Modeling the radiation balance of different urban underlying surfaces

作     者：CUI YaoPing LIU JiYuan HU YunFeng WANG JunBang KUANG WenHui 

作者机构：Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Chinese Science Bulletin》 (Chinese Science Bulletin)

年 卷 期：2012年第57卷第9期

页      面：1046-1054页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：supported by the National Basic Research Program of China (2010CB950902) the National Natural Science Foundation of China (40971223 and 40901224) the Major Program for the Fundamental Research of the Chinese Academy of Sciences (KZCX2-EW-306) 

主　　题：辐射平衡 城市化 下垫面 土地覆盖类型 建模 模拟数据 平衡模型 参数化方案 

摘      要：An urban net all-wave radiation parameterization scheme is evaluated using annual datasets for 2010 recorded at a Beijing urban observation *** statistical relationship between observed data and simulation data of net radiation has a correlation coefficient of 0.98 and model efficiency of ***,it can be used to simulate the radiation balance of *** study analyzes the variation in the radiation balance for different underlying *** simulate radiation balance differences,we set four pure land-cover types(forest,grass,roads,and buildings).Keeping all other conditions inputted unchanged,we model the radiation balance by changing the land-cover *** results show that the effects of different underlying surfaces on radiation differ,and that there is much upward long-wave radiation,accounting for 84.3% of the total radiation energy falling incident on the land *** annual averages of net radiation for the four land-cover types are in the range of 38.2-53.4 W/*** net radiation of the grass surface is minimal while that of the roads surface is ***,with urbanization the net radiation values of common types of land-cover change,such as conversion from forest to roads,grass to roads,and grass to buildings,all have increasing trends,indicating that net radiation usually increases with urban sprawl.