文章基本信息

标题：Characterisation of Atlantic meridional overturning hysteresis using Langevin dynamics
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作者：Jelle van den Berk ; Sybren Drijfhout ; Wilco Hazeleger 等
期刊名称：Earth System Dynamics
电子版ISSN：2190-4995
出版年度：2021
卷号：12
期号：1
页码：69-81
DOI：10.5194/esd-12-69-2021
语种：English
出版社：Copernicus Publications
摘要：Hysteresis diagrams of the Atlantic meridional overturning circulation (AMOC) under freshwater forcing from climate models of intermediate complexity are fitted to a simple model based on the Langevin equation. A total of six parameters are sufficient to quantitatively describe the collapses seen in these simulations. Reversing the freshwater forcing results in asymmetric behaviour that is less well captured and appears to require a more complicated model. The Langevin model allows for comparison between models that display an AMOC collapse. Differences between the climate models studied here are mainly due to the strength of the stable AMOC and the strength of the response to a freshwater forcing.