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DOI	10.1038/s41558-023-01715-3
	Sensitivity of Arctic CH4 emissions to landscape wetness diminished by atmospheric feedbacks
	de Vrese, Philipp; Beckebanze, Lutz; Galera, Leonardo de Aro; Holl, David; Kleinen, Thomas; Kutzbach, Lars; Rehder, Zoe; Brovkin, Victor
发表日期	2023
ISSN	1758-678X
EISSN	1758-6798
起始页码	832
结束页码	+
卷号	13 期号:8
英文摘要	Simulations using land surface models suggest future increases in Arctic methane emissions to be limited by the thaw-induced drying of permafrost landscapes. Here we use the Max Planck Institute Earth System Model to show that this constraint may be weaker than previously thought owing to compensatory atmospheric feedbacks. In two sets of extreme scenario simulations, a modification of the permafrost hydrology resulted in diverging hydroclimatic trajectories that, however, led to comparable methane fluxes. While a wet Arctic showed almost twice the wetland area compared with an increasingly dry Arctic, the latter featured greater substrate availability due to higher temperatures resulting from reduced evaporation, diminished cloudiness and more surface solar radiation. Given the limitations of present-day models and the potential model dependence of the atmospheric response, our results provide merely a qualitative estimation of these effects, but they suggest that atmospheric feedbacks play an important role in shaping future Arctic methane emissions. Future Arctic methane emissions may be less dependent on soil hydrology. Here, this study indicates that if the high latitudes maintain wet conditions, the cooling effects could limit the increase in methane, resulting in emissions similar to a warmer dry scenario with a higher substrate availability.
英文关键词	TERRESTRIAL METHANE EMISSIONS; ICE-WEDGE DEGRADATION; PERMAFROST-CARBON; HIGH-LATITUDE; POLYGONAL TUNDRA; HYDROLOGY; DYNAMICS; REGION; PROJECTIONS; RELEASE
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001023399800003
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282405
作者单位	Max Planck Society; Helmholtz Association; Karlsruhe Institute of Technology; University of Hamburg; University of Hamburg
推荐引用方式 GB/T 7714	de Vrese, Philipp,Beckebanze, Lutz,Galera, Leonardo de Aro,et al. Sensitivity of Arctic CH4 emissions to landscape wetness diminished by atmospheric feedbacks[J],2023,13(8).
APA	de Vrese, Philipp.,Beckebanze, Lutz.,Galera, Leonardo de Aro.,Holl, David.,Kleinen, Thomas.,...&Brovkin, Victor.(2023).Sensitivity of Arctic CH4 emissions to landscape wetness diminished by atmospheric feedbacks.Nature Climate Change,13(8).
MLA	de Vrese, Philipp,et al."Sensitivity of Arctic CH4 emissions to landscape wetness diminished by atmospheric feedbacks".Nature Climate Change 13.8(2023).