干旱区生态环境知识资源中心(Arid): Warm Island Effect in the Badain Jaran Desert Lake Group Region Inferred from the Accumulated Temperature

Arid

DOI	10.3390/atmos11020153
	Warm Island Effect in the Badain Jaran Desert Lake Group Region Inferred from the Accumulated Temperature
	Liang, Xiaoyan; Zhao, Liqiang; Niu, Zhenmin; Xu, Xingbin; Meng, Nan; Wang, Naiang
通讯作者	Wang, Naiang
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2020
卷号	11 期号:2
英文摘要	The Badain Jaran Desert (BJD) is characterized by the coexistence of over 110 perennial lakes and thousands of megadunes in its southeast part. Unlike the cold island effect, we found a special phenomenon of the warm island effect in the lake group region of the BJD. However, the concept and formation mechanism remains unclear. In this study, based on observations of land surface processes in the area, we first used the daily mean temperature from 23 automated meteorological stations from 2010 to 2017 to calculate the mean daily temperature (T) >= 0 degrees C, T >= 10 degrees C accumulated temperature and negative accumulated temperature. Furthermore, using the net radiation from two eddy covariance measurement systems, characteristics of the net radiation between the lake and megadunes were analyzed. When comparing observed data in the lake group region to surrounding areas, accumulated temperature from all three meteorological stations in the lake group region were higher; the duration days of T >= 0 degrees C and T >= 10 degrees C were longer, whereas duration days of negative accumulated temperature were shorter. In addition, the initial dates for T >= 0 degrees C and T >= 10 degrees C accumulated temperature were earlier, whereas the end dates were delayed. Variations in heat were observed between stations in the lake group region that may be reflective of microclimate environments between lakes. The authors relate warm island formation in the BJD lake group region to (1) the heat carried by groundwater recharge to the desert lake groups has a great impact on the local temperature. (2) Net heat radiation to the atmosphere through sensible heat flux owing to sparse vegetation in the desert areas. Hence, heat resources are richer in the lake group region. This study aims to improve our understanding of the warm island effect from a comprehensive analysis of its intensity and distribution pattern around the lake group region as compared to its surroundings. In addition, the results from this study will provide a scientific basis for determining the source of lake water in the BJD.
英文关键词	Badain Jaran Desert lake group region warm island effect field observation land surface processes
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000519238800023
WOS关键词	CLIMATE-CHANGE ; RECHARGE SOURCES ; WATER-VAPOR ; GROUNDWATER ; DESERTIFICATION ; MAINTAINS ; EVOLUTION ; EVENTS ; TRENDS ; ENERGY
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314124
作者单位	Lanzhou Univ, Coll Earth & Environm Sci, Ctr Glacier & Desert Res, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liang, Xiaoyan,Zhao, Liqiang,Niu, Zhenmin,et al. Warm Island Effect in the Badain Jaran Desert Lake Group Region Inferred from the Accumulated Temperature[J]. 兰州大学,2020,11(2).
APA	Liang, Xiaoyan,Zhao, Liqiang,Niu, Zhenmin,Xu, Xingbin,Meng, Nan,&Wang, Naiang.(2020).Warm Island Effect in the Badain Jaran Desert Lake Group Region Inferred from the Accumulated Temperature.ATMOSPHERE,11(2).
MLA	Liang, Xiaoyan,et al."Warm Island Effect in the Badain Jaran Desert Lake Group Region Inferred from the Accumulated Temperature".ATMOSPHERE 11.2(2020).