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| 复杂地形下黑河流域的太阳辐射计算 | |
| 引用本文： | 田辉,文军,马耀明,苏中波,韦志刚,王介民,张堂堂,刘蓉,胡晓.复杂地形下黑河流域的太阳辐射计算[J].高原气象,2007,26(4):666-676. |
| 作者姓名： | 田辉 文军 马耀明 苏中波 韦志刚 王介民 张堂堂 刘蓉 胡晓 |
| 作者单位： | 1. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 2. 中国科学院,青藏高原研究所,北京,100085 3. International Institute for Geo-Information Science and Earth Observation ITC Enschede 7500AA,the Netherlands |
| 基金项目： | 中国科学院知识创新工程项目 |
| 摘 要： | 基于数字高程模型(DEM)数据,在充分考虑了地形因子对太阳直接辐射和散射辐射的影响后,实际计算了起伏地形下黑河流域的太阳辐射。在忽略地表和大气之间的多次反射后,地表太阳总辐射计为三项:按起伏坡面上实际入射角考虑的太阳直接辐射、经过下垫面天空视角因子订正的坡面天空散射辐射和考虑周围地形反射效应的附加辐射。计算结果表明:局地地形起伏对太阳直接辐射、总辐射空间分布的影响非常强烈,使得复杂地形下不同坡向间总辐射和直接辐射平均计算差额十分显著,且太阳天顶角从较小增大至中等大小时,这两种平均计算差额均加大一倍多;在较小和中等大小太阳天顶角下,不同坡向间总辐射平均计算差额,均较相同条件下直接辐射平均计算差额为小,这是因为总辐射还包括了天空漫射和邻近地形反射辐射因子,这两个因子和坡面上太阳入射方位的变化共同影响地表入射太阳辐射;起伏地形主要使得太阳辐射在局地区域内背阴、向阳坡向间发生显著的重新分配。因此,在复杂地形地区进行太阳辐射计算时必须考虑地形的影响。 |
| 关 键 词： | 黑河流域 复杂地形 数字高程 太阳辐射 |
| 文章编号： | 1000-0534（2007）04-0666-11 |
| 修稿时间： | 2007-01-29 |
Estimation of Solar Radiation over the Complex Terrain of the Heihe River Basin |
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| TIAN Hui,WEN Jun,MA Yao-ming,SU Zhong-bo,WEI Zhi-gang,WANG Jie-min,ZHANG Tang-tang,LIU Rong,HU Xiao.Estimation of Solar Radiation over the Complex Terrain of the Heihe River Basin[J].Plateau Meteorology,2007,26(4):666-676. | |
| Authors: | TIAN Hui WEN Jun MA Yao-ming SU Zhong-bo WEI Zhi-gang WANG Jie-min ZHANG Tang-tang LIU Rong HU Xiao |
| Institution: | 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Institute of Tibet Plateau Research, Chinese Academy of Sciences, Beijing 100085, China; 3. International Institute for Geo-lnformation Science and Earth Observation ITC Enschede 7500AA, the Netherlands |
| Abstract: | The global radiation over the complex terrain of the Heihe river basin is calculated with considering of the terrain effects on the direct and diffuse solar radiation.With neglect of multiple reflection between the ground surface and the atmosphere layer,the land surface global solar radiation is determined by three terms: The direct solar radiation which is altered by the incidence angle on the actual undulating slope,the downwelling diffuse solar radiation adjusted by the slope overlying sky factor and the additional radiation from the adjacent terrain reflectance.The result shows that there is a strong effect of the undulation of the complex terrain on the spatial distribution of the incoming surface solar radiation.Therefore,the terrain factor is essential on determining the solar radiation over the complex terrain. |
| Keywords: | Heihe river basin Complex terrain Digital elevation model Solar radiation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |