气候变化领域集成服务门户(CCPortal): Rising methane emissions from boreal lakes due to increasing ice-free days

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DOI	10.1088/1748-9326/ab8254
	Rising methane emissions from boreal lakes due to increasing ice-free days
	Guo M.; Zhuang Q.; Tan Z.; Shurpali N.; Juutinen S.; Kortelainen P.; Martikainen P.J.
发表日期	2020
ISSN	17489318
卷号	15 期号:6
英文摘要	Lakes account for about 10% of the boreal landscape and are responsible for approximately 30% of biogenic methane emissions that have been found to increase under changing climate. However, the quantification of this climate-sensitive methane source is fraught with large uncertainty under warming climate conditions. Only a few studies have addressed the mechanism of climate impact on the increase of northern lake methane emissions. This study uses a large observational dataset of lake methane concentrations in Finland to constrain methane emissions with an extant process-based lake biogeochemical model. We found that the total current diffusive emission from Finnish lakes is 0.12 ± 0.03 Tg CH4 yr-1 and will increase by 26%-59% by the end of this century depending on different warming scenarios. We discover that while warming lake water and sediment temperature plays an important role, the climate impact on ice-on periods is a key indicator of future emissions. We conclude that these boreal lakes remain a significant methane source under the warming climate within this century. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	boreal lake; climate change; methane emission
语种	英语
scopus关键词	Large dataset; Methane; Biogeochemical modeling; Changing climate; Climate impacts; Key indicator; Methane concentrations; Methane emissions; Process-based; Warming climate; Lakes; biogenic emission; Boreal Kingdom; climate change; climate conditions; concentration (composition); lacustrine deposit; lake water; methane; uncertainty analysis; warming
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154012
作者单位	Purdue University, West Lafayette, IN, United States; Purdue Climate Change Research Center, West Lafayette, IN, United States; Pacific Northwest National Laboratory, Richland, WA, United States; University of Eastern Finland, Kuopio, Finland; University of Helsinki, Helsinki, Finland; Finnish Environment Institute, Helsinki, Finland
推荐引用方式 GB/T 7714	Guo M.,Zhuang Q.,Tan Z.,et al. Rising methane emissions from boreal lakes due to increasing ice-free days[J],2020,15(6).
APA	Guo M..,Zhuang Q..,Tan Z..,Shurpali N..,Juutinen S..,...&Martikainen P.J..(2020).Rising methane emissions from boreal lakes due to increasing ice-free days.Environmental Research Letters,15(6).
MLA	Guo M.,et al."Rising methane emissions from boreal lakes due to increasing ice-free days".Environmental Research Letters 15.6(2020).