干旱区生态环境知识资源中心(Arid): Eddy covariance measurements of water vapor and energy flux over a lake in the Badain Jaran Desert,China

Arid

	Eddy covariance measurements of water vapor and energy flux over a lake in the Badain Jaran Desert,China
	Sun Jie; Hu Wenfeng; Wang Nai'ang; Zhao Liqiang; An Ran; Ning Kai; Zhang Xunhe
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2018
卷号	10 期号:4 页码:517-533
英文摘要	Exploring the surface energy exchange between atmosphere and water bodies is essential to gain a quantitative understanding of regional climate change,especially for the lakes in the desert.In this study,measurements of energy flux and water vapor were performed over a lake in the Badain Jaran Desert,China from March 2012 to March 2013.The studied lake had about a 2-month frozen period(December and January) and a 10-month open-water period(February-November).Latent heat flux(LE) and sensible heat flux(Hs) acquired using the eddy covariance technique were argued by measurements of longwave and shortwave radiation.Both fluxes of longwave and shortwave radiation showed seasonal dynamics and daily fluctuations during the study period.The reflected solar radiation was much higher in winter than in other seasons.LE exhibited diurnal and seasonal variations.On a daily scale,LE was low in the morning and peaked in the afternoon.From spring(April) to winter(January),the diurnal amplitude of LE decreased slowly.LE was the dominant heat flux throughout the year and consumed most of the energy from the lake.Generally speaking,LE was mostly affected by changes in the ambient wind speed,while Hs was primarily affected by the product of water-air temperature difference and wind speed.The diurnal LE and Hs were negatively correlated in the open-water period.The variations in Hs and LE over the lake were differed from those on the nearby land surface.The mean evaporation rate on the lake was about 4.0 mm/d over the entire year,and the cumulative annual evaporation rate was 1445 mm/a.The cumulative annual evaporation was 10 times larger than the cumulative annual precipitation.Furthermore,the average evaporation rates over the frozen period and open-water period were approximately 0.6 and 5.0 mm/d,respectively.These results can be used to analyze the water balance and quantify the source of lake water in the Badain Jaran Desert.
英文关键词	eddy covariance energy flux radiation evaporation precipitation lake Badain Jaran Desert
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6283195
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335975
作者单位	Sun Jie, College of Earth and Environmental Sciences,Center for Desert and Arid Region Research,Lanzhou University, Lanzhou, Gansu 730000, China.; Wang Nai'ang, College of Earth and Environmental Sciences,Center for Desert and Arid Region Research,Lanzhou University, Lanzhou, Gansu 730000, China.; Zhao Liqiang, College of Earth and Environmental Sciences,Center for Desert and Arid Region Research,Lanzhou University, Lanzhou, Gansu 730000, China.; An Ran, College of Earth and Environmental Sciences,Center for Desert and Arid Region Research,Lanzhou University, Lanzhou, Gansu 730000, China.; Ning Kai, College of Earth and Environmental Sciences,Center for Desert and Arid Region Research,Lanzhou University, Lanzhou, Gansu 730000, China.; Zhang Xunhe, College of Earth and Environmental Sciences,Center for Desert and Arid Region Research,Lanzhou University, Lanzhou, Gansu 730000, China.; Hu Wenfeng, College of Earth and Environmental Sciences,Center for Desert and Arid Region Research,Lanzhou University;;Cente...
推荐引用方式 GB/T 7714	Sun Jie,Hu Wenfeng,Wang Nai'ang,et al. Eddy covariance measurements of water vapor and energy flux over a lake in the Badain Jaran Desert,China[J],2018,10(4):517-533.
APA	Sun Jie.,Hu Wenfeng.,Wang Nai'ang.,Zhao Liqiang.,An Ran.,...&Zhang Xunhe.(2018).Eddy covariance measurements of water vapor and energy flux over a lake in the Badain Jaran Desert,China.Journal of Arid Land,10(4),517-533.
MLA	Sun Jie,et al."Eddy covariance measurements of water vapor and energy flux over a lake in the Badain Jaran Desert,China".Journal of Arid Land 10.4(2018):517-533.