Abstract
We developed a snow retrieval algorithm which is capable to estimate the snow quantity from the satellite microwave data (Tsutsui et. al.; 2007). However it has various problems in order to estimate the high-accuracy global snow depth yet. : 1) Occurrence of the time-oriented fluctuation in the estimated snow depth, 2) Underestimation of snow depth in heavy-snow region, 3) Erroneous estimation of snow depth in the snow free region. In this study, this snow retrieval algorithm was improved about these problems. Furthermore the effectiveness of improvement was verified in the GTS ground-based 111 stations. In the result, the estimated snow depth was in relatively good agreement with the in situ data.
