Simulating the Regional Impacts of Urbanization and Anthropogenic Heat Release on Climate across China
Simulating the Regional Impacts of Urbanization and Anthropogenic Heat Release on Climate across China
复制标题
模拟中国城市化和人为放热对气候的区域影响
DOI：
10.1175/jcli-d-11-00333.1
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发表时间：
2012-10-15
影响因子：
4.9
通讯作者：
Liu, Yong-He
中科院分区：
文献类型：
--
作者：
Feng, Jin-Ming;Wang, Yong-Li;Liu, Yong-He
随着经济的发展和城镇化的加快，中国的城市人口一直在快速增长。而城市大规模能源消耗释放的人为热量预计将是影响气候的重要因素。本文采用天气研究与预报(WRF)模式和城市冠层模式(UCM)相结合的方法，模拟了城市化引起的下垫面变化(USCU)和人为热释放(AHR)两种情景下区域气候变化。从2006年12月到2008年12月进行了三次实验。关于USCU的。地表反照率和土壤有效水显著降低。随着A H R的加入，这两种情况都会导致中国大部分地区的地表温度上升。尤其是在长三角城市群地区。USCU和A-R的结合可以导致地面气温上升2摄氏度。在不考虑任何额外热源的情况下，杉木对冬季地面气温的影响大于USCU的影响。但在夏季，情况正好相反。USCU和AHR的结合导致了地表能量收支的变化。它们都增加了显热通量。但USCU显著降低了潜热通量。AHR使潜热通量略有增加。尽管如此，在这两种情景的影响下。一些地区的降水量增加，特别是京津冀地区，而其他地区的降水量减少，最明显的是长江三角洲。
Together with economic development and accelerated urbanization, the urban population in China has been increasing rapidly. and anthropogenic heat released by large-scale energy consumption in cities is expected to be a vital factor affecting the climate. In this paper, the Weather Research and Forecasting (WRF) model coupled with the Urban Canopy Model (UCM) is employed to simulate the regional impacts on climate under the two scenarios: the underlying surface changes due to urbanization (USCU) and anthropogenic heat release (AHR). Three experiments were performed from December 2006 to December 2008. With respect to the USCU. the surface albedo and the available surface soil water decrease markedly. With the inclusion of A H R. the two scenarios give rise to increased surface temperatures over most areas of China. Especially in the urban agglomeration area of the Yangtze River delta. the combination of USCU and A R could result in an increase of 2 degrees C in the surface air temperature. The influence of A FIR on surface air temperature in winter is greater than the influence of USCU without considering any extra sources of heat. but the opposite is found in summer. The combination of USCU and AHR leads to changes in the surface energy budget. They both increase sensible heat flux. but USCU decreases latent heat flux significantly. and AHR increases latent heat flux slightly. Nevertheless, under the influence of these two scenarios. the precipitation increases in some areas, especially in the Beijing-Tianjin-Hebei region, while it decreases in other areas, most notably the Yangtze River delta.