Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model
Global climate models exhibit large biases in the Southern Ocean. For example, in models Antarctic bottom water is formed mostly through open-ocean deep-convection rather than through shelf convection. Still, the timescale, region, and intensity of deep-convection variability vary widely among model...
Published in: | Geophysical Research Letters |
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Online Access: | https://oceanrep.geomar.de/id/eprint/38608/ https://oceanrep.geomar.de/id/eprint/38608/8/Reintges_et_al-2017-Geophysical_Research_Letters.pdf https://oceanrep.geomar.de/id/eprint/38608/7/Reintges_et_al-2017-Geophysical_Research_Letters.sup-1.pdf https://doi.org/10.1002/2017GL074087 |
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ftoceanrep:oai:oceanrep.geomar.de:38608 2023-05-15T13:35:24+02:00 Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model Reintges, Annika Martin, Torge Latif, Mojib Park, Wonsun 2017-07-16 text https://oceanrep.geomar.de/id/eprint/38608/ https://oceanrep.geomar.de/id/eprint/38608/8/Reintges_et_al-2017-Geophysical_Research_Letters.pdf https://oceanrep.geomar.de/id/eprint/38608/7/Reintges_et_al-2017-Geophysical_Research_Letters.sup-1.pdf https://doi.org/10.1002/2017GL074087 en eng AGU (American Geophysical Union) Wiley https://oceanrep.geomar.de/id/eprint/38608/8/Reintges_et_al-2017-Geophysical_Research_Letters.pdf https://oceanrep.geomar.de/id/eprint/38608/7/Reintges_et_al-2017-Geophysical_Research_Letters.sup-1.pdf Reintges, A. , Martin, T. , Latif, M. and Park, W. (2017) Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model. Open Access Geophysical Research Letters, 44 (13). pp. 6951-6958. DOI 10.1002/2017GL074087 <https://doi.org/10.1002/2017GL074087>. doi:10.1002/2017GL074087 info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2017 ftoceanrep https://doi.org/10.1002/2017GL074087 2023-04-07T15:34:16Z Global climate models exhibit large biases in the Southern Ocean. For example, in models Antarctic bottom water is formed mostly through open-ocean deep-convection rather than through shelf convection. Still, the timescale, region, and intensity of deep-convection variability vary widely among models. We investigate the physical controls of this variability in the Atlantic sector of the Southern Ocean, where most of the models simulate recurring deep-convection events. We analyzed output from eleven exemplary CMIP5 models and four versions of the Kiel Climate Model (KCM). Of several potential physical control parameters that we tested, the ones shared by all these models are: Stratification in the convection region influences the timescale of the deep-convection variability, i.e. models with a strong (weak) stratification vary on long (short) timescales. And, sea ice volume affects the modeled mean state in the Southern Ocean: large (small) sea ice volume is associated with a non-convective (convective) predominant regime. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean Geophysical Research Letters 44 13 6951 6958 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Global climate models exhibit large biases in the Southern Ocean. For example, in models Antarctic bottom water is formed mostly through open-ocean deep-convection rather than through shelf convection. Still, the timescale, region, and intensity of deep-convection variability vary widely among models. We investigate the physical controls of this variability in the Atlantic sector of the Southern Ocean, where most of the models simulate recurring deep-convection events. We analyzed output from eleven exemplary CMIP5 models and four versions of the Kiel Climate Model (KCM). Of several potential physical control parameters that we tested, the ones shared by all these models are: Stratification in the convection region influences the timescale of the deep-convection variability, i.e. models with a strong (weak) stratification vary on long (short) timescales. And, sea ice volume affects the modeled mean state in the Southern Ocean: large (small) sea ice volume is associated with a non-convective (convective) predominant regime. |
format |
Article in Journal/Newspaper |
author |
Reintges, Annika Martin, Torge Latif, Mojib Park, Wonsun |
spellingShingle |
Reintges, Annika Martin, Torge Latif, Mojib Park, Wonsun Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model |
author_facet |
Reintges, Annika Martin, Torge Latif, Mojib Park, Wonsun |
author_sort |
Reintges, Annika |
title |
Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model |
title_short |
Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model |
title_full |
Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model |
title_fullStr |
Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model |
title_full_unstemmed |
Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model |
title_sort |
physical controls of southern ocean deep-convection variability in cmip5 models and the kiel climate model |
publisher |
AGU (American Geophysical Union) |
publishDate |
2017 |
url |
https://oceanrep.geomar.de/id/eprint/38608/ https://oceanrep.geomar.de/id/eprint/38608/8/Reintges_et_al-2017-Geophysical_Research_Letters.pdf https://oceanrep.geomar.de/id/eprint/38608/7/Reintges_et_al-2017-Geophysical_Research_Letters.sup-1.pdf https://doi.org/10.1002/2017GL074087 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/38608/8/Reintges_et_al-2017-Geophysical_Research_Letters.pdf https://oceanrep.geomar.de/id/eprint/38608/7/Reintges_et_al-2017-Geophysical_Research_Letters.sup-1.pdf Reintges, A. , Martin, T. , Latif, M. and Park, W. (2017) Physical controls of Southern Ocean deep-convection variability in CMIP5 models and the Kiel Climate Model. Open Access Geophysical Research Letters, 44 (13). pp. 6951-6958. DOI 10.1002/2017GL074087 <https://doi.org/10.1002/2017GL074087>. doi:10.1002/2017GL074087 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017GL074087 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
13 |
container_start_page |
6951 |
op_container_end_page |
6958 |
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1766065170287689728 |