Examining the impacts of urbanization on surface radiation using Landsat imagery

doi:10.1080/15481603.2018.1508931

	Examining the impacts of urbanization on surface radiation using Landsat imagery
	Kuang, Wenhui 1; Liu, Ailin 1,2; Dou, Yinyin 3; Li, Guiying 4,5; Lu, Dengsheng 4,5
刊名	GISCIENCE & REMOTE SENSING
	2019-04-03
卷号	56 期号:3 页码:462-484
关键词	radiation budget shortwave radiation longwave radiation net radiation atmospheric transmittance Landsat
ISSN号	1548-1603
DOI	10.1080/15481603.2018.1508931
通讯作者	Kuang, Wenhui(kuangwh@igsnrr.ac.cn) ; Lu, Dengsheng(dengshenglu@gmail.com)
英文摘要	Metropolitan Beijing is facing many environmental problems such as haze and urban heat island due to the rapid urbanization. Surface shortwave, longwave, and net radiations are key components of the surface-atmosphere radiation budget. Since megacities are affected by the thermal radiation of complex landscape structures and atmospheric environments, quantitative and spatially explicit retrieval from remotely sensed data remains a challenge. We collected the surface radiation fluxes from seven fixed sites representing different land-use types to calibrate the local parameters for remotely sensed retrieval of net radiation. We proposed a remote sensing-based surface radiation retrieval method by embedding the underlying land covers and integrating the observational data. The improved method is feasible to accurately retrieve surface radiation and delineate spatial characteristics in metropolitan areas. The accuracy evaluation indicated that the difference between remotely sensed and in situ observed net radiation ranged within 0 similar to +/- 40 W center dot m(-2). The root mean squared error of the estimated net surface radiation was 32.71 W center dot m(-2). The strongly spatial heterogeneity of surface radiation components in metropolitan Beijing was closely related to land-cover patterns from urban area to outskirts. We also found that the surface net radiation had a decreasing trend from 1984 to 2014, and the net radiation in the urban area was lower than that in the outskirts. According to the surface radiation budgets, urbanization resulted in the cooling effect in net radiation flux in the daytime, which was stemmed from low atmospheric transmittances from massive aerosol concentration and high surface albedo from light building materials.
资助项目	Key Project of Beijing Natural Science Foundation[8171004] ; National Natural Science Foundation of China[41371408]
WOS关键词	SPATIOTEMPORAL CHARACTERISTICS ; FLUX PARAMETERIZATIONS ; LONGWAVE RADIATION ; DRIVING FORCES ; BOUNDARY-LAYER ; ENERGY BALANCE ; NET-RADIATION ; URBAN ; TEMPERATURE ; COVER
WOS研究方向	Physical Geography ; Remote Sensing
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000457866600007
资助机构	Key Project of Beijing Natural Science Foundation ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/49947]
专题	中国科学院地理科学与资源研究所
通讯作者	Kuang, Wenhui; Lu, Dengsheng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Beijing Normal Univ, Ctr Human Environm Syst Sustainabil, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 4.Fujian Normal Univ, Fujian Prov Key Lab Subtrop Resources & Environm, Fuzhou 350007, Fujian, Peoples R China 5.Fujian Normal Univ, Sch Geog Sci, Fuzhou 350007, Fujian, Peoples R China
推荐引用方式 GB/T 7714	Kuang, Wenhui,Liu, Ailin,Dou, Yinyin,et al. Examining the impacts of urbanization on surface radiation using Landsat imagery[J]. GISCIENCE & REMOTE SENSING,2019,56(3):462-484.
APA	Kuang, Wenhui,Liu, Ailin,Dou, Yinyin,Li, Guiying,&Lu, Dengsheng.(2019).Examining the impacts of urbanization on surface radiation using Landsat imagery.GISCIENCE & REMOTE SENSING,56(3),462-484.
MLA	Kuang, Wenhui,et al."Examining the impacts of urbanization on surface radiation using Landsat imagery".GISCIENCE & REMOTE SENSING 56.3(2019):462-484.