气候变化领域集成服务门户(CCPortal): The contributions of individual factors to the oasis cold island effect intensity in the Heihe River Basin

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DOI	10.1016/j.agrformet.2021.108706
	The contributions of individual factors to the oasis cold island effect intensity in the Heihe River Basin
	Zhou, Yanzhao; Liao, Weilin; Li, Xin
通讯作者	Li, X (通讯作者)
发表日期	2022
ISSN	0168-1923
EISSN	1873-2240
卷号	312
英文摘要	The oasis cold island effect, a common phenomenon whereby surface temperatures in oases are lower than those in surrounding desert areas, profoundly impacts the lives of oasis residents. Although previous studies have verified the importance of the Bowen ratio regarding the oasis cold island effect intensity during summer, the contributions of other factors (e.g., aerodynamic resistance) remain to be investigated in more detail. Here, considering two paired micrometeorological observation sites (i.e., one site in an oasis and an adjacent site in a desert area) and two attribution methods (i.e., the intrinsic biophysical mechanism (IBM) and two-resistance mechanism (TRM)), we quantitatively apportion the daytime oasis cold island effect intensity to atmospheric factors (e.g., incoming shortwave radiation, incoming longwave radiation, air temperature, pressure, and specific humidity) and surface factors (e.g., heat storage, aerodynamic resistance, surface resistance, surface albedo and emissivity). The results indicate that both methods can be applied to model the oasis cold island effect intensity accurately, and these methods are insensitive to a relatively small energy imbalance (e.g., similar to 14% in our study). Furthermore, both methods reveal that in summer, the surface resistance and aerodynamic resistance are the two key factors that control the oasis cold island effect intensity, whereas in winter, the aerodynamic resistance (i.e., convection efficiency) becomes the dominant contributor. This highlights the appreciable role of the aerodynamic resistance in the oasis cold island effect intensity. Moreover, from a long-term sustainability viewpoint, we argue that an increase in convection efficiency (i.e., indigenous higher-drought tolerance vegetation and more shelterbelts) across the oasis is one important way to maintain and enhance the oasis cold island effect intensity in the future.
关键词	ENERGY-BALANCE CLOSURE SURFACE-TEMPERATURE EDDY-COVARIANCE ARID REGIONS LAND-USE ATTRIBUTION CLIMATE DESERT SCALE AREA
英文关键词	Oasis cold island effect; Surface resistance; Aerodynamic resistance; Intrinsic biophysical mechanism (IBM) method; Two-resistance mechanism method (TRM); Heihe River Basin
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000717364400005
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260580
推荐引用方式 GB/T 7714	Zhou, Yanzhao,Liao, Weilin,Li, Xin. The contributions of individual factors to the oasis cold island effect intensity in the Heihe River Basin[J]. 中国科学院青藏高原研究所,2022,312.
APA	Zhou, Yanzhao,Liao, Weilin,&Li, Xin.(2022).The contributions of individual factors to the oasis cold island effect intensity in the Heihe River Basin.AGRICULTURAL AND FOREST METEOROLOGY,312.
MLA	Zhou, Yanzhao,et al."The contributions of individual factors to the oasis cold island effect intensity in the Heihe River Basin".AGRICULTURAL AND FOREST METEOROLOGY 312(2022).