BOREAS FOLLOW-ON DSP-04 1994 ERS-1 LEVEL-4 LANDSCAPE FREEZE/THAW MAPS, VER. 1.0Entry ID: dsp04_ers1maps
Abstract: The BOREAS DSP-4 team acquired and analyzed imaging radar data from the ESA's ERS-1 over a complete annual cycle at the BOREAS sites in Canada in 1994 to detect shifts in radar backscatter related to varying environmental conditions. Two independent transitions correlating with snow melt and soil thaw onset, and possible canopy thaw were revealed by the data. The results demonstrated that radar ... provides an ability to observe thaw transitions at the beginning of the growing season, which in turn helps constrain the length of the growing season. The data presented here are gridded maps of landscape freeze/thaw state derived from backscatter change maps. The backscatter change maps were computed from radar backscatter images covering the southern BOREAS sites. The freeze/thaw classifications were determined through application of a change detection threshold based on temporal backscatter change relative to a winter-time frozen reference state. The data are provided as both ASCII text and as binary image (*.gif) format files.
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Data Set Citation
Dataset Originator/Creator: MCDONALD, K.
Dataset Title: BOREAS FOLLOW-ON DSP-04 1994 ERS-1 LEVEL-4 LANDSCAPE FREEZE/THAW MAPS, VER. 1.0
Dataset Release Date: 2001
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/590Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=590&term2attribut...
Start Date: 1994-02-14Stop Date: 1994-12-14
Distribution Media: CD-ROM
Distribution Media: FTP
Distribution Size: 8.5 MB
Distribution Format: ASCII
Email: tom at ccg.cmdl.erl.gov
Environmental Research Laboratories Climate Monitoring and Diagnostics Laboratory (CMDL) National Oceanic and Atmospheric Administration (NOAA)
Province or State: CO
Postal Code: 80303-3328
Email: Pieter.tans at noaa.gov
R/GMD1, 325 Broadway
Province or State: CO
Postal Code: 80305-3337
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Creation and Review Dates
Last DIF Revision Date: 2003-04-03