Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP)
As a contribution towards improving the climate mean state of the atmosphere and the ocean in Earth system models (ESMs), we compare several coupled simulations conducted with the Max Planck Institute for Meteorology Earth System Model (MPI-ESM1.2) following the HighResMIP protocol. Our simulations...
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ftdoajarticles:oai:doaj.org/article:f3a72f22ceae459282f5724c3f2deb91 2023-05-15T14:06:37+02:00 Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP) O. Gutjahr D. Putrasahan K. Lohmann J. H. Jungclaus J.-S. von Storch N. Brüggemann H. Haak A. Stössel 2019-07-01T00:00:00Z https://doi.org/10.5194/gmd-12-3241-2019 https://doaj.org/article/f3a72f22ceae459282f5724c3f2deb91 EN eng Copernicus Publications https://www.geosci-model-dev.net/12/3241/2019/gmd-12-3241-2019.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-12-3241-2019 1991-959X 1991-9603 https://doaj.org/article/f3a72f22ceae459282f5724c3f2deb91 Geoscientific Model Development, Vol 12, Pp 3241-3281 (2019) Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.5194/gmd-12-3241-2019 2022-12-31T03:28:03Z As a contribution towards improving the climate mean state of the atmosphere and the ocean in Earth system models (ESMs), we compare several coupled simulations conducted with the Max Planck Institute for Meteorology Earth System Model (MPI-ESM1.2) following the HighResMIP protocol. Our simulations allow to analyse the separate effects of increasing the horizontal resolution of the ocean (0.4 to 0.1 ∘ ) and atmosphere (T127 to T255) submodels, and the effects of substituting the Pacanowski and Philander (PP) vertical ocean mixing scheme with the K-profile parameterization (KPP). The results show clearly distinguishable effects from all three factors. The high resolution in the ocean removes biases in the ocean interior and in the atmosphere. This leads to the important conclusion that a high-resolution ocean has a major impact on the mean state of the ocean and the atmosphere. The T255 atmosphere reduces the surface wind stress and improves ocean mixed layer depths in both hemispheres. The reduced wind forcing, in turn, slows the Antarctic Circumpolar Current (ACC), reducing it to observed values. In the North Atlantic, however, the reduced surface wind causes a weakening of the subpolar gyre and thus a slowing down of the Atlantic meridional overturning circulation (AMOC), when the PP scheme is used. The KPP scheme, on the other hand, causes stronger open-ocean convection which spins up the subpolar gyres, ultimately leading to a stronger and stable AMOC, even when coupled to the T255 atmosphere, thus retaining all the positive effects of a higher-resolved atmosphere. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Geoscientific Model Development 12 7 3241 3281 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 O. Gutjahr D. Putrasahan K. Lohmann J. H. Jungclaus J.-S. von Storch N. Brüggemann H. Haak A. Stössel Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP) |
topic_facet |
Geology QE1-996.5 |
description |
As a contribution towards improving the climate mean state of the atmosphere and the ocean in Earth system models (ESMs), we compare several coupled simulations conducted with the Max Planck Institute for Meteorology Earth System Model (MPI-ESM1.2) following the HighResMIP protocol. Our simulations allow to analyse the separate effects of increasing the horizontal resolution of the ocean (0.4 to 0.1 ∘ ) and atmosphere (T127 to T255) submodels, and the effects of substituting the Pacanowski and Philander (PP) vertical ocean mixing scheme with the K-profile parameterization (KPP). The results show clearly distinguishable effects from all three factors. The high resolution in the ocean removes biases in the ocean interior and in the atmosphere. This leads to the important conclusion that a high-resolution ocean has a major impact on the mean state of the ocean and the atmosphere. The T255 atmosphere reduces the surface wind stress and improves ocean mixed layer depths in both hemispheres. The reduced wind forcing, in turn, slows the Antarctic Circumpolar Current (ACC), reducing it to observed values. In the North Atlantic, however, the reduced surface wind causes a weakening of the subpolar gyre and thus a slowing down of the Atlantic meridional overturning circulation (AMOC), when the PP scheme is used. The KPP scheme, on the other hand, causes stronger open-ocean convection which spins up the subpolar gyres, ultimately leading to a stronger and stable AMOC, even when coupled to the T255 atmosphere, thus retaining all the positive effects of a higher-resolved atmosphere. |
format |
Article in Journal/Newspaper |
author |
O. Gutjahr D. Putrasahan K. Lohmann J. H. Jungclaus J.-S. von Storch N. Brüggemann H. Haak A. Stössel |
author_facet |
O. Gutjahr D. Putrasahan K. Lohmann J. H. Jungclaus J.-S. von Storch N. Brüggemann H. Haak A. Stössel |
author_sort |
O. Gutjahr |
title |
Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP) |
title_short |
Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP) |
title_full |
Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP) |
title_fullStr |
Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP) |
title_full_unstemmed |
Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP) |
title_sort |
max planck institute earth system model (mpi-esm1.2) for the high-resolution model intercomparison project (highresmip) |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/gmd-12-3241-2019 https://doaj.org/article/f3a72f22ceae459282f5724c3f2deb91 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_source |
Geoscientific Model Development, Vol 12, Pp 3241-3281 (2019) |
op_relation |
https://www.geosci-model-dev.net/12/3241/2019/gmd-12-3241-2019.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-12-3241-2019 1991-959X 1991-9603 https://doaj.org/article/f3a72f22ceae459282f5724c3f2deb91 |
op_doi |
https://doi.org/10.5194/gmd-12-3241-2019 |
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Geoscientific Model Development |
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12 |
container_issue |
7 |
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3241 |
op_container_end_page |
3281 |
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