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Modeling the radiation balance of different urban underlying surfaces
Cui YaoPing(崔耀平); Liu, JY; Hu, YF; Wang, JB; Kuang, WH
Corresponding AuthorKuang, WH
AbstractAn urban net all-wave radiation parameterization scheme is evaluated using annual datasets for 2010 recorded at a Beijing urban observation site. The statistical relationship between observed data and simulation data of net radiation has a correlation coefficient of 0.98 and model efficiency of 0.93. Therefore, it can be used to simulate the radiation balance of Beijing. This study analyzes the variation in the radiation balance for different underlying surfaces. To 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 type. The 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 surface. The annual averages of net radiation for the four land-cover types are in the range of 38.2-53.4 W/m(2). The net radiation of the grass surface is minimal while that of the roads surface is maximal. Additionally, 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.
KeywordNet All-wave Radiation Parameterization Net Radiation Urban Heat Island Energy Balance Climate Change Beijing
Indexed BySCI
Funding OrganizationNational Basic Research Program of China 2010CB950902;National Natural Science Foundation of China 40971223 40901224;Chinese Academy of Sciences KZCX2-EW-306
Document Type期刊论文
Corresponding AuthorKuang, WH
Recommended Citation
GB/T 7714
Cui YaoPing,Liu, JY,Hu, YF,et al. Modeling the radiation balance of different urban underlying surfaces[J]. CHINESE SCIENCE BULLETIN,2012,57(9):1046-1054.
APA Cui YaoPing,Liu, JY,Hu, YF,Wang, JB,&Kuang, WH.(2012).Modeling the radiation balance of different urban underlying surfaces.CHINESE SCIENCE BULLETIN,57(9),1046-1054.
MLA Cui YaoPing,et al."Modeling the radiation balance of different urban underlying surfaces".CHINESE SCIENCE BULLETIN 57.9(2012):1046-1054.
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