AST_L1AE_003

ASTER Expedited L1A Reconstructed Unprocessed Instrument Data V003

Version 003
  • Abstract
    The ASTER Expedited L1A Reconstructed Unprocessed Instrument Data is produced with the express purpose of providing the ASTER Science Team members and others, data of their particular interest in quick turn-around time from the moment the data are acquired. This is usually done to support on-going field calibration and validation efforts or to support emergency response to natural disasters when processed Level-1 data with minimum turn-around time would prove beneficial in initial damage or impact assessments. This data set is expected to be publicly available for a period of 30 days after which time it will be removed from the archive. This is done because the routinely processed (Production Data Set or PDS) version of this data set will be available from Japan in due course and available for search and order from the LP DAAC archives. ASTER Expedited Data Sets (EDS) serve the short-term requirements of a small group of scientists and fulfill immediate imagery needs during times of natural disasters. Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details. The general product description details as described for the ASTER Level 1A Data Set - Reconstructed, unprocessed Instrument Data apply to the expedited data set with a few notable exceptions. These include: • The Expedited Level-1A data set does not contain the VNIR 3B (aft-viewing) band • This data set does not have short-term calibration for the Thermal Infrared (TIR) sensor • The registration quality of this data set is likely to be lower, and also vary from scene to scene The Level-0 data downlink from the Tracking Data Relay Satellite System (TDRSS) at White Sands, NM is received at the EOS Data Operations System (EDOS) facility at the Goddard Space Flight Center (GSFC). Following some pre-processing, EDOS directly transmits that data (via the GSFC DAAC) to LP DAAC where the data are processed and the level-1 EDS is produced. The ASTER Level-1AE product contains reconstructed, unprocessed instrument digital data derived from the telemetry streams of the 3 telescopes at their respective ground resolutions: Visible Near Infrared (VNIR), 15 m, Shortwave Infrared (SWIR), 30 m, and Thermal Infrared (TIR), 90 m. There is no browse product provided for the expedited L1A data set. V003 data set release date: 2002-05-03 Data Set Characteristics: Area: ~60km x 60km Image Dimensions: VNIR: 4200 rows x 4100 columns SWIR: 2100 rows x 2048 columns TIR: 700 rows x 700 columns File Size: VNIR (1, 2, 3N): ~49.3 MB SWIR (4 through 9): ~25 MB TIR (10 through 14): ~4.7 MB Total: 85 Megabytes Spatial Resolution: VNIR: 15m SWIR: 30m TIR: 90m Units: Digital count Projection: Universal Transverse Mercator (UTM) Data Format: HDF-EOS or GeoTIFF Data Fields: 14
  • Version Description
    Added Associated DLL name attribute.
  • DOI

    10.5067/ASTER/AST_L1AE.003

    https://doi.org

Data Identification Fields:

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    Data Dates
    Creation
    Last Revision
    Processing Level

    1A

    Radiometric Counts

    Quality
    Collection Progress

    Active

    Metadata Associations
    Association Type Entry ID Description Version
    Dependent AST_L1B Radiometric values computed from the raw instrument counts
Related URLs
    Science Keywords
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • INFRARED WAVELENGTHS
    • REFLECTED INFRARED
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • INFRARED WAVELENGTHS
    • THERMAL INFRARED
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • VISIBLE WAVELENGTHS
    • VISIBLE IMAGERY

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    Terra
    Instruments
    • ASTER
Projects
Project Short Name Campaigns Project Dates
Terra
  • Terra
 No dates provided.

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • LP DAAC
    DISTRIBUTOR
    Land Processes Distributed Active Archive Center

    U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198

    M-F, 8 a.m. to 4 p.m. Central Time
    • 605-594-6116
    • 866-573-3222
    • Email
    Contact Details

    LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.

    The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.

    https://lpdaac.usgs.gov/
    • Home Page
  • JP/METI/AIST/JSS/GDS
    PROCESSOR
    Ground Data System, Japan Space Systems, National Institute of Advanced Industrial Science and Technology, Ministry of Economy, Trade, and Industry, Japan

    This data center does not have any contact mechanisms listed.

    http://www.jspacesystems.or.jp/en_
    • Home Page

Data Contacts

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  • LP DAAC User Services
    User Services
    LP DAAC User Services

    LP DAAC

    U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198

    M-F, 8 a.m. to 4 p.m. Central Time
    • 605-594-6116
    • 866-573-3222
    • Email
    Contact Details

    LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.

    The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.

    https://lpdaac.usgs.gov/
    • Home Page

Collection Citations Fields:

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Metadata Dates
Creation
Last Revision