Snow is a component of the cryosphere which has played an important role in Earth energy balance. Northern
hemisphere snow cover extent (SCE) has steadily decreased since 1980 and in recently the trend of SCE is sharply
decreased. Because Himalaya region's shows most significant changes except for the Arctic, we analyzed this region for
SCE. We used Moderate Resolution Imaging Spectroradiometer (MODIS) snow product from 2001 to 2011 in august.
Analysis was made by considering some conditions (region, elevation, longitude and climate) which can affect the
changes in SCE. The entire SCE in Himalaya for 11 years has steadily increased(+55,098 km2). Trends for SCE in western
region has increased(+77,781km2), But trend for central and eastern have decreased -3,453 km2, -19,230km2, respectively.
According to elevation increases, the ratio of snow in each study area is increased. In 30°N~35°N SCE shows increased
trend, 27°N~28°N shows decreased trend. In tundra climate, trends for SCE are similar to regional analysis. whereas the
result in tropical climate's trend was increased. these performed result shows different side for change of SCE depending
on each condition. The result of this study were similar to the rapid decline of the northern hemisphere SCE area in
recent. The result of this study can be used to help management to water budget in Central-Asia country located to