| DOI: | 10.1175/JCLI-D-11-00098.1
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| Scopus记录号: | 2-s2.0-84856829196
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| 论文题名: | Contrasts between Urban and rural climate in CCSM4 CMIP5 climate change scenarios |
| 作者: | Oleson K.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2012
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| 卷: | 25, 期:5 | | 起始页码: | 1390
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| 结束页码: | 1412
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| 语种: | 英语
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| Scopus关键词: | Atmosphere-land interaction
; Heat islands
; Land surface
; Land surface models
; Urban meteorology
; Climate change
; Climate models
; Computer simulation
; Rural areas
; Soil moisture
; Atmospheric temperature
; air temperature
; climate change
; climate modeling
; computer simulation
; heat island
; land surface
; nature-society relations
; rural atmosphere
; soil moisture
; summer
; urban climate
; Europe
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| 英文摘要: | A new parameterization of urban areas in the Community Climate System Model version 4 (CCSM4) allows for simulation of temperature in cities where most of the global population lives. CCSM4 Coupled Model Intercomparison Project phase 5 (CMIP5) simulations [Representative Concentration Pathway (RCP) 2.6, 4.5, and 8.5] are analyzed to examine how urban and rural areas might respond differently to changes in climate. The urban heat island (UHI), defined as the urban minus rural air temperature, is used as a metric. The average UHI at the end of the twenty-first century is similar to present day in RCP2.6 and RCP4.5, but decreases in RCP8.5. Both the daytime and nocturnal UHIs decrease in RCP8.5, but the decrease in the daytime UHI is larger and more uniform across regions and seasons than in the nocturnal UHI. This is caused by changes in evaporation that warm the rural surface more than the urban. There is significant spatial and seasonal variability in the response of the nocturnal UHI caused mainly by changes in the rural surface. In Europe, the response to climate change of rural leaf-stem area in summer and clouds and rural soil moisture in winter explains the majority of this variability. Climate change increases the number of warm nights in urban areas substantially more than in rural areas. These results provide evidence that urban and rural areas respond differently to climate change. Thus, the unique aspects of the urban environment should be considered when making climate change projections, particularly since the global population is becoming increasingly urbanized. © 2012 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/52494
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | National Center for Atmospheric Research, Boulder, CO, United States
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| Recommended Citation: | |
Oleson K.. Contrasts between Urban and rural climate in CCSM4 CMIP5 climate change scenarios[J]. Journal of Climate,2012-01-01,25(5)
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