AMSR-E/Aqua L2B Surface Soil Moisture, Ancillary Parms, & QC EASE-Grids  View Catalog Page Entry ID
AE_Land
Summary
The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the NASA 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 Level-2B land surface product (AE_Land) includes daily measurements of surface soil moisture, vegetation/roughness water content interpretive information, and quality control variables. Ancillary data include time, geolocation, and quality assessment. Input brightness temperature data at 10.7 GHz, corresponding to a 38 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 point format, and are available from 18 June 2002 to the present via FTP.
Geographic Coverage
Spatial Coordinates:
N: 89.24°
S: -89.24°
E: 180°
W: -180°
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Data Set Citation
Dataset Creator: E.G. Njoku
Dataset Title: AMSR-E/Aqua L2B Surface Soil Moisture, Ancillary Parms, & 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)
Version: 1
Online Resource: http://nsidc.org/data/ae_land.html
Temporal Coverage
Start Date: 2002-06-18
Data Resolution
Latitude Resolution: 25 km
Longitude Resolution: 25 km
Temporal Resolution: Each swath spans 50 minutes.
Location Keywords
- Geographic Region Global
Science Keywords
- Biosphere Vegetation Plant Characteristics Vegetation Water Content
- Land Surface Land Temperature Land Surface Temperature
- Land Surface Soils Soil Moisture/Water Content
- Land Surface Soils Soil Temperature
Ancillary Keywords
- AE_Land
- AMSR-E
- Aqua
- BRIGHTNESS TEMPERATURES
- DAAC
- EASE-Grid
- EOS PM-1
- EOSDIS
- Hydrology
- Imagery
- land surface temperatures
- NASA
- NSIDC
- Passive Microwave Radiation
- Radiance
- Remote Sensing
- Soil Water Content
- Surface Soil Moisture
- Tbs
- Vegetation Status
- Vegetation Water Content
Platform
- AQUA Earth Observing System, AQUA
Instrument
- AMSR-E Advanced Microwave Scanning Radiometer-EOS
Project
- EOS Earth Observing System
Quality
Each HDF-EOS file contains core metadata with Quality Assessment (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 (.xml file extension) is 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-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
IN WORK
Data Center
National Snow and Ice Data Center
Data Center URL: http://nsidc.org
Data Set ID: AE_Land
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
NSIDC Distributed Active Archive Center
Data Center URL: http://nsidc.org/daac/index.html
Data Set ID: AE_Land1
Data Center Personnel
Name: NSIDC DAAC 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: 0.61 MB per half-orbit granule
Distribution Format: HDF-EOS
Personnel
NSIDC USER SERVICES
Role: TECHNICAL CONTACT
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
ENI G. NJOKU
Role: INVESTIGATOR
Phone: 818-354-3693
Email: njoku@lor.jpl.nasa.gov
Contact Address:
M/S 300-233
Jet Propulsion Laboratory
California Institute of Technology
4800 Oak Grove Drive
City: Pasadena
Province or State: CA
Postal Code: 91109-8099
Country: USA
Related URL
VIEW RELATED INFORMATION
AMSR-E Data at NSIDC
VIEW RELATED INFORMATION
NASA AMSR-E web site
Reference
Conway, D. 2002. Advanced Microwave Scanning Radiometer - EOS Quality Assurance Plan. Huntsville, AL Global Hydrology and Climate Center.
Njoku, E. 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, E., 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, E.G. and S.K. Chan. 2006. Vegetation and Surface Roughness Effects on AMSR-E Land Observations. Remote Sensing Environment 100(2): 190-199.
Njoku, E. G. 1999. AMSR Land Surface Parameters. Algorithm Theoretical Basis Document: Surface Soil Moisture, Land Surface Temperature, Vegetation Water Content, Version 3.0. Pasadena, CA USA: NASA Jet Propulsion Laboratory.
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 2004-02-24
Last DIF Revision Date: 2005-03-21
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