Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover

doi:10.1088/1748-9326/ab0839

	Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover
	Wang, Zhan 1; Kim, Yeonjoo 2; Seo, Hochoel 3; Um, Myoung-Jin 4; Mao, Jiafu 5
	2019-04-01
发表期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
卷号	14 期号:4
摘要	The permafrost response to variations in Arctic vegetation remains controversial. We investigated the consequences of Arctic vegetation greenness variation over the past three decades using a coupled land-atmosphere model and found that it induces air temperature perturbation, which is further amplified by snow cover variation and eventually leaves a footprint on soil temperature. Compared to the atmospheric impacts of vegetation, local shading of vegetation canopy has relatively minor effects on soil temperature. Significant soil warming was observed along the summer snowline between the Low and High Arctic, indicating the direct impact of snow cover variation led by vegetation changes. In the Low Arctic, the winter snowpack insulates the soil from colder air, resulting in less permafrost. In the High Arctic, snow persists for more than 330 d per year and has a strong protection effect on the permafrost as it insulates soil from warmer summer air and reflects solar radiation.
关键词	arctic vegetation permafrost snow cover
DOI	10.1088/1748-9326/ab0839
收录类别	SCI
语种	英语
WOS关键词	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS研究方向	Science & Technology
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000464504800002
出版者	IOP PUBLISHING LTD
引用统计
文献类型	期刊论文
专题	任务一_子任务一循证社会科学证据集成任务一
作者单位	1.Yonsei Univ, Dept Civil & Environm Engn, Seoul 03722, South Korea 2.Yonsei Univ, Dept Civil & Environm Engn, Seoul 03722, South Korea 3.Yonsei Univ, Dept Civil & Environm Engn, Seoul 03722, South Korea 4.Kyonggi Univ, Dept Civil Engn, Suwon 16227, Gyeonggi, South Korea 5.Oak Ridge Natl Lab, Environm Sci Div, Oak Ridge, TN 37831 USA
推荐引用方式 GB/T 7714	Wang, Zhan,Kim, Yeonjoo,Seo, Hochoel,et al. Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(4).
APA	Wang, Zhan,Kim, Yeonjoo,Seo, Hochoel,Um, Myoung-Jin,&Mao, Jiafu.(2019).Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover.ENVIRONMENTAL RESEARCH LETTERS,14(4).
MLA	Wang, Zhan,et al."Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover".ENVIRONMENTAL RESEARCH LETTERS 14.4(2019).