干旱区生态环境知识资源中心(Arid): The influence of soil moisture and solar altitude on surface spectral albedo in arid area

Arid

DOI	10.1088/1748-9326/ab6ae2
	The influence of soil moisture and solar altitude on surface spectral albedo in arid area
	Yang, Jiaxi 1; Li, Zhenchao 1; Zhai, Panmao 3; Zhao, Yanyan 1,2; Gao, Xiaoqing 1
通讯作者	Gao, Xiaoqing
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2020
卷号	15 期号:3
英文摘要	Using data collected from a specially designed experiment at the Dunhuang Station (40 degrees 10 ' N, 94 degrees 31 ' E, 1150 m) from September 2017 to September 2018, we have characterized the influences of soil moisture and solar altitude on surface spectral albedo in an arid area. The specific settings of our experiment allowed us to minimize the influences of underlying surface, cloud cover, aerosol and weather conditions, and thus highlight the influence of soil moisture and solar altitude. During the timespan of the experiment, we observed the annual mean surface albedo of global radiation (GR), ultraviolet radiation (UV), visible radiation (VIS) and near-infrared radiation (NIR) to be 0.24, 0.11, 0.24 and 0.25. A significantly negative linear correlation between surface albedo and soil moisture was identified, with the correlation coefficients between GR, UV, VIS, NIR and soil moisture being -0.68, -0.75, -0.70 and -0.61. In addition, we identified an exponential relationship between surface albedo and solar altitude. The exponential regression coefficients are -0.21, -0.077, -0.53 and -0.21, respectively. From these analyses, we derived a new two-factor parametric formula for depicting the influence of soil moisture and solar altitude on surface spectral albedo. Using observation data, we demonstrate that the formula recapitulates the real-world relationship between soil moisture, solar altitude and surface spectral albedo with little deviation. These findings may help us gain a deeper understanding of improving land surface parameterizations and have potential implications for solar energy research and applications.
英文关键词	surface spectral albedo soil moisture solar altitude
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000521176600001
WOS关键词	THERMAL PARAMETERS ; LAND-SURFACE ; NARROW-BAND ; RADIATION ; VARIABILITY ; GOBI
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314451
作者单位	1.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.China Meteorol Adm, Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yang, Jiaxi,Li, Zhenchao,Zhai, Panmao,et al. The influence of soil moisture and solar altitude on surface spectral albedo in arid area[J],2020,15(3).
APA	Yang, Jiaxi,Li, Zhenchao,Zhai, Panmao,Zhao, Yanyan,&Gao, Xiaoqing.(2020).The influence of soil moisture and solar altitude on surface spectral albedo in arid area.ENVIRONMENTAL RESEARCH LETTERS,15(3).
MLA	Yang, Jiaxi,et al."The influence of soil moisture and solar altitude on surface spectral albedo in arid area".ENVIRONMENTAL RESEARCH LETTERS 15.3(2020).