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Satellite-derived ice data sets no. 2: Arctic monthly average microwave brightness temperatures and sea ice concentrations, 1973-1976A summary data set for four years (mid 70's) of Arctic sea ice conditions is available on magnetic tape. The data include monthly and yearly averaged Nimbus 5 electrically scanning microwave radiometer (ESMR) brightness temperatures, an ice concentration parameter derived from the brightness temperatures, monthly climatological surface air temperatures, and monthly climatological sea level pressures. All data matrices are applied to 293 by 293 grids that cover a polar stereographic map enclosing the 50 deg N latitude circle. The grid size varies from about 32 X 32 km at the poles to about 28 X 28 km at 50 deg N. The ice concentration parameter is calculated assuming that the field of view contains only open water and first-year ice with an ice emissivity of 0.92. To account for the presence of multiyear ice, a nomogram is provided relating the ice concentration parameter, the total ice concentration, and the fraction of the ice cover which is multiyear ice.
Document ID
19870020588
Document Type
Technical Memorandum (TM)
Authors
Parkinson, C. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Comiso, J. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Zwally, H. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 5, 2013
Publication Date
May 1, 1987
Subject Category
OCEANOGRAPHY
Report/Patent Number
NASA-TM-87825
NAS 1.15:87825
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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