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A Microwave Technique for Mapping Ice Temperature in the Arctic Seasonal Sea Ice ZoneA technique for deriving ice temperature in the Arctic seasonal sea ice zone from passive microwave radiances has been developed. The algorithm operates on brightness temperatures derived from the Special Sensor Microwave/Imager (SSM/I) and uses ice concentration and type from a previously developed thin ice algorithm to estimate the surface emissivity. Comparisons of the microwave derived temperatures with estimates derived from infrared imagery of the Bering Strait yield a correlation coefficient of 0.93 and an RMS difference of 2.1 K when coastal and cloud contaminated pixels are removed. SSM/I temperatures were also compared with a time series of air temperature observations from Gambell on St. Lawrence Island and from Point Barrow, AK weather stations. These comparisons indicate that the relationship between the air temperature and the ice temperature depends on ice type.
Document ID
20000038177
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
St.Germain, Karen M.
(Naval Research Lab. Washington, DC United States)
Cavalieri, Donald J.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1997
Publication Information
Publication: Laboratory for Hydrospheric Processes Research Publications
ISSN: 0196-2892
Subject Category
Earth Resources And Remote Sensing
Funding Number(s)
PROJECT: RTOP 622-82-13
PROJECT: RTOP 229-04-15
Distribution Limits
Public
Copyright
Other

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