The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC
It is known that global climate models (GCMs) have substantial biases in the surface freshwater flux. Using numerical bifurcation analyses on a global ocean model, we study here the effect of freshwater flux biases over the Indian Ocean on the multiple equilibrium regime of the Atlantic Meridional O...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/452765 2024-06-23T07:54:57+00:00 The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC Dijkstra, Henk A. van Westen, René M. Sub Physical Oceanography 2024 application/pdf https://dspace.library.uu.nl/handle/1874/452765 en eng 0280-6495 https://dspace.library.uu.nl/handle/1874/452765 info:eu-repo/semantics/OpenAccess Atlantic Ocean Circulation Bifurcation Analysis Freshwater Flux Biases Oceanography Atmospheric Science Article 2024 ftunivutrecht 2024-06-05T00:13:06Z It is known that global climate models (GCMs) have substantial biases in the surface freshwater flux. Using numerical bifurcation analyses on a global ocean model, we study here the effect of freshwater flux biases over the Indian Ocean on the multiple equilibrium regime of the Atlantic Meridional Overturning Circulation (AMOC). We find that a (positive) freshwater flux bias over the Indian Ocean shifts the multiple equilibrium regime to larger values of North Atlantic freshwater input but hardly affects the associated hysteresis width. The magnitude of this shift depends on the way the anomalous North Atlantic freshwater flux is compensated. The changes in bifurcation diagrams can be explained from the overall freshwater balance over the Atlantic basin. Article in Journal/Newspaper North Atlantic Utrecht University Repository Indian |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Atlantic Ocean Circulation Bifurcation Analysis Freshwater Flux Biases Oceanography Atmospheric Science |
spellingShingle |
Atlantic Ocean Circulation Bifurcation Analysis Freshwater Flux Biases Oceanography Atmospheric Science Dijkstra, Henk A. van Westen, René M. The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC |
topic_facet |
Atlantic Ocean Circulation Bifurcation Analysis Freshwater Flux Biases Oceanography Atmospheric Science |
description |
It is known that global climate models (GCMs) have substantial biases in the surface freshwater flux. Using numerical bifurcation analyses on a global ocean model, we study here the effect of freshwater flux biases over the Indian Ocean on the multiple equilibrium regime of the Atlantic Meridional Overturning Circulation (AMOC). We find that a (positive) freshwater flux bias over the Indian Ocean shifts the multiple equilibrium regime to larger values of North Atlantic freshwater input but hardly affects the associated hysteresis width. The magnitude of this shift depends on the way the anomalous North Atlantic freshwater flux is compensated. The changes in bifurcation diagrams can be explained from the overall freshwater balance over the Atlantic basin. |
author2 |
Sub Physical Oceanography |
format |
Article in Journal/Newspaper |
author |
Dijkstra, Henk A. van Westen, René M. |
author_facet |
Dijkstra, Henk A. van Westen, René M. |
author_sort |
Dijkstra, Henk A. |
title |
The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC |
title_short |
The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC |
title_full |
The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC |
title_fullStr |
The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC |
title_full_unstemmed |
The Effect of Indian Ocean Surface Freshwater Flux Biases On the Multi-Stable Regime of the AMOC |
title_sort |
effect of indian ocean surface freshwater flux biases on the multi-stable regime of the amoc |
publishDate |
2024 |
url |
https://dspace.library.uu.nl/handle/1874/452765 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
0280-6495 https://dspace.library.uu.nl/handle/1874/452765 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1802647315837616128 |