DOI: 10.1002/2015GL063189
论文题名: Climate-forced changes in available energy and methane bubbling from subarctic lakes
作者: Thornton B.F. ; Wik M. ; Crill P.M.
刊名: Geophysical Research Letters
ISSN: 0094-8887
EISSN: 1944-8618
出版年: 2015
卷: 42, 期: 6 起始页码: 1936
结束页码: 1942
语种: 英语
英文关键词: Abisko
; lakes
; methane
; shortwave
; Stordalen
; subarctic
Scopus关键词: Bubble formation
; Ice control
; Methane
; Abisko
; Available energy
; Methane ebullition
; Northern sweden
; shortwave
; Stordalen
; Strong correlation
; subarctic
; Lakes
; carbon cycle
; climate change
; climate forcing
; estimation method
; ice free corridor
; lacustrine deposit
; methane
; seasonal variation
; shortwave radiation
; subarctic region
; transport process
; Sweden
英文摘要: Strong correlations between seasonal energy input and methane (CH4 ) bubbling (ebullition) in northern lakes suggest that energy proxies might provide a constraint on the magnitude of future CH4 emissions. Ebullition is a major pathway for transporting anaerobically produced CH4 from lake sediments to the atmosphere and represents a large unquantified CH4 source. In high-latitude, postglacial lakes during the ice-free season, solar shortwave energy input can constrain CH4 productivity via control of sediment temperature. Utilizing long-term climatic predictors, we calculate CH4 ebullition from three subarctic lakes in northern Sweden over the period of 1916-2079. Using observed energy trends, the seasonal average lake CH4 ebullition is predicted to increase by 80% between the 1916-1926 decade and the 2040-2079 period. Present-day seasonal average methane ebullition is estimated to have already increased 24% since the 1916-1926 decade. Key Points Expanded data set reinforces strong energy-CH4 ebullition link in subarctic lakes Twenty eight years of shortwave energy measurements used to estimate past CH4 ebullition Study lake CH4 ebullition increases 80% between years 1916-1926 and 2040-2079 ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927704466&doi=10.1002%2f2015GL063189&partnerID=40&md5=d0172616768ad3e48974c857653f6896
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8503
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Geological Sciences, Stockholm University, Bolin Centre for Climate Research, Stockholm, Sweden
Recommended Citation:
Thornton B.F.,Wik M.,Crill P.M.. Climate-forced changes in available energy and methane bubbling from subarctic lakes[J]. Geophysical Research Letters,2015-01-01,42(6).