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AMSR-E/Aqua Daily L3 Surface Soil Moisture, Interpretive Parameters, & QC EASE-GridsEntry ID: AE_Land3
Abstract: The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the NASA Earth Observing System (EOS) Aqua satellite provides global passive microwave measurements of terrestrial, oceanic, and atmospheric variables for the investigation of water and energy cycles. Soil moisture and other land surface variables are key variables in understanding land surface hydrology and ... in modeling ecosystems, weather, and climate. This gridded Level-3 land surface product (AE_Land3) includes daily measurements of surface soil moisture and vegetation/roughness water content interpretive information, as well as brightness temperatures and quality control variables. Ancillary data include time, geolocation, and quality assessment. Input brightness temperature data, corresponding to a 56 km mean spatial resolution, are resampled to a global cylindrical 25 km Equal-Area Scalable Earth Grid (EASE-Grid) cell spacing. Data are stored in HDF-EOS format, and are available from 19 June 2002 to the present via FTP.
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Data Set Citation
Dataset Originator/Creator: Eni G. Njoku
Dataset Title: AMSR-E/Aqua Daily L3 Surface Soil Moisture, Interpretive Parameters, & QC EASE-Grids
Dataset Release Date: 2004-01-01
Dataset Release Place: Boulder, CO U.S.A.
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Other Citation Details: updated 2008 for Version 2Online Resource: http://nsidc.org/data/ae_land3.html
Start Date: 2002-06-18
Latitude Resolution: 25 km
Longitude Resolution: 25 km
Temporal Resolution: daily
ISO Topic Category
Quality Each HDF-EOS file contains core metadata with QA metadata flags that are 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 in XML format is also delivered to NSIDC with the HDF-EOS file; it contains the same information as the core metadata. Three levels of quality assessment (QA) are conducted with the AMSR-E Level 2 and 3 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. Level-3 products that fail QA are never delivered to NSIDC (Conway 2002).
Data Set Progress
Distribution Media: FTP
Distribution Size: approx. 60 MB per granule (i.e., per
Distribution Format: HDF-EOS
Email: njoku at lor.jpl.nasa.gov
M/S 300-233 Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive
Province or State: CA
Postal Code: 91109-8099
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309-0449
Conway, D. 2002. Advanced Microwave Scanning Radiometer - EOS Quality Assurance Plan. Huntsville, AL: Global Hydrology and Climate Center.
Njoku, Eni G, T. Chan, W. Crosson, and A. Limaye. 2004. Evaluation of the AMSR-E Data Calibration Over Land. Italian Journal of Remote Sensing 29 (4): 19 - 37.
Njoku, Eni G., T. L. Jackson, V. Lakshmi, T. Chan, and S.V. Nghiem. 2003. Soil Moisture ... Retrieval from AMSR-E. IEEE Transactions on Geoscience and Remote Sensing 41 (2): 215-229.
Njoku, Eni G, T. Chan, W. Crosson, and A. Limaye. 2004. Evaluation of the AMSR-E Data Calibration Over Land. Italian Journal of Remote Sensing. 30/31: 19-37.
Njoku, Eni G. and T. K. Chan, 2005. Vegetation and Surface Roughness Effects on AMSR-E Land Observations. Remote Sensing of Environment (in press).
Njoku, Eni G. 1999. AMSR Land Surface Parameters. Algorithm Theoretical Basis Document, Version 3.0. Pasadena, CA, USA: NASA Jet Propulsion Laboratory.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2004-02-24
Last DIF Revision Date: 2012-05-03