Study on the process of snowmelt based on the 3S technology

Shifeng Fang; Huan Pei; Wei Dai; Zhihui Liu; Qingdong Shi; Quidong Zhao; Zhi Lu; Min Li; Yan Yan

doi:10.1117/12.725527

22 October 2007 Study on the process of snowmelt based on the 3S technology

Shifeng Fang, Huan Pei, Wei Dai, Zhihui Liu, Qingdong Shi, Quidong Zhao, Zhi Lu, Min Li, Yan Yan

Proceedings Volume 6679, Remote Sensing and Modeling of Ecosystems for Sustainability IV; 66790K (2007) https://doi.org/10.1117/12.725527
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

The research on snowmelt process is very important to flood and drought calamity monitoring and forecasting, as well as to water resource management. A distributed snowmelt runoff model based on the "3S" technology has been designed and developed in this paper. The distributed snowmelt runoff model is based on energy balance and water quantity balance, which consists of three parts: grid snowmelt model, grid runoff yield model and grid catchments model. Snowmelt and runoff yield process are all based on grid scale, so the model is provided with distributing character and has strict physical mechanism. An important concept of "Unit Period of Time" was put forward in the paper for time scale conversion, and thereby developed "Degree and Cent Snowmelt Runoff Model", and gave some thoughts for the difficult problem of hydrology time scale conversion. Another important concept of "Freezing and Melting Coefficient" had also been brought forward here, which is aimed to explain the repetitive freezing and melting physical mechanism in the snowmelt period, so it has important significance to exactly hold the snowmelt process. Besides, a Snowmelt Runoff Simulating System had been developed, which adopted methods of the combination of B/S and C/S, using a great deal of remote sensing data, weather data and hydrology data, realizing the arithmetic of the model, as well as the distributed stimulation of the discharge of the typical study area, Juntanghu Basin. Validation of this model with the true measured data resulted an average relative error under 0.18, indicating that the model was able to realize simulating the process of the snowmelt well.

Citation Download Citation

Shifeng Fang, Huan Pei, Wei Dai, Zhihui Liu, Qingdong Shi, Quidong Zhao, Zhi Lu, Min Li, and Yan Yan "Study on the process of snowmelt based on the 3S technology", Proc. SPIE 6679, Remote Sensing and Modeling of Ecosystems for Sustainability IV, 66790K (22 October 2007); https://doi.org/10.1117/12.725527

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KEYWORDS

Data modeling

Floods

Solar radiation models

Computer simulations

Remote sensing

Geographic information systems

Computing systems

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