干旱区生态环境知识资源中心(Arid): Response of Freezing/Thawing Indexes to the Wetting Trend under Warming Climate Conditions over the Qinghai -Tibetan Plateau during 1961-2010: A Numerical Simulation

Arid

DOI	10.1007/s00376-022-2109-z
	Response of Freezing/Thawing Indexes to the Wetting Trend under Warming Climate Conditions over the Qinghai -Tibetan Plateau during 1961-2010: A Numerical Simulation
	Fang, Xuewei; Li, Zhi; Cheng, Chen; Fraedrich, Klaus; Wang, Anqi; Chen, Yihui; Xu, Yige; Lyu, Shihua
通讯作者	Fang, XW
来源期刊	ADVANCES IN ATMOSPHERIC SCIENCES
ISSN	0256-1530
EISSN	1861-9533
出版年	2023
卷号	40 期号:2 页码:211-222
英文摘要	Since the 1990s, the Qinghai-Tibetan Plateau (QTP) has experienced a strikingly warming and wetter climate that alters the thermal and hydrological properties of frozen ground. A positive correlation between the warming and thermal degradation in permafrost or seasonally frozen ground (SFG) has long been recognized. Still, a predictive relationship between historical wetting under warming climate conditions and frozen ground has not yet been well demonstrated, despite the expectation that it will become even more important because precipitation over the QTP has been projected to increase continuously in the near future. This study investigates the response of the thermal regime to historical wetting in both permafrost and SFG areas and examines their relationships separately using the Community Land Surface Model version 4.5. Results show that wetting before the 1990s across the QTP mainly cooled the permafrost body in the arid and semiarid zones, with significant correlation coefficients of 0.60 and 0.48, respectively. Precipitation increased continually at the rate of 6.16 mm decade(-1) in the arid zone after the 1990s but had a contrasting warming effect on permafrost through a significant shortening of the thawing duration within the active layer. However, diminished rainfall in the humid zone after the 1990s also significantly extended the thawing duration of SFG. The relationship between the ground thawing index and precipitation was significantly negatively correlated (-0.75). The dual effects of wetting on the thermal dynamics of the QTP are becoming critical because of the projected increases in future precipitation.
英文关键词	freezing/thawing indexes numerical modeling wetting process frozen ground Qinghai-Tibetan Plateau
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000897493100004
WOS关键词	PERMAFROST ; TEMPERATURE ; DYNAMICS ; DATASET
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394976
推荐引用方式 GB/T 7714	Fang, Xuewei,Li, Zhi,Cheng, Chen,et al. Response of Freezing/Thawing Indexes to the Wetting Trend under Warming Climate Conditions over the Qinghai -Tibetan Plateau during 1961-2010: A Numerical Simulation[J],2023,40(2):211-222.
APA	Fang, Xuewei.,Li, Zhi.,Cheng, Chen.,Fraedrich, Klaus.,Wang, Anqi.,...&Lyu, Shihua.(2023).Response of Freezing/Thawing Indexes to the Wetting Trend under Warming Climate Conditions over the Qinghai -Tibetan Plateau during 1961-2010: A Numerical Simulation.ADVANCES IN ATMOSPHERIC SCIENCES,40(2),211-222.
MLA	Fang, Xuewei,et al."Response of Freezing/Thawing Indexes to the Wetting Trend under Warming Climate Conditions over the Qinghai -Tibetan Plateau during 1961-2010: A Numerical Simulation".ADVANCES IN ATMOSPHERIC SCIENCES 40.2(2023):211-222.