气候变化领域集成服务门户(CCPortal): Physical Determinants and Reduced Models of the Rapid Cooling of Urban Surfaces During Rainfall

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DOI	10.1029/2018MS001528
	Physical Determinants and Reduced Models of the Rapid Cooling of Urban Surfaces During Rainfall
	Omidvar H.; Bou-Zeid E.; Chiaramonte M.
发表日期	2019
ISSN	19422466
起始页码	1364
结束页码	1380
卷号	11 期号:5
英文摘要	Using a detailed model, sensitivity analyses are conducted to identify the leading physical determinants and heat fluxes that control energy exchange between surface runoff and urban pavements during rainfall. These analyses confirm that pavement characteristics, such as albedo and thermal effusivity, strongly influence the initial temperature of the pavement before rain starts. Moreover, this sensitivity propagates to the runoff and pavement temperatures as well as to sensible heat and evaporation fluxes during and after rainfall. Heat transfer inside the runoff and pavement during rainfall is also very sensitive to the rain temperature and is the leading process in surface cooling (the classically important sensible and latent heat fluxes to the atmosphere are minor contributors). Finally, based on the findings from the sensitivity analyses, using a bulk energy approach, a reduced version of the full model is proposed. This simple model uses the spatially averaged temperatures of the runoff and pavement and can predict their temperatures and the associated energy fluxes almost as accurately as the full model. The reduced model has the added advantages of computational efficiency and simplicity of implementation in coarse earth system models. ©2019. The Authors.
英文关键词	earth surface temperature; rain temperature; runoff-pavement heat transfer; surface cooling; urban pavements
语种	英语
scopus关键词	Computational efficiency; Cooling; Heat flux; Pavements; Rain; Runoff; Sensitivity analysis; Earth surface temperature; Earth system model; Initial temperatures; Pavement temperature; Sensible and latent heat fluxes; Surface cooling; Thermal effusivity; Urban pavement; Atmospheric temperature; climate modeling; cooling; heat flux; heat transfer; pavement; physical analysis; rainfall; runoff; surface temperature; urban area
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156914
作者单位	Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Omidvar H.,Bou-Zeid E.,Chiaramonte M.. Physical Determinants and Reduced Models of the Rapid Cooling of Urban Surfaces During Rainfall[J],2019,11(5).
APA	Omidvar H.,Bou-Zeid E.,&Chiaramonte M..(2019).Physical Determinants and Reduced Models of the Rapid Cooling of Urban Surfaces During Rainfall.Journal of Advances in Modeling Earth Systems,11(5).
MLA	Omidvar H.,et al."Physical Determinants and Reduced Models of the Rapid Cooling of Urban Surfaces During Rainfall".Journal of Advances in Modeling Earth Systems 11.5(2019).