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Snow reflectance from Landsat-4 Thematic MapperIn California 75 percent of the agricultural water supply comes from the melting Sierra Nevada snowpack. Basin-wide spectral albedo measurements from the Landsat-4 Thematic Mapper (TM) could be used to better forecast the timing of the spring runoff, because these data can be combined with solar radiation calculations to estimate the net radiation balance. The TM is better-suited for this purpose than the Multispectral Scanner because of its larger dynamic range. Saturation still occurs in bands 1-4, but is severe only in TM1 (0.45-0.52 micron). Snow reflectance in TM2 (0.43-0.61 micron) is typical of the visible wavelength region, where reflectance is almost insensitive to crystal size but sensitive to contamination. TM4 (0.78-0.90 micron) allows estimation of effective optical grain size and thereby spectral extension throughout the near-infrared. TM5 (1.57-1.78 microns) can discriminate clouds from snow.
Document ID
19840050754
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dozier, J.
(California, University Santa Barbara, CA, United States)
Date Acquired
August 12, 2013
Publication Date
May 1, 1984
Publication Information
Publication: IEEE Transactions on Geoscience and Remote Sensing
Volume: GE-22
ISSN: 0196-2892
Subject Category
Earth Resources And Remote Sensing
Accession Number
84A33541
Funding Number(s)
CONTRACT_GRANT: NAS5-27463
Distribution Limits
Public
Copyright
Other

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