Estimate of Snowmelt runoff using MODIS data
2006
Raighani, Behzad | Soltani Koopani, Saied | Khajeddin, Jamaleddin | Barati, Susan
Snow-cover and its equivalent water, supplies 1/3 of the water requirements for farming and its land irrigation throughout the world. Therefore, water contents estimation of a snow-cover or estimation of snowmelt runoff is necessary for Hydrologists. Several snowmelt-forecasting models have suggested which most of them require continuous monitoring of snow-cover. The most efficient means of monitoring snow-cover patches are remote monitoring through satellites imagery. In this research, snowmelt runoff forecasted in a new scheme, using maximum and mean daily temperatures, two means of snow melt measuring devices and MODIS data. According to the outcome results, one can map snow-covered area with sufficient precision using MODIS data, while the map is useful to related calculations about snow patches. We Calculated, after studying the satellite images, the snow-cover changes predicted in a new ways for the periods that the MODIS data was not available and produced maps controlling with ground truths confirmed its very high precisions. The melted water resulted from temperature changes were modeled as equations, which, their calculated amounts are comparable to the ground truths very well. With regards water flow changes, equations calculated to estimate the daily melted water flow. These equations are comparable to the ground truths as well.
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