AMSR-E/Aqua Daily EASE-Grid Brightness Temperatures
Entry ID:
NSIDC-0301
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Summary
Abstract:
This document pertains to two data sets: AMSR-E/Aqua Daily EASE-Grid Brightness Temperatures (NSIDC-0301) and AMSR-E/Aqua Daily Global Quarter-Degree Gridded Brightness Temperatures (NISDC-0302). The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the NASA EOS Aqua satellite provides global passive microwave measurements of the Earth. NSIDC produces AMSR-E ... gridded brightness temperature data by interpolating AMSR-E data (6.9 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz, and 89.0 GHz) to the output grids from swath space using an Inverse Distance Squared (ID2) method. AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures (AE_L2A) input source data are used. These data are provided in three EASE-Grid projections (north and south Lambert azimuthal and global cylindrical) at 25 km resolution, and in one global cylindrical, equidistant latitude-longitude projection at 0.25 degree (quarter-degree) resolution. For both data sets, spatial coverage is global, data are daily, coverage begins 19 June 2002, and processing is ongoing. Data are provided via FTP as they become available. Brightness temperature data (in tenths of kelvins) are two-byte unsigned integers and time files are two-byte signed integers. 
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Description:
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Geographic Coverage
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Spatial coordinates
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N: 90.0
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S: -90.0
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E: 180.0
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W: -180.0
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Data Set Citation
Dataset Originator/Creator:
Knowles, Ken
Dataset Title:
AMSR-E/Aqua daily EASE-Grid Brightness Temperatures
Dataset Release Date:
2006-12-08
Dataset Release Place:
Boulder, Colorado USA
Dataset Publisher:
National Snow and Ice Data Center (NSIDC)
Data Presentation Form:
Digital media
Online Resource:
http://nsidc.org/data/nsidc-0301.html
Data Resolution
Latitude Resolution:
25 km
Longitude Resolution:
25 km
Temporal Resolution:
Daily
Quality
Extensive quality control procedures are followed in the production of the AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures (AE_L2A) source data. See the Quality Assessment section of the AE_L2A documentation for more information. The gridding procedure assumes that source data brightness temperatures are legitimate, and performs no filtering of input data based on quality flags.
Data Set Progress
IN WORK
Distribution
Distribution Media:
FTP
Distribution Size:
27 MB per day, uncompressed, north
Distribution Format:
binary
Fees:
none
Distribution Media:
FTP
Distribution Size:
27 MB per day, uncompressed, south
Distribution Format:
binary
Fees:
none
Distribution Media:
FTP
Distribution Size:
42 MB per day, uncompressed, global
Distribution Format:
binary
Fees:
none
Personnel
Role:
INVESTIGATOR
Phone:
303-492-6199
Fax:
303-492-2468
Email:
nsidc at 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
Role:
INVESTIGATOR
Phone:
303-492-5692
Email:
savoie at nsidc.org
Contact Address:
National Snow and Ice Data Center
University of Colorado
CIRES, 449 UCB
City:
Boulder
Province or State:
CO
Postal Code:
80309-0449
Country:
USA
Role:
INVESTIGATOR
Phone:
+1 (303)-492-6199
Fax:
+1 (303)-492-2468
Email:
rlax at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES 449 UCB
University of Colorado
City:
Boulder
Province or State:
Colorado
Postal Code:
80309-0449
Country:
USA
Role:
INVESTIGATOR
Email:
brodzik at 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
Role:
TECHNICAL CONTACT
Phone:
+1 (303) 492-6199
Fax:
+1 (303) 492-2468
Email:
nsidc at 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
Publications/References
Ashcroft, P. and F. Wentz. 2000. Algorithm Theoretical Basis Document for the AMSR Level-2A Algorithm, Revised 03 November. Santa Rosa, California USA: Remote Sensing Systems.
Brodzik, M. J. and K. W. Knowles. 2002. 'EASE-Grid: A Versatile Set of Equal-Area Projections and Grids' in M. Goodchild (Ed.) Discrete Global Grids. Santa Barbara, California, USA: National Center for Geographic Information & Analysis.
Knowles, Kenneth W. 1993. Points, Pixels, Grids, and Cells -- A Mapping and Gridding Primer. Unpublished report to the National Snow and Ice Data Center, Boulder, Colorado USA.
Knowles, Kenneth W. Intercomparison of Resampling Methods for SMMR Pathfinder in EASE-Grid Format. Unpublished report to geospatialmethods.org, Boulder, Colorado USA.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date:
2006-12-04
Last DIF Revision Date:
2012-05-14
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