EFFECTS OF METEOROLOGICAL DATA’S ERROR ON CALUCULATION OF SNOWMELT IN MOUNTAINOUS AREAS

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  • 山岳地帯における気象データの誤差が雪氷融解量計算に及ぼす影響

Abstract

<p> In Central Asia, where is known for its dry climate, water supply mostly depends on melting of the glaciers of mountains at the upper basins. In order to calculate the amount of available water at each season, it is required to demonstrate seasonal water and heat supply, as well as that of the annual. However, Land Process Model SiBUC is reported to evaluate the peak of snow/ice melting period too early than it actually is and it can be inferred that it has some room for improvement in the accuracy of the peak of snow/ice melting. This research aims to analyze the effects of temperature on snow/ice melting and focus on the interpolation of temperature; one of the seven input data of SiBUC. For the analysis, JRA55 and the observed meteorological data of a glacier in Kyrgyzstan are used as the input data of SiBUC. As a result, short wave radiation, long wave radiation as well as temperature turned out to be significantly related to the melting the glacier and that JRA55 and the observed data has a huge discrepancy in short wave radiation.</p>

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