气候变化领域集成服务门户(CCPortal): Timescales of the permafrost carbon cycle and legacy effects of temperature overshoot scenarios

CCPortal

DOI	10.1038/s41467-021-23010-5
	Timescales of the permafrost carbon cycle and legacy effects of temperature overshoot scenarios
	de Vrese P.; Brovkin V.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Minimizing the risks and impacts of climate change requires limiting the global temperature increase to 1.5 °C above preindustrial levels, while the difficulty of reducing carbon emissions at the necessary rate increases the likelihood of temporarily overshooting this climate target. Using simulations with the land surface model JSBACH, we show that it takes high-latitude ecosystems and the state of permafrost-affected soils several centuries to adjust to the atmospheric conditions that arise at the 1.5 °C-target. Here, a temporary warming of the Arctic entails important legacy effects and we show that feedbacks between water-, energy- and carbon cycles allow for multiple steady-states in permafrost regions, which differ with respect to the physical state of the soil, the soil carbon concentrations and the terrestrial carbon uptake and -release. The steady-states depend on the soil organic matter content at the point of climate stabilization, which is significantly affected by an overshoot-induced soil carbon loss. © 2021, The Author(s).
语种	英语
scopus关键词	carbon; soil organic matter; water; carbon cycle; carbon emission; climate change; climate effect; emission control; land surface; permafrost; scenario analysis; temperature effect; timescale; Arctic; Article; carbon cycle; climate; feedback system; latitude; permafrost; soil temperature; steady state; temperature; warming; Arctic
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250700
作者单位	Max Planck Institute for Meteorology, The Land in the Earth System, Hamburg, Germany; Center for Earth System Research and Sustainability, University of Hamburg, Hamburg, Germany
推荐引用方式 GB/T 7714	de Vrese P.,Brovkin V.. Timescales of the permafrost carbon cycle and legacy effects of temperature overshoot scenarios[J],2021,12(1).
APA	de Vrese P.,&Brovkin V..(2021).Timescales of the permafrost carbon cycle and legacy effects of temperature overshoot scenarios.Nature Communications,12(1).
MLA	de Vrese P.,et al."Timescales of the permafrost carbon cycle and legacy effects of temperature overshoot scenarios".Nature Communications 12.1(2021).