
Title: "Lambert Equivalent Reflectivity"
Unique Field Definition: OMI-Specific
Description: >
The Lambert equivalent reflectivity associated with the ground pixel.
- Field Name: SurfaceAlbedo
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nWavel,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: PGE
Title: "Surface Albedo"
Unique Field Definition: OMI-Specific
Description: >
The surface albedo associated with the ground pixel.
- Field Name: UVAerosolIndex
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nXtrack,nTimes
Range or Valids: Range is -10.0 to 30.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "UV Aerosol Index"
Unique Field Definition: OMI-Specific
Description: >
The UV aerosol index associated with the ground pixel.
- Field Name: VISAerosolIndex
Data Type: HE5T_NATIVE_FLOAT
Dimensions: nXtrack,nTimes
Range or Valids: Range is -10.0 to 30.0
Missing Value: -1.2676506e+30
Offset: 0.0d+00
Scale Factor: 1.0d+00
Units: NoUnits
Data Source: PGE
Title: "VIS Aerosol Index"
Unique Field Definition: OMI-Specific
Description: >
The VIS aerosol index associated with the ground pixel.
Core Metadata:
- 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: AutomaticQualityFlag
Mandatory: T
Data Type: VA64
Number of Values: 1
Range or Valids: Valids are "Passed", "Suspect" and "Failed"
Data Source: PGE
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: PGE
Description: >
The AutomaticQualityFlag is set to
1) "Passed" if QAPercentHighQualityData >= 90%,
2) "Suspect" if QAPercentHightQualityData >= 60% or if the input L1B
file does not have its AutomaticQualityFlag set to "Passed", and
3) "Failed" if QAPercentHighQualityData < 60%.
- Metadata Name: DayNightFlag
Mandatory: T
Data Type: VA5
Number of Values: 1
Range or Valids: Valids are "Day", "Night" and "Both"
Data Source: MCF
Description: Actual is "Day"
- 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 -1.79d-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: InputPointer
Mandatory: T
Data Type: VA255
Number of Values: 0 to 10
Range or Valids: >
Valid file names, each in double quotes, separated by commas, all
surrounded by curved brackets.
Data Source: PGE
Description: >
Example is
("OMI-Aura_L1-OML1BRUG_2002m0630t2354-o21434_v001-2003m0327t181402.he4",
"OMI-Aura_L1-OML1BRVG_2002m0630t2354-o21434_v001-2003m0327t181812.he4",
"OMI-Aura_L1-OML1BIRR_2002m0630t2354-o21434_v001-2003m0327t181812.he4",
"radiance_AERO_p06.dat", "radiance_AERO_p10.dat", "sbar_AERO_p06.dat",
"sbar_AERO_p10.dat", "Sfcalb_340_TOMS_clm.dat", "Sfcalb_380_TOMS_clm.dat",
"Sfcalb_470_Modis_clm.dat", "transmittance_AERO_p06.dat",
"transmittance_AERO_p10.dat", "Zaer_clm.dat").
- Metadata Name: LocalGranuleID
Mandatory: T
Data Type: VA80
Number of Values: 1
Range or Valids: >
"OMI-Aura_L1-OMAERUV_2003m0101t0000-o00000_v001-2003m0101t000000.he5" to
"OMI-Aura_L1-OMAERUV_2099m1231t2359-o99999_v999-2099m1231t235959.he5"
Data Source: PGE
Description: >
Example is
"OMI-Aura_L1-OMAERUV_2002m0630t2354-o21434_v001-2003m0515t181917.he5"
(see Appendix E of Reference 3).
- 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: PGE
Description: >
A granule-level quality flag that applies generally to the granule and
specifically to the parameters at the granule level.
- Metadata Name: OperationalQualityFlagExplanation
Mandatory: T
Data Type: VA255
Number of Values: 1
Range or Valids: Not applicable (free format)
Data Source: PGE
Description: >
The criteria for setting the OperationalQualityFlag should be stated
here (this Metadata will not appear in the granule).
- 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"
- 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: ParameterName
Mandatory: T
Data Type: VA40
Number of Values: 1
Range or Valids: Valid is "OMAERUV"
Data Source: PGE
Description: >
The measured science parameter expressed in the granule.
- 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 "0.9.22" (see Appendix K 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: QAPercentCloudCover
Mandatory: T
Data Type: I
Number of Values: 1
Range or Valids: 0 to 100
Data Source: PGE
Description: >
The percent of the data in the granule that have cloud cover.
- Metadata Name: QAPercentMissingData
Mandatory: T
Data Type: I
Number of Values: 1
Range or Valids: 0 to 100
Data Source: PGE
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: PGE
Description: >
The percent of the data in the granule that are out of bounds data.
- 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: 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: ReprocessingPlanned
Mandatory: T
Data Type: VA45
Number of Values: 1
Range or Valids: >
Valids are "no further update anticipated", "further update anticipated"
and "further update anticipated using enhanced PGE"
Data Source: DP
Description: Actual is "further update is anticipated"
- 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 explanation of the criteria used to set the science quality flag
should go here.
- Metadata Name: ShortName
Mandatory: T
Data Type: VA8
Number of Values: 1
Range or Valids: Valid is "OMAERUV"
Data Source: MCF
Description: Actual is "OMAERUV"
- 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: >
The volume of data contained in the granule in Mb (this Metadata will
not appear in the granule).
- Metadata Name: VersionID
Mandatory: T
Data Type: SI
Number of Values: 1
Range or Valids: 000 to 999
Data Source: MCF
Description: Actual is 000 for test and pre-launch
Product Specific Attributes:
- 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
- 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: 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: 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: 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: 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: 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: 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: 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: 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: 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
Archived Metadata:
- 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.
- Metadata Name: LongName
Mandatory: T
Data Type: VA80
Number of Values: 1
Range or Valids: >
OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo 1-Orbit L2 Swath 13x24km
Data Source: MCF
Description: >
Actual is
"OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo 1-Orbit L2 Swath 13x24km"
References: >
1. "OMI Algorithm Theoretical Basis Document, Volume III, Clouds, Aerosols, and Surface Irradiance."
(OMI-ATBD-VOL3, ATBD-OMI-03, Version 2.0, August 2002)
2. "HDF-EOS Aura File Format Guidelines"
(OMI-AURA-DATA-GUIDE, Version 2.12, 24 October 2006)
3. "OMI Science Software Delivery Guide for Version 0.9"
(OMI-SSDG-0.9.10, Version 0.9.10, 22 June 2005)
4. "OMI GDPS Input/Output Data Specification (IODS) Volume 2"
(OMI-GDPS-IODS-2, SD-OMIE-7200-DS-467, 8 November 2004)
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)
Atmos Composition
