气候变化领域集成服务门户(CCPortal): The importance of a surface organic layer in simulating permafrost thermal and carbon dynamics

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DOI	10.5194/tc-10-465-2016
	The importance of a surface organic layer in simulating permafrost thermal and carbon dynamics
	Jafarov E.; Schaefer K.
发表日期	2016
ISSN	19940416
卷号	10 期号:1
英文摘要	Permafrost-affected soils contain twice as much carbon as currently exists in the atmosphere. Studies show that warming of the perennially frozen ground could initiate significant release of the frozen soil carbon into the atmosphere. Initializing the frozen permafrost carbon with the observed soil carbon distribution from the Northern Circumpolar Soil Carbon Database reduces the uncertainty associated with the modeling of the permafrost carbon feedback. To improve permafrost thermal and carbon dynamics we implemented a dynamic surface organic layer with vertical carbon redistribution, and introduced dynamic root growth controlled by active layer thickness, which improved soil carbon exchange between frozen and thawed pools. These changes increased the initial amount of simulated frozen carbon from 313 to 560 Gt C, consistent with observed frozen carbon stocks, and increased the spatial correlation of the simulated and observed distribution of frozen carbon from 0.12 to 0.63. © 2016 Author(s).
学科领域	active layer; air-soil interaction; carbon cycle; carbon sequestration; frozen ground; gas exchange; heat flux; organic matter; permafrost; soil carbon; spatial distribution
语种	英语
scopus关键词	active layer; air-soil interaction; carbon cycle; carbon sequestration; frozen ground; gas exchange; heat flux; organic matter; permafrost; soil carbon; spatial distribution
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119697
作者单位	Institute of Arctic and Alpine Research, University of Colorado at Boulder, Boulder, CO 80309, United States; National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, Boulder, CO 80309, United States
推荐引用方式 GB/T 7714	Jafarov E.,Schaefer K.. The importance of a surface organic layer in simulating permafrost thermal and carbon dynamics[J],2016,10(1).
APA	Jafarov E.,&Schaefer K..(2016).The importance of a surface organic layer in simulating permafrost thermal and carbon dynamics.Cryosphere,10(1).
MLA	Jafarov E.,et al."The importance of a surface organic layer in simulating permafrost thermal and carbon dynamics".Cryosphere 10.1(2016).