Title :
Comparison of algorithms for retrieval of snow water equivalent from Nimbus-7 SMMR data in Finland
Author :
Hallikainen, Martti T. ; Jolma, Petri A.
Author_Institution :
Lab. of Space Technol., Helsinki Univ. of Technol., Espoo, Finland
fDate :
1/1/1992 12:00:00 AM
Abstract :
The correlation between the brightness temperature of snow-covered terrain (dry snow) and the snow-water equivalent in Finland was investigated using Nimbus-7 SMMR data. The satellite data set covers the winters of 1978-9 through 1981-2. The correlation analysis was performed for 17 different brightness temperature functions, each involving one or several frequencies and polarizations. The highest correlation coefficients between the satellite-derived brightness temperature functions and the manually measured snow-water equivalent values were obtained by using the brightness temperature difference between 37 GHz and either 18 GHz or 10.7 GHz, vertical polarization
Keywords :
remote sensing; snow; 10.7 GHz; 18 GHz; 37 GHz; AD 1978 to 1982; EHF; Finland; Nimbus-7 SMMR data; SHF; Scanning Multichannel Microwave Radiometer; algorithms; brightness temperature; correlation analysis; dry snow; polarizations; snow water equivalent; snow-covered terrain; Brightness temperature; Frequency; Information retrieval; Microwave radiometry; Performance analysis; Polarization; Satellite broadcasting; Snow; Space technology; Testing;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
