A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR)
Abstract The MPI‐ESM1.2 is the latest version of the Max Planck Institute Earth System Model and is the baseline for the Coupled Model Intercomparison Project Phase 6 and current seasonal and decadal climate predictions. This paper evaluates a coupled higher‐resolution version (MPI‐ESM1.2‐HR) in com...
Published in: | Journal of Advances in Modeling Earth Systems |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union (AGU)
2018
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2017MS001217 https://doaj.org/article/ed4e367268334ec4a7b9912c7a691cae |
id |
ftdoajarticles:oai:doaj.org/article:ed4e367268334ec4a7b9912c7a691cae |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ed4e367268334ec4a7b9912c7a691cae 2023-05-15T17:25:19+02:00 A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) W. A. Müller J. H. Jungclaus T. Mauritsen J. Baehr M. Bittner R. Budich F. Bunzel M. Esch R. Ghosh H. Haak T. Ilyina T. Kleine L. Kornblueh H. Li K. Modali D. Notz H. Pohlmann E. Roeckner I. Stemmler F. Tian J. Marotzke 2018-07-01T00:00:00Z https://doi.org/10.1029/2017MS001217 https://doaj.org/article/ed4e367268334ec4a7b9912c7a691cae EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2017MS001217 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2017MS001217 https://doaj.org/article/ed4e367268334ec4a7b9912c7a691cae Journal of Advances in Modeling Earth Systems, Vol 10, Iss 7, Pp 1383-1413 (2018) Earth System Modeling climate variability Physical geography GB3-5030 Oceanography GC1-1581 article 2018 ftdoajarticles https://doi.org/10.1029/2017MS001217 2022-12-30T21:54:05Z Abstract The MPI‐ESM1.2 is the latest version of the Max Planck Institute Earth System Model and is the baseline for the Coupled Model Intercomparison Project Phase 6 and current seasonal and decadal climate predictions. This paper evaluates a coupled higher‐resolution version (MPI‐ESM1.2‐HR) in comparison with its lower‐resolved version (MPI‐ESM1.2‐LR). We focus on basic oceanic and atmospheric mean states and selected modes of variability, the El Niño/Southern Oscillation and the North Atlantic Oscillation. The increase in atmospheric resolution in MPI‐ESM1.2‐HR reduces the biases of upper‐level zonal wind and atmospheric jet stream position in the northern extratropics. This results in a decrease of the storm track bias over the northern North Atlantic, for both winter and summer season. The blocking frequency over the European region is improved in summer, and North Atlantic Oscillation and related storm track variations improve in winter. Stable Atlantic meridional overturning circulations are found with magnitudes of ~16 Sv for MPI‐ESM1.2‐HR and ~20 Sv for MPI‐ESM1.2‐LR at 26°N. A strong sea surface temperature bias of ~5°C along with a too zonal North Atlantic current is present in both versions. The sea surface temperature bias in the eastern tropical Atlantic is reduced by ~1°C due to higher‐resolved orography in MPI‐ESM‐HR, and the region of the cold‐tongue bias is reduced in the tropical Pacific. MPI‐ESM1.2‐HR has a well‐balanced radiation budget and its climate sensitivity is explicitly tuned to 3 K. Although the obtained reductions in long‐standing biases are modest, the improvements in atmospheric dynamics make this model well suited for prediction and impact studies. Article in Journal/Newspaper north atlantic current North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Pacific Journal of Advances in Modeling Earth Systems 10 7 1383 1413 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Earth System Modeling climate variability Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
Earth System Modeling climate variability Physical geography GB3-5030 Oceanography GC1-1581 W. A. Müller J. H. Jungclaus T. Mauritsen J. Baehr M. Bittner R. Budich F. Bunzel M. Esch R. Ghosh H. Haak T. Ilyina T. Kleine L. Kornblueh H. Li K. Modali D. Notz H. Pohlmann E. Roeckner I. Stemmler F. Tian J. Marotzke A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) |
topic_facet |
Earth System Modeling climate variability Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract The MPI‐ESM1.2 is the latest version of the Max Planck Institute Earth System Model and is the baseline for the Coupled Model Intercomparison Project Phase 6 and current seasonal and decadal climate predictions. This paper evaluates a coupled higher‐resolution version (MPI‐ESM1.2‐HR) in comparison with its lower‐resolved version (MPI‐ESM1.2‐LR). We focus on basic oceanic and atmospheric mean states and selected modes of variability, the El Niño/Southern Oscillation and the North Atlantic Oscillation. The increase in atmospheric resolution in MPI‐ESM1.2‐HR reduces the biases of upper‐level zonal wind and atmospheric jet stream position in the northern extratropics. This results in a decrease of the storm track bias over the northern North Atlantic, for both winter and summer season. The blocking frequency over the European region is improved in summer, and North Atlantic Oscillation and related storm track variations improve in winter. Stable Atlantic meridional overturning circulations are found with magnitudes of ~16 Sv for MPI‐ESM1.2‐HR and ~20 Sv for MPI‐ESM1.2‐LR at 26°N. A strong sea surface temperature bias of ~5°C along with a too zonal North Atlantic current is present in both versions. The sea surface temperature bias in the eastern tropical Atlantic is reduced by ~1°C due to higher‐resolved orography in MPI‐ESM‐HR, and the region of the cold‐tongue bias is reduced in the tropical Pacific. MPI‐ESM1.2‐HR has a well‐balanced radiation budget and its climate sensitivity is explicitly tuned to 3 K. Although the obtained reductions in long‐standing biases are modest, the improvements in atmospheric dynamics make this model well suited for prediction and impact studies. |
format |
Article in Journal/Newspaper |
author |
W. A. Müller J. H. Jungclaus T. Mauritsen J. Baehr M. Bittner R. Budich F. Bunzel M. Esch R. Ghosh H. Haak T. Ilyina T. Kleine L. Kornblueh H. Li K. Modali D. Notz H. Pohlmann E. Roeckner I. Stemmler F. Tian J. Marotzke |
author_facet |
W. A. Müller J. H. Jungclaus T. Mauritsen J. Baehr M. Bittner R. Budich F. Bunzel M. Esch R. Ghosh H. Haak T. Ilyina T. Kleine L. Kornblueh H. Li K. Modali D. Notz H. Pohlmann E. Roeckner I. Stemmler F. Tian J. Marotzke |
author_sort |
W. A. Müller |
title |
A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) |
title_short |
A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) |
title_full |
A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) |
title_fullStr |
A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) |
title_full_unstemmed |
A Higher‐resolution Version of the Max Planck Institute Earth System Model (MPI‐ESM1.2‐HR) |
title_sort |
higher‐resolution version of the max planck institute earth system model (mpi‐esm1.2‐hr) |
publisher |
American Geophysical Union (AGU) |
publishDate |
2018 |
url |
https://doi.org/10.1029/2017MS001217 https://doaj.org/article/ed4e367268334ec4a7b9912c7a691cae |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
north atlantic current North Atlantic North Atlantic oscillation |
genre_facet |
north atlantic current North Atlantic North Atlantic oscillation |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 10, Iss 7, Pp 1383-1413 (2018) |
op_relation |
https://doi.org/10.1029/2017MS001217 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2017MS001217 https://doaj.org/article/ed4e367268334ec4a7b9912c7a691cae |
op_doi |
https://doi.org/10.1029/2017MS001217 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
10 |
container_issue |
7 |
container_start_page |
1383 |
op_container_end_page |
1413 |
_version_ |
1766116720570793984 |