Greenhouse gas emissions from diverse Arctic Alaskan lakes are dominated by young carbon

  title={Greenhouse gas emissions from diverse Arctic Alaskan lakes are dominated by young carbon},
  author={Clayton D. Elder and Xiaomei Xu and Jennifer C. Walker and Jordan L. Schnell and Kenneth M. Hinkel and Amy Townsend‐Small and Christopher D. Arp and John W. Pohlman and Benjamin V. Gaglioti and Claudia I. Czimczik},
  journal={Nature Climate Change},
Climate-sensitive Arctic lakes have been identified as conduits for ancient permafrost-carbon (C) emissions and as such accelerate warming. However, the environmental factors that control emission pathways and their sources are unclear; this complicates upscaling, forecasting and climate-impact-assessment efforts. Here we show that current whole-lake CH4 and CO2 emissions from widespread lakes in Arctic Alaska primarily originate from organic matter fixed within the past 3–4 millennia (modern… 
Permafrost carbon emissions in a changing Arctic
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Seasonal Sources of Whole‐Lake CH4 and CO2 Emissions From Interior Alaskan Thermokarst Lakes
The lakes that form via ice‐rich permafrost thaw emit CH4 and CO2 to the atmosphere from previously frozen ancient permafrost sources. Despite this potential to positively feedback to climate change,
Negligible cycling of terrestrial carbon in many lakes of the arid circumpolar landscape
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Modern to millennium-old greenhouse gases emitted from ponds and lakes of the Eastern Canadian Arctic (Bylot Island, Nunavut)
Abstract. Ponds and lakes are widespread across the rapidly changing permafrost environments. Aquatic systems play an important role in global biogeochemical cycles, especially in greenhouse gas
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Climate warming may lead to a positive feedback of increased emissions of CH4 from sediments beneath Arctic lakes, but the contribution of these lakes to the global CH4 budget is poorly quantified.
Methane sources in arctic thermokarst lake sediments on the North Slope of Alaska.
Analysis of the integrated data set revealed that there is biological CH4 production in Siqlukaq at moderate levels, while the very low levels of CH4 detected in Sukok had a mixed origin, with little to no biological Ch4 production.
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Methane is an important greenhouse gas, responsible for about 20% of the warming induced by long-lived greenhouse gases since pre-industrial times. By reacting with hydroxyl radicals, methane reduces
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