Acta Geographica Sinica ›› 2010, Vol. 65 ›› Issue (5): 543-552.doi: 10.11821/xb201005004

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Distributed Modeling of Global Solar Radiation of Rugged Terrain of the Yangtze River Basin

WANG Li; QIU Xin-fa; WANG Pei-fa; LIU Ai-li   

  1. School of Remote Sensing of Nanjing University of Information Science and Technology; Nanjing 210044; China
  • Received:2010-01-08 Revised:2010-03-22 Online:2010-05-25 Published:2010-05-25
  • Supported by:

    National Natural Science Foundation for Young Scholars. No.S0508016001; Meteorological New Technologies Popularization Projects of the China Meteorological Administration. No.CMATG2006Z10; Meteorological Disaster Key Laboratory of Jiangsu Province, No.KLME050102


Based on the distributed model for calculating astronomical solar radiation of the rugged topography and the terrain shield model, by using meteorological observation data of the Yangtze River Basin (including the routine meteorological data and the solar radiation data), NOAA-AVHRR of remote sensing data (offering surface Aledo) and the digital elevation model (DEM) data with a resolution of 1 km × 1 km as a terrain response of the main data, a distributed direct solar radiation model, a distributed diffuse radiation model and a distributed terrain reflectance radiation model of the Yangtze River Basin are set up separately, and a distributed model for calculating global solar radiation over rugged terrains is developed for the Yangtze River basin. This paper deeply analyzes simulation results errors and variations of global solar radiation due to locality and terrains. The results suggest that the global solar radiation to be affected, owing to different seasons, is followed by spring > winter > summer > autumn and the impact degree was enhanced owing to increases of altitude, slope, latitude, trend, from the aspect perspective, the global solar radiation quantity over mountainous areas for the Yangtze Rive Basin influenced by local topographic factors has a clear spatial difference and subsists sunny slope (or southern slope) obviously larger than shady slope (or northern slope). Simulation error analysis shows that average absolute error of simulation is 13.04177 MJm-2, average relative error 3.655%, and in site authentication method shows an absolute error of simulation of 22.667 MJ m-2, while relative error of 4.867%.

Key words: rugged terrain, global solar radiation, distributed model, Digital Elevation Model, the Yangtze River Basin

CLC Number: 

  • P422.1