AST_05_003

ASTER L2 Surface Emissivity V003

Version 003 eng
  • Abstract
    The ASTER L2 Surface Emissivity is an on-demand product generated using the five thermal infrared (TIR) bands (acquired either during the day or night time) between 8 and 12 ┬Ám spectral range. It contains surface emissivity over the land at 90 meters spatial resolution. Estimates of surface emissivity were thus far only derived using surrogates such as land-cover type or vegetation index. The Temperature/Emissivity Separation (TES) algorithm is used to derive both E (emissivity) and T (surface temperature). The main goals of the TES algorithm include: recovering accurate and precise emissivities for mineral substrates, and estimating accurate and precise surface temperatures especially over vegetation, water and snow.The TES algorithm is executed in the ASTER processing chain following generation of ASTER Level-2 Surface Radiance (TIR). The land-leaving radiance and down-welling irradiance vectors for each pixel are taken in account. Emissivity is estimated using the Normalized Emissivity Method (NEM), and is iteratively compensated for reflected sunlight. The emissivity spectrum is normalized using the average emissivity of each pixel. The minimum-maximum difference (MMD) of the normalized spectrum is calculated and estimates of the minimum emissivity derived through regression analysis. These estimates are used to scale the normalized emissivity and compensate for reflected skylight with the derived refinement of emissivity. V003 data set release date: 2002-05-03 Data Set Characteristics Area: ~ 60 km x 60 km Image Dimensions: 700 rows x 830 columns File Size: ~9 Megabytes Units: None Projection: Universal Transverse Mercator (UTM) Data Format: HDF-EOS Data Fields: 5
  • Version Description
    Not provided
  • DOI

    10.5067/ASTER/AST_05.003

    http://dx.doi.org

Data Identification Fields:

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    Processing Level

    2

    ASTER Level 2 Emissivity Product

    Quality
    Sensor anomalies may be present.
    Collection Progress

    In Work

    Use Constraints
    See https://lpdaac.usgs.gov/dataset_discovery/aster/aster_policies for redistribution and citation policies.
    Access Constraints

    See https://lpdaac.usgs.gov/dataset_discovery/aster/aster_policies for data access information.

    Publication References
    • Publication reference title not provided
        Not provided
Related URLs
    Science Keywords
    • EARTH SCIENCE
    • LAND SURFACE
    • SURFACE RADIATIVE PROPERTIES
    • EMISSIVITY
Other Descriptive Keywords
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Ancillary Keywords
  • LP DAAC
  • EOSDIS
  • USGS/EROS
  • ESIP
  • USGS
  • LPDAAC
ISO Topic Categories
  • climatologyMeteorologyAtmosphere
  • geoscientificInformation
Additional Attributes
  • DAR_ID
    INT
    ID of the Data Acquisition Request
    Resolution Range Begin Range End Unit of Measure Accuracy

  • GenerationDateandTime
    DATETIME_STRING
    Date and Time granule produced
    Resolution Range Begin Range End Unit of Measure Accuracy

  • LowerLeftQuadCloudCoverage
    INT
    The percentage of cloud coverage for the lower left quadrant
    Resolution Range Begin Range End Unit of Measure Accuracy

  • LowerRightQuadCloudCoverage
    INT
    The percentage of cloud coverage for the lower right quadrant
    Resolution Range Begin Range End Unit of Measure Accuracy

  • SceneCloudCoverage
    INT
    Percentage of cloud coverage for the whole scene
    Resolution Range Begin Range End Unit of Measure Accuracy

  • Solar_Azimuth_Angle
    FLOAT
    Angle of the sun clockwise from true North
    Resolution Range Begin Range End Unit of Measure Accuracy

  • Solar_Elevation_Angle
    FLOAT
    Angle of the sun above the horizon
    Resolution Range Begin Range End Unit of Measure Accuracy

  • UpperLeftQuadCloudCoverage
    INT
    The percentage of cloud coverage for the upper left quadrant
    Resolution Range Begin Range End Unit of Measure Accuracy

  • UpperRightQuadCloudCoverage
    INT
    The percentage of cloud coverage for the upper right quadrant
    Resolution Range Begin Range End Unit of Measure Accuracy

  • RadiometricDBVersion
    STRING
    The version number of the Radiometric Database used in Level 1 processing.
    Resolution Range Begin Range End Unit of Measure Accuracy

  • GeometricDBVersion
    STRING
    The version number of the Geometric Database used in Level 1 processing.
    Resolution Range Begin Range End Unit of Measure Accuracy

  • ASTERGains
    STRING
    Identifies the Gain setting for the Bands: HGH, NOR, LO1, LO2, LOW, OFF
    Resolution Range Begin Range End Unit of Measure Accuracy

  • ASTERGRANULEID
    STRING
    Unique identifier for the data granule held at the ASTER GDS
    Resolution Range Begin Range End Unit of Measure Accuracy

  • ASTERProcessingCenter
    STRING
    Name of the center where these ASTER data were processed
    Resolution Range Begin Range End Unit of Measure Accuracy

  • ASTERTIRPointingAngle
    FLOAT
    Specifies the pointing angle of the ASTER Thermal Infrared (TIR) sensor
    Resolution Range Begin Range End Unit of Measure Accuracy

  • ASTERMapOrientationAngle
    FLOAT
    Denotes the angle between the path oriented image and the map oriented image for this ASTER scene.
    Resolution Range Begin Range End Unit of Measure Accuracy
    -180.0 180.0

  • ASTERReceivingCenter
    STRING
    Name of the center where these ASTER data were received
    Resolution Range Begin Range End Unit of Measure Accuracy

  • ASTERSceneOrientationAngle
    FLOAT
    Denotes the azimuth angle made by the meridian at the ASTER scene center and the along-track direction, rotating from North toward East.
    Resolution Range Begin Range End Unit of Measure Accuracy
    0.0 180.0

  • source_granule_ur
    STRING
    Granule-ur of the source granule
    Resolution Range Begin Range End Unit of Measure Accuracy

  • metadata.uuid
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • metadata.extraction_date
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • metadata.keyword_version
    FLOAT
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • DIF9.0-to-DIF10-Converter
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • Discipline
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • IDN_Node.Short_Name
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • IDN_Node.UUID
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • Original.Dataset_Citation.DOI
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • Original.Metadata_Version
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • Original.Dataset_Language
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

  • Original.xsi:schemaLocation
    STRING
    Not provided
    Resolution Range Begin Range End Unit of Measure Accuracy

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    TERRA
    Instruments
    • ASTER
Projects
Project Short Name Campaigns Project Dates
EOSDIS No campaigns listed. No dates provided.
ESIP No campaigns listed. No dates provided.

Temporal Information Fields:

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Spatial Information Fields:

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Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • LP DAAC
    ARCHIVER
    Land Processes Distributed Active Archive Center

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

Data Contacts

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  • Data Center Contact
    LP DAAC USER SERVICES

    LP DAAC

    LP DAAC User Services
    U.S. Geological Survey (USGS)
    Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198-0001

    • Email
    • (Toll Free) (866) 573-3222
    • (605) 594-6116

Collection Citations Fields:

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