AMSR/ADEOS-II L2A Global Swath Spatially-Resampled Brightness Temperatures

View Catalog Page

Entry ID

AA_L2A

Summary

The Advanced Microwave Scanning Radiometer (AMSR) instrument on the Japan Aerospace Exploration Agency's (JAXA) Advanced Earth Observation 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 Level-2A product (AA_L2A) contains brightness temperatures at 6.9 GHz, 10.65 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz, 89.0 GHz, 50.3 GHz, and 52.8GHz. Data are resampled to be spatially consistent except for the 50.3GHz and 52.8GHz data, and therefore are available at a variety of resolutions that correspond to the footprint sizes of the observations such as 56 km, 38 km, 24 km, 21 km, 12 km, and 5.4 km, respectively. Each swath is packaged with associated geolocation fields.

AMSR was an eight-frequency, passive-microwave radiometer system with the ability to observe from day to night, under any weather conditions with less cloud effects. AMSR was a conical scan sensor that swept the surface of the Earth at about ±90 degrees centered at the direction of the satellite flight. It measured horizontally and vertically polarized radiances at 6.9, 10.65, 18.7, 23.8, 36.5, and 89.0 GHz; and vertically polarized radiances at 50.3 and 52.8 GHz. Spatial resolution of the individual measurements varies from 5 km at 89 GHz to ~50 km at 6.9 and 10.65 GHz. Data are stored in Hierarchical Data Format - Earth Observing System (HDF-EOS) format and are available from 2003-01-28 to 2003-10-24 via FTP.

Geographic Coverage

 

Spatial Coordinates:
N: 90°     S: -90°     E: 180°     W: -180°    

Data Set Citation

Dataset Creator: Japan Aerospace Exploration Agency (JAXA).
Dataset Title: AMSR/ADEOS-II L2A Global Swath Spatially-Resampled Brightness Temperatures
Dataset Release Date: 2009-04-15
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/aa_l2a.html
Dataset DOI: http://dx.doi.org/10.5067/ADEOS-II/AMSR/AA_L2A.001

Temporal Coverage

Start Date: 2003-01-28
Stop Date: 2003-10-24

Location Keywords

  • GEOGRAPHIC REGION GLOBAL

Science Keywords

  • Spectral/Engineering Microwave Brightness Temperature
  • Spectral/Engineering Microwave Microwave Imagery

Ancillary Keywords

  • AA_L2A
  • ADEOS-II
  • AMSR
  • DAAC
  • Imagery
  • Japan Aerospace Exploration Agency
  • NSIDC
  • NSIDC DAAC
  • Passive Microwave Brightness Temperatures
  • Passive Microwave Data
  • Radiance
  • Radiometers
  • Remote Sensing
  • Satellite Imagery
  • spatial resolutions
  • Tb

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere

Platform

  • ADEOS-II Advanced Earth Observing Satellite-II

Instrument

  • AMSR Advanced Microwave Scanning Radiometer

Project

  • EOSDIS Earth Observing System Data Information System
  • ESIP Earth Science Information Partners Program

Quality

Each HDF-EOS file contains core metadata with Quality Assessment (QA) metadata flags that were set by the Science Investigator-led Processing System (SIPS) at the Global Hydrology and Climate Center (GHCC) prior to delivery to NSIDC. A separate metadata file with a .xml file extension was also delivered to NSIDC with the HDF-EOS file; it contains the same information as the core metadata. Three levels of QA are conducted with the AMSR Level 2 products: automatic, operational, and science QA. If a product does not fail QA, it is ready to be used for higher-level processing, browse generation, active science QA, archive, and distribution. If a granule fails QA, SIPS does not send the granule to NSIDC until it is reprocessed. Only a QA file is produced when there is no L2A brightness temperature data that qualifies for retrieval (Conway 2002).

Data Set Progress

complete

Originating Center

NSIDC

Data Center

NASA DAAC at the National Snow and Ice Data Center
Data Center URL: http://nsidc.org/daac/index.html

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

National Snow and Ice Data Center
Data Center URL: http://nsidc.org

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Media: FTP
Distribution Size: 68 MB
Distribution Format: HDF-EOS

Personnel

Peter Ashcroft
Role: INVESTIGATOR
Phone: 1 707 545-2904 x12
Fax: 1 707 545-2906
Email: ashcroft@remss.com
Contact Address:

  • Remote Sensing Systems
  • Remote Sensing Systems
  • 438 First Street
  • Suite 200

City: Santa Rosa
Province or State: CA
Postal Code: 95401
Country: USA

Frank J. Wentz
Role: INVESTIGATOR
Phone: 1 707 545-2904 x16
Fax: 1 707 545-2906
Email: wentz@remss.com
Contact Address:

  • Remote Sensing Systems
  • Remote Sensing Systems
  • 438 First Street
  • Suite 200

City: Santa Rosa
Province or State: CA
Postal Code: 95401
Country: USA

NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Related URL

VIEW PROJECT HOME PAGE
AMSR/ADEOS-II Data

VIEW PROJECT HOME PAGE
Aqua/AMSR-E Data

Reference

Ashcroft, Peter and Frank Wentz. 2000. Algorithm Theoretical Basis Document for the AMSR Level-2A Algorithm, Revised 03 November. Santa Rosa, CA, USA: Remote Sensing Systems.

Conway, D. 2002. Advanced Microwave Scanning Radiometer - EOS Quality Assurance Plan. Huntsville, AL: Global Hydrology and Climate Center. For more information regarding related publications, see the Research Using AMSR Data Web page.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2009-04-15
Last DIF Revision Date: 2013-10-30

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

Back to Top