Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions
International audience Ocean general circulation models at the eddy-permitting regime are known to under-resolve the mesoscale eddy activity and associated eddy-mean interaction. Under-resolving the mesoscale eddy field has consequences for the resulting mean state, affecting the modelled ocean circ...
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Format: | Report |
Language: | English |
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HAL CCSD
2024
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Online Access: | https://cnrs.hal.science/hal-04605065 https://cnrs.hal.science/hal-04605065/document https://cnrs.hal.science/hal-04605065/file/splitting_BGC_2024.pdf |
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ftinsu:oai:HAL:hal-04605065v1 |
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openpolar |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
scale-aware mesoscale eddy parameterisation ocean circulation climate change numerical modelling biophysical interactions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
scale-aware mesoscale eddy parameterisation ocean circulation climate change numerical modelling biophysical interactions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Ruan, X Couespel, Damien Lévy, Marina Li, J Mak, J Wang, Y Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions |
topic_facet |
scale-aware mesoscale eddy parameterisation ocean circulation climate change numerical modelling biophysical interactions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Ocean general circulation models at the eddy-permitting regime are known to under-resolve the mesoscale eddy activity and associated eddy-mean interaction. Under-resolving the mesoscale eddy field has consequences for the resulting mean state, affecting the modelled ocean circulation and biogeochemical responses, and impacting the quality of climate projections. There is an ongoing debate on whether and how a parameterisation should be utilised in the eddy-permitting regime. Focusing on the Gent–McWilliams (GM) based parameterisations, it is known that, on the one hand, not utilising a parameterisation leads to insufficient eddy feedback and results in biases. On the other hand, utilising a parameterisation leads to double-counting of the eddy feedback, and introduces other biases. A recently proposed approach, known as splitting, modifies the way GM-based schemes are applied in eddy-permitting regimes, and has been demonstrated to be effective in an idealised Southern Ocean channel model. In this work, we evaluate whether the splitting approach can lead to improvements in the physical and biogeochemical responses in an idealised double gyre model. Compared with a high resolution mesoscale eddy resolving model truth, the use of the GM-based GEOMETRIC parameterisation together with splitting in the eddy-permitting regime leads to broad improvements in the control pre-industrial scenario and an idealised climate change scenario, over models with and models without the GM-based GEOMETRIC parameterisation active. While there are still some deficiencies, particularly in the subtropical region where the transport is too weak and may need momentum re-injection to reduce the biases, the present work provides further evidence in support of using the splitting procedure together with a GM-based parameterisation in ocean general circulation models at eddy-permitting resolutions. |
author2 |
Hong Kong University of Science and Technology (HKUST) Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
format |
Report |
author |
Ruan, X Couespel, Damien Lévy, Marina Li, J Mak, J Wang, Y |
author_facet |
Ruan, X Couespel, Damien Lévy, Marina Li, J Mak, J Wang, Y |
author_sort |
Ruan, X |
title |
Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions |
title_short |
Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions |
title_full |
Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions |
title_fullStr |
Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions |
title_full_unstemmed |
Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions |
title_sort |
combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://cnrs.hal.science/hal-04605065 https://cnrs.hal.science/hal-04605065/document https://cnrs.hal.science/hal-04605065/file/splitting_BGC_2024.pdf |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
https://cnrs.hal.science/hal-04605065 2024 |
op_relation |
hal-04605065 https://cnrs.hal.science/hal-04605065 https://cnrs.hal.science/hal-04605065/document https://cnrs.hal.science/hal-04605065/file/splitting_BGC_2024.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1810481745993138176 |
spelling |
ftinsu:oai:HAL:hal-04605065v1 2024-09-15T18:37:23+00:00 Combined physical and biogeochemical assessment of mesoscale eddy parameterisations in ocean models: eddy-induced advection at eddy-permitting resolutions Ruan, X Couespel, Damien Lévy, Marina Li, J Mak, J Wang, Y Hong Kong University of Science and Technology (HKUST) Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) 2024-06-07 https://cnrs.hal.science/hal-04605065 https://cnrs.hal.science/hal-04605065/document https://cnrs.hal.science/hal-04605065/file/splitting_BGC_2024.pdf en eng HAL CCSD hal-04605065 https://cnrs.hal.science/hal-04605065 https://cnrs.hal.science/hal-04605065/document https://cnrs.hal.science/hal-04605065/file/splitting_BGC_2024.pdf info:eu-repo/semantics/OpenAccess https://cnrs.hal.science/hal-04605065 2024 scale-aware mesoscale eddy parameterisation ocean circulation climate change numerical modelling biophysical interactions [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/preprint Preprints, Working Papers, . 2024 ftinsu 2024-08-07T23:40:48Z International audience Ocean general circulation models at the eddy-permitting regime are known to under-resolve the mesoscale eddy activity and associated eddy-mean interaction. Under-resolving the mesoscale eddy field has consequences for the resulting mean state, affecting the modelled ocean circulation and biogeochemical responses, and impacting the quality of climate projections. There is an ongoing debate on whether and how a parameterisation should be utilised in the eddy-permitting regime. Focusing on the Gent–McWilliams (GM) based parameterisations, it is known that, on the one hand, not utilising a parameterisation leads to insufficient eddy feedback and results in biases. On the other hand, utilising a parameterisation leads to double-counting of the eddy feedback, and introduces other biases. A recently proposed approach, known as splitting, modifies the way GM-based schemes are applied in eddy-permitting regimes, and has been demonstrated to be effective in an idealised Southern Ocean channel model. In this work, we evaluate whether the splitting approach can lead to improvements in the physical and biogeochemical responses in an idealised double gyre model. Compared with a high resolution mesoscale eddy resolving model truth, the use of the GM-based GEOMETRIC parameterisation together with splitting in the eddy-permitting regime leads to broad improvements in the control pre-industrial scenario and an idealised climate change scenario, over models with and models without the GM-based GEOMETRIC parameterisation active. While there are still some deficiencies, particularly in the subtropical region where the transport is too weak and may need momentum re-injection to reduce the biases, the present work provides further evidence in support of using the splitting procedure together with a GM-based parameterisation in ocean general circulation models at eddy-permitting resolutions. Report Southern Ocean Institut national des sciences de l'Univers: HAL-INSU |