气候变化领域集成服务门户(CCPortal): Rate-Dependent Hysteresis of the Atlantic Meridional Overturning Circulation System and Its Asymmetric Loop

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DOI	10.1029/2020GL090132
	Rate-Dependent Hysteresis of the Atlantic Meridional Overturning Circulation System and Its Asymmetric Loop
	An S.-I.; Kim H.-J.; Kim S.-K.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	Abrupt climate changes have occurred repeatedly in the past when the Earth climate system was forced across a threshold. A hysteresis with saddle nodes is the best means to explain the abruptness of a climate system. Here, we study the dynamic hysteresis of the Atlantic Meridional Overturning Circulation (AMOC) with a Stommel's box model and an Earth system model subject to a freshwater flux forcing (FWF). In Stommel's box model, the area of the hysteresis loop increases with increasing FWF frequency, and thus an abrupt transition from the off-state to the on-state of the AMOC (opposite) occurs at lower (higher) FWF than in static hysteresis, referring a “lagged tipping.” In the Earth system model, the expansion/contraction of the hysteresis loop area as a function of FWF frequency is also observed. However, abruptness in the hysteresis is highly distinct in the off-to-on state than the on-to-off state due to asymmetric salt-advection feedback. © 2020. The Authors.
英文关键词	Climate change; Earth (planet); Hysteresis; Hysteresis loops; Abrupt climate change; Abrupt transition; Atlantic meridional overturning circulations; Climate system; Dynamic hysteresis; Earth system model; Freshwater fluxes; Rate-dependent hysteresis; Oceanography
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169242
作者单位	Department of Atmospheric Sciences/Irreversible Climate Change Research Center, Yonsei University, Seoul, South Korea
推荐引用方式 GB/T 7714	An S.-I.,Kim H.-J.,Kim S.-K.. Rate-Dependent Hysteresis of the Atlantic Meridional Overturning Circulation System and Its Asymmetric Loop[J],2021,48(1).
APA	An S.-I.,Kim H.-J.,&Kim S.-K..(2021).Rate-Dependent Hysteresis of the Atlantic Meridional Overturning Circulation System and Its Asymmetric Loop.Geophysical Research Letters,48(1).
MLA	An S.-I.,et al."Rate-Dependent Hysteresis of the Atlantic Meridional Overturning Circulation System and Its Asymmetric Loop".Geophysical Research Letters 48.1(2021).