Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model
High- and low-resolution coupled climate model simulations are analyzed to investigate the impact of model resolution on South Atlantic Ocean Heat Content (OHC) variability at interannual time scale and the associated physical mechanisms. In both models, ocean heat transport convergence is the main...
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ftpubman:oai:pure.mpg.de:item_3179979 2023-08-27T04:11:59+02:00 Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model Gronholz, A. Dong, S. Lee, S. Lopez, H. Goni, G. Baringer, M. 2020-12-16 application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document http://hdl.handle.net/21.11116/0000-0007-9E46-9 http://hdl.handle.net/21.11116/0000-0007-9E4A-5 http://hdl.handle.net/21.11116/0000-0007-9E4B-4 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GL089908 http://hdl.handle.net/21.11116/0000-0007-9E46-9 http://hdl.handle.net/21.11116/0000-0007-9E4A-5 http://hdl.handle.net/21.11116/0000-0007-9E4B-4 info:eu-repo/semantics/openAccess Geophysical Research Letters info:eu-repo/semantics/article 2020 ftpubman https://doi.org/10.1029/2020GL089908 2023-08-02T01:43:48Z High- and low-resolution coupled climate model simulations are analyzed to investigate the impact of model resolution on South Atlantic Ocean Heat Content (OHC) variability at interannual time scale and the associated physical mechanisms. In both models, ocean heat transport convergence is the main driver of OHC variability on interannual time scales. However, the origin of the meridional heat transport (MHT) convergence anomalies differs in the two models. In the high-resolution model, OHC variability is dominated by MHT from the south. This is in contrast to the low-resolution model, where OHC variability is largely controlled by MHT from the north. In the low-resolution simulation, both the Ekman and geostrophic transports contribute to the OHC variability, whereas in the high-resolution model, the geostrophic transport dominates. These differences highlight the importance of model resolution to appropriately represent ocean dynamics in the South Atlantic Ocean and associated impacts on regional and global climate. © 2020. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper South Atlantic Ocean Max Planck Society: MPG.PuRe Geophysical Research Letters 47 23 |
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Open Polar |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
English |
description |
High- and low-resolution coupled climate model simulations are analyzed to investigate the impact of model resolution on South Atlantic Ocean Heat Content (OHC) variability at interannual time scale and the associated physical mechanisms. In both models, ocean heat transport convergence is the main driver of OHC variability on interannual time scales. However, the origin of the meridional heat transport (MHT) convergence anomalies differs in the two models. In the high-resolution model, OHC variability is dominated by MHT from the south. This is in contrast to the low-resolution model, where OHC variability is largely controlled by MHT from the north. In the low-resolution simulation, both the Ekman and geostrophic transports contribute to the OHC variability, whereas in the high-resolution model, the geostrophic transport dominates. These differences highlight the importance of model resolution to appropriately represent ocean dynamics in the South Atlantic Ocean and associated impacts on regional and global climate. © 2020. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Gronholz, A. Dong, S. Lee, S. Lopez, H. Goni, G. Baringer, M. |
spellingShingle |
Gronholz, A. Dong, S. Lee, S. Lopez, H. Goni, G. Baringer, M. Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model |
author_facet |
Gronholz, A. Dong, S. Lee, S. Lopez, H. Goni, G. Baringer, M. |
author_sort |
Gronholz, A. |
title |
Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model |
title_short |
Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model |
title_full |
Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model |
title_fullStr |
Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model |
title_full_unstemmed |
Interannual variability of the South Atlantic Ocean heat content in a high-resolution versus a low-resolution general circulation model |
title_sort |
interannual variability of the south atlantic ocean heat content in a high-resolution versus a low-resolution general circulation model |
publishDate |
2020 |
url |
http://hdl.handle.net/21.11116/0000-0007-9E46-9 http://hdl.handle.net/21.11116/0000-0007-9E4A-5 http://hdl.handle.net/21.11116/0000-0007-9E4B-4 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Geophysical Research Letters |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GL089908 http://hdl.handle.net/21.11116/0000-0007-9E46-9 http://hdl.handle.net/21.11116/0000-0007-9E4A-5 http://hdl.handle.net/21.11116/0000-0007-9E4B-4 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020GL089908 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
23 |
_version_ |
1775355710607982592 |