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Arctic lakes are continuousmethane sources to the atmosphere under warming conditions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tan, Zeli Zhuang, Aoran |
| Copyright Year | 2015 |
| Abstract | Methane is the secondmost powerful carbon-based greenhouse gas in the atmosphere and its production in the natural environment throughmethanogenesis is positively correlatedwith temperature. Recent field studies showed thatmethane emissions fromArctic thermokarst lakes are significant and could increase by twoto four-fold due to global warming. But the estimates of this source are still poorly constrained. By using a process-based climate-sensitive lake biogeochemical model, we estimated that the total amount ofmethane emissions fromArctic lakes is 11.86 Tg yr, which is in the range of recent estimates of 7.1–17.3 Tg yr and is on the same order ofmethane emissions fromnorthern high-latitudewetlands. Themethane emission rate varies spatially over high latitudes from110.8mgCH4m −2 day in Alaska to 12.7 mgCH4m −2 day in northern Europe. Under Representative Concentration Pathways (RCP) 2.6 and 8.5 future climate scenarios,methane emissions fromArctic lakes will increase by 10.3 and 16.2 TgCH4 yr , respectively, by the end of the 21st century. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.eaps.purdue.edu/ebdl/pdfs/2015_05.pdf |
| Alternate Webpage(s) | http://www.eaps.purdue.edu/research/ebdl/pdfs/2015_05.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Biogeochemistry Command & Conquer:Yuri's Revenge Emission - Male genitalia finding Estimated Feedback Global Warming Mac OS X 10.3 Panther Methane Permafrost Simulation Wetlands |
| Content Type | Text |
| Resource Type | Article |
