Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation
A statistical indicator for dynamic stability, known as the [Formula: see text] indicator, is used to gauge the stability and, hence, detect approaching tipping points of simulation data from a reduced five-box model of the North Atlantic Meridional Overturning Circulation (AMOC) exposed to a time-d...
Published in: | Chaos: An Interdisciplinary Journal of Nonlinear Science |
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Online Access: | http://hdl.handle.net/10852/97775 https://doi.org/10.1063/5.0089694 |
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ftoslouniv:oai:www.duo.uio.no:10852/97775 2024-09-30T14:35:57+00:00 Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation ENEngelskEnglishDynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation Rodal, Marie Krumscheid, Sebastian Madan, Gaurav Lacasce, Joseph Henry Vercauteren, Nikki 2022-11-21T14:44:14Z http://hdl.handle.net/10852/97775 https://doi.org/10.1063/5.0089694 EN eng Rodal, Marie Krumscheid, Sebastian Madan, Gaurav Lacasce, Joseph Henry Vercauteren, Nikki . Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation. Chaos. 2022 http://hdl.handle.net/10852/97775 2077490 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chaos&rft.volume=&rft.spage=&rft.date=2022 Chaos 32 11 https://doi.org/10.1063/5.0089694 1054-1500 Journal article Tidsskriftartikkel Peer reviewed AcceptedVersion 2022 ftoslouniv https://doi.org/10.1063/5.0089694 2024-09-12T05:44:05Z A statistical indicator for dynamic stability, known as the [Formula: see text] indicator, is used to gauge the stability and, hence, detect approaching tipping points of simulation data from a reduced five-box model of the North Atlantic Meridional Overturning Circulation (AMOC) exposed to a time-dependent hosing function. The hosing function simulates the influx of fresh water due to the melting of the Greenland ice sheet and increased precipitation in the North Atlantic. The [Formula: see text] indicator is designed to detect changes in the memory properties of the dynamics and is based on fitting auto-regressive moving-average models in a sliding window approach to time series data. An increase in memory properties is interpreted as a sign of dynamical instability. The performance of the indicator is tested on time series subject to different types of tipping, namely, bifurcation-induced, noise-induced, and rate-induced tipping. The numerical analysis shows that the indicator indeed responds to the different types of induced instabilities. Finally, the indicator is applied to two AMOC time series from a full complexity Earth systems model (CESM2). Compared with the doubling [Formula: see text] scenario, the quadrupling [Formula: see text] scenario results in stronger dynamical instability of the AMOC during its weakening phase. Article in Journal/Newspaper Greenland Ice Sheet North Atlantic Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Greenland Chaos: An Interdisciplinary Journal of Nonlinear Science 32 11 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
A statistical indicator for dynamic stability, known as the [Formula: see text] indicator, is used to gauge the stability and, hence, detect approaching tipping points of simulation data from a reduced five-box model of the North Atlantic Meridional Overturning Circulation (AMOC) exposed to a time-dependent hosing function. The hosing function simulates the influx of fresh water due to the melting of the Greenland ice sheet and increased precipitation in the North Atlantic. The [Formula: see text] indicator is designed to detect changes in the memory properties of the dynamics and is based on fitting auto-regressive moving-average models in a sliding window approach to time series data. An increase in memory properties is interpreted as a sign of dynamical instability. The performance of the indicator is tested on time series subject to different types of tipping, namely, bifurcation-induced, noise-induced, and rate-induced tipping. The numerical analysis shows that the indicator indeed responds to the different types of induced instabilities. Finally, the indicator is applied to two AMOC time series from a full complexity Earth systems model (CESM2). Compared with the doubling [Formula: see text] scenario, the quadrupling [Formula: see text] scenario results in stronger dynamical instability of the AMOC during its weakening phase. |
format |
Article in Journal/Newspaper |
author |
Rodal, Marie Krumscheid, Sebastian Madan, Gaurav Lacasce, Joseph Henry Vercauteren, Nikki |
spellingShingle |
Rodal, Marie Krumscheid, Sebastian Madan, Gaurav Lacasce, Joseph Henry Vercauteren, Nikki Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation |
author_facet |
Rodal, Marie Krumscheid, Sebastian Madan, Gaurav Lacasce, Joseph Henry Vercauteren, Nikki |
author_sort |
Rodal, Marie |
title |
Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation |
title_short |
Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation |
title_full |
Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation |
title_fullStr |
Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation |
title_full_unstemmed |
Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation |
title_sort |
dynamical stability indicator based on autoregressive moving-average models: critical transitions and the atlantic meridional overturning circulation |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/97775 https://doi.org/10.1063/5.0089694 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet North Atlantic |
genre_facet |
Greenland Ice Sheet North Atlantic |
op_source |
1054-1500 |
op_relation |
Rodal, Marie Krumscheid, Sebastian Madan, Gaurav Lacasce, Joseph Henry Vercauteren, Nikki . Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation. Chaos. 2022 http://hdl.handle.net/10852/97775 2077490 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chaos&rft.volume=&rft.spage=&rft.date=2022 Chaos 32 11 https://doi.org/10.1063/5.0089694 |
op_doi |
https://doi.org/10.1063/5.0089694 |
container_title |
Chaos: An Interdisciplinary Journal of Nonlinear Science |
container_volume |
32 |
container_issue |
11 |
_version_ |
1811639158202957824 |