QQ客服 官方微博 反馈留言

	Modeling the climatic effects of urbanization in the Beijing-Tianjin-Hebei metropolitan area
	Wang M. N. ; Zhang X. Z. ; Yan X. D.
	2013
关键词	urban heat-island china impacts precipitation temperature
英文摘要	In this analysis, the weather research and forecasting model coupled with a single-layer urban canopy model is used to simulate the climatic impacts of urbanization in the Beijing-Tianjin-Hebei metropolitan area, which has experienced significant expansion in its urban areas. Two cases examining current landscapes and the sensitivity test of urban areas replaced by cropland have been carried out to explore the changes in the surface air and atmospheric boundary structure. The impact of urbanization on annual mean surface air temperature has been found to be more than 1 A degrees C in urban areas, and the maximum difference is almost 2 A degrees C. The change in near-surface level temperature is most pronounced in winter, but the area influenced by urbanization is slightly larger in summer. The annual mean water vapor mixing ratio and wind speed are both reduced in the urban area. The effect of urbanization can only heat the temperature inside the urban boundary layer, below 850 hPa. The modeling results also indicate that the underlying surface thermal forces induced by the "urban heat island" effect enhance vertical air movement and engenders a convergence zone over urban areas. The convergence at low level together with the moisture increases in the layer between 850 and 700 hPa triggered the increase of convective precipitation.
出处	Theoretical and Applied Climatology
卷	113
期	3-4
页	377-385
收录类别	SCI
语种	英语
ISSN号	0177-798X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30198]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang M. N.,Zhang X. Z.,Yan X. D.. Modeling the climatic effects of urbanization in the Beijing-Tianjin-Hebei metropolitan area. 2013.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。