AMSR-L1A_003

AMSR/ADEOS-II L1A Raw Observation Counts V003

Version 003
  • Abstract
    The Advanced Microwave Scanning Radiometer (AMSR) instrument on the Japan Aerospace Exploration Agency's (JAXA) Advanced Earth Observing Satellite-II (ADEOS-II) provided global passive microwave measurements of land, ocean, and atmospheric variables for the investigation of global water and energy cycles. The AMSR/ADEOS-II L1A Raw Observation Counts (AMSR-L1A) data set was processed from Level 0 science packet data by the JAXA Earth Observation Center (EOC) in Japan. Each half-orbit data granule consists of observation counts, antenna temperature coefficients, offsets for calculating antenna temperatures, calibration temperature counts, land/ocean flags, time, latitude, longitude, and navigation fields in Hierarchical Data Format (HDF). AMSR is a conical scan sensor that sweeps the surface of the Earth at about ±90 degrees centered at the direction of the satellite flight. The swath width is about 1600 km. It measures horizontally and vertically polarized radiance at 6.9, 10.65, 18.7, 23.8, 36.5, and 89.0 GHz; and vertically polarized radiance at 50.3 and 52.8 GHz. AMSR collected 290 data points per scan for the 6 GHz to 36 GHz channels and 580 data points per scan for the 89 GHz channel. Data are available via FTP.
  • Version Description
    The improved Version 3 AMSR-L1A product features empirical corrections to the co-registration parameters A1 and A2, and an updated parameter file used for correcting the AMSR 89 GHz position information. As a result, Version 3 AMSR-L1A data provide improved accuracy for the following: latitude and longitude, land/ocean flags, earth incidence angle, earth azimuth angle, sun azimuth angle, and sun elevation angle.

Data Identification Fields:

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    Data Dates
    Creation
    Last Revision
    Processing Level

    1A

    Radiometric Counts

    Quality
    Collection Progress

    Complete

    Access Constraints

    These data are offered free of charge. You may use these data freely, provided that you cite NSIDC DAAC as the source, and provide an acknowledgment in any published papers.

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • MICROWAVE
    • SENSOR COUNTS

Acquisition Information Fields:

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Platforms
  • Spacecraft
    ADEOS-II
    Instruments
    • AMSR

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN ORBIT
Location Keywords

Data Centers

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  • JAXA
    PROCESSOR

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

  • NSIDC
    ARCHIVER

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

  • National Snow and Ice Data Center
    ARCHIVER

    1540 30th St Campus Box 449
    Boulder, Colorado 80309-0449

    9:00 A.M. to 5:00 P.M., U.S. Mountain Time, Monday through Friday, excluding U.S. holidays.
    • 303-492-6199
    • 303-492-2468
    • Email
    Contact Details

    Contact by e-mail first

  • JAXA Earth Observation Center
    PROCESSOR

    1401 Mumanoue
    Hatoyama-machi, Hiki-gun 355-0302

    9:30 - 17:30 (Japanese Standard Time)
    • +81-492-98-1307
    • +81-492-98-1398
    • Email
    Contact Details

    Email: orderdesk@eoc.nasda.go.jp

Data Contacts

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Collection Citations Fields:

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    Collection Citations
    • Collection citation title not provided

      Japan Aerospace Exploration Agency (JAXA). 2014. AMSR/ADEOS-II L1A Raw Observation Counts. Version 3. [indicate subset used]. Boulder, Colorado USA: NASA National Snow and Ice Data Center Distributed Active Archive Center. http://dx.doi.org/10.5067/ADEOS-II/AMSR/AMSR-L1A.003.