气候变化领域集成服务门户(CCPortal): Qinghai-Tibet Plateau wetting reduces permafrost thermal responses to climate warming

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DOI	10.1016/j.epsl.2021.116858
	Qinghai-Tibet Plateau wetting reduces permafrost thermal responses to climate warming
	Zhang, Guofei; Nan, Zhuotong; Zhao, Lin; Liang, Yijia; Cheng, Guodong
通讯作者	Nan, ZT (通讯作者)，Nanjing Normal Univ, Minist Educ Virtual Geog Environm, Key Lab, Nanjing 210023, Peoples R China.
发表日期	2021
ISSN	0012-821X
EISSN	1385-013X
卷号	562
英文摘要	Permafrost, as one of the cryospheric indicators, is extremely sensitive to climatic changes. The Qinghai-Tibet Plateau has experienced remarkable warming and wetting since the mid-1990s. Its recent wetting alters thermal and hydrological properties in permafrost regions and inevitably affects permafrost thermal dynamics. While previous studies mostly focused on the effects of warming on permafrost, little attention has been paid to the effects of concomitant wetting. Here, a land surface model adapted for permafrost simulation is employed to quantitatively investigate the impacts of climate warming and wetting on permafrost thermal regimes by setting up a group of hypothetical numerical scenarios on the basis of historical meteorological records. The results reveal that climate wetting reduces permafrost thermal responses to warming and this effect is especially evident in the arid and semi-arid zones. It was estimated that one-degree warming induces an average increase of 0.46m in active layer thickness (ATL) and 0.53 degrees C in temperature at the top of permafrost (TTOP), and a 100 mm wetting in summer precipitation leads to a mean decrease of 0.35m in ALT and 0.36 degrees C in TTOP. Furthermore, we found through the simulations that increased summer precipitation imposes dual effects on permafrost in semi-arid high altitudes. (C) 2021 The Author(s). Published by Elsevier B.V.
英文关键词	climate wetting; permafrost; thermal regime; numerical modeling; Qinghai-Tibet Plateau
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000636736200025
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254710
作者单位	[Zhang, Guofei; Nan, Zhuotong; Liang, Yijia] Nanjing Normal Univ, Minist Educ Virtual Geog Environm, Key Lab, Nanjing 210023, Peoples R China; [Nan, Zhuotong] Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China; [Zhao, Lin] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China; [Cheng, Guodong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Guofei,Nan, Zhuotong,Zhao, Lin,et al. Qinghai-Tibet Plateau wetting reduces permafrost thermal responses to climate warming[J]. 中国科学院西北生态环境资源研究院,2021,562.
APA	Zhang, Guofei,Nan, Zhuotong,Zhao, Lin,Liang, Yijia,&Cheng, Guodong.(2021).Qinghai-Tibet Plateau wetting reduces permafrost thermal responses to climate warming.EARTH AND PLANETARY SCIENCE LETTERS,562.
MLA	Zhang, Guofei,et al."Qinghai-Tibet Plateau wetting reduces permafrost thermal responses to climate warming".EARTH AND PLANETARY SCIENCE LETTERS 562(2021).