極域における積雪の長期的動態解明のための衛星計測マイクロ波データ解析手法の開発 : 2周波数の衛星観測による輝度温度データの処理と解析

概要

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Processing and analysing method which extracts the emissivity of snowpack and estimates the snowpack parameters from the data of brightness temperature measured by satellite equipped with microwave radiometer such as MSR/ MOS-1 and AMSR/ADEOS-2, are presented. Using the methods, when the MSR data obtained by the observation of Hokkaido area were analyzed, the results having good correspondence to the snow characteristics observed on the ground were obtained. The methods were also applied to polar region observation MSR data that the ground truth data had not been obtained, so far, and it was verified, for monitoring the long-term dynamic phase of the snowcover in polar region, that the estimation of the snowpack parameters of depth and grain size is possible using the brightness temperature data at the two frequencies of 23.8 and 31.4GHz obtained by MSR/ MOS-1.
2007-03-26