Quantifying Climate Feedbacks from Abrupt Changes in High-Latitude Trace-Gas Emissions

doi:10.2172/1076751

GSTDTAP > 地球科学

DOI	10.2172/1076751
报告编号	DOE/ER64597-3
来源ID	OSTI ID: 1076751
	Quantifying Climate Feedbacks from Abrupt Changes in High-Latitude Trace-Gas Emissions
	Schlosser, Courtney Adam [MIT]; Walter-Anthony, Katey [University of Alaska]; Zhuang, Qianlai [Purdue University]; Melillo, Jerry [Marine Biological Laboratory]
	2013-04-26
出版年	2013
语种	英语
国家	美国
领域	地球科学
英文摘要	Our overall goal was to quantify the potential for threshold changes in natural emission rates of trace gases, particularly methane and carbon dioxide, from pan-arctic terrestrial systems under the spectrum of anthropogenically forced climate warming, and the extent to which these emissions provide a strong feedback mechanism to global climate warming. This goal is motivated under the premise that polar amplification of global climate warming will induce widespread thaw and degradation of the permafrost, and would thus cause substantial changes in the extent of wetlands and lakes, especially thermokarst (thaw) lakes, over the Arctic. Through a coordinated effort of field measurements, model development, and numerical experimentation with an integrated assessment model framework, we have investigated the following hypothesis: There exists a climate-warming threshold beyond which permafrost degradation becomes widespread and thus instigates strong and/or sharp increases in methane emissions (via thermokarst lakes and wetland expansion). These would outweigh any increased uptake of carbon (e.g. from peatlands) and would result in a strong, positive feedback to global climate warming.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6293
专题	地球科学
推荐引用方式 GB/T 7714	Schlosser, Courtney Adam [MIT],Walter-Anthony, Katey [University of Alaska],Zhuang, Qianlai [Purdue University],et al. Quantifying Climate Feedbacks from Abrupt Changes in High-Latitude Trace-Gas Emissions,2013.