DOI: 10.1002/2016JD025210
论文题名: Impacts of urbanization on summer climate in China: An assessment with coupled land-atmospheric modeling
作者: Cao Q. ; Yu D. ; Georgescu M. ; Wu J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 18 起始页码: 10505
结束页码: 10521
语种: 英语
英文关键词: China
; climate
; urban expansion
; urban warming
; WRF
Scopus关键词: air-soil interaction
; climate effect
; environmental assessment
; heat island
; mixing ratio
; nature-society relations
; summer
; urban sprawl
; water vapor
; weather forecasting
; Beijing [China]
; China
; Guangdong
; Hebei
; Tianjin
; Yangtze Basin
; Zhujiang Delta
英文摘要: China has experienced unprecedented urbanization since the 1980s, resulting in substantial climatic effects from local cities to broad regions. Using the Weather Research and Forecasting model dynamically coupled to an urban canopy model, we quantified the summertime climate effects of urban expansion in China's most rapidly urbanizing regions: Beijing-Tianjin-Hebei (BTH), Yangtze River Delta (YRD), and Pearl River Delta (PRD). High-resolution landscape data of each urban agglomeration for 1988, 2000, and 2010 were used for simulations. Our results indicated summertime urban warming of 0.85°C for BTH, 0.78°C for YRD, and 0.57°C for PRD, which was substantially greater than previous estimates. Peak summer warming for BTH, YRD, and PRD was 1.5°C, 1°C, and 0.8°C, respectively. In contrast, the loss of moisture was greatest in PRD, with maximum reduction in 2 m water vapor mixing ratio close to 1 g/kg, followed by YRD and BTH with local peak humidity deficits reaching 0.8 g/kg and 0.6 g/kg, respectively. Our results were in better agreement with observations than prior studies because of the usage of high-resolution landscape data and the inclusion of key land-atmospheric interactions. Our study also demonstrated that the warming impacts of polycentric urban forms were less intense but more extensive in space, whereas large concentrated urban aggregations produced much stronger but localized warming effects. These findings provide critical knowledge that improves our understanding of urban-atmospheric interactions, with important implications for urban landscape management and planning to alleviate the negative impacts of urban heat islands. ©2016. American Geophysical Union. All Rights Reserved. 资助项目: DMS-1419593
; EAR-1204774
; SES-1520803
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62848
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Center for Human-Environment System Sustainability, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ, United States; School of Life Sciences and School of Sustainability, Arizona State University, Tempe, AZ, United States
Recommended Citation:
Cao Q.,Yu D.,Georgescu M.,et al. Impacts of urbanization on summer climate in China: An assessment with coupled land-atmospheric modeling[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(18)