Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2)
This paper presents global comparisons of fundamental global climate variables from a suite of four pairs of matched low- and high-resolution ocean and sea-ice simulations that are obtained following the OMIP-2 protocol (Griffies et al., 2016) and integrated for one cycle (1958–2018) of the JRA55-do...
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ftcopernicus:oai:publications.copernicus.org:gmdd82761 2023-05-15T13:55:28+02:00 Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2) Chassignet, Eric P. Yeager, Stephen G. Fox-Kemper, Baylor Bozec, Alexandra Castruccio, Fred Danabasoglu, Gokhan Kim, Who M. Koldunov, Nikolay Li, Yiwen Lin, Pengfei Liu, Hailong Sein, Dmitry Sidorenko, Dmitry Wang, Qiang Xu, Xiaobiao 2020-03-11 application/pdf https://doi.org/10.5194/gmd-2019-374 https://gmd.copernicus.org/preprints/gmd-2019-374/ eng eng doi:10.5194/gmd-2019-374 https://gmd.copernicus.org/preprints/gmd-2019-374/ eISSN: 1991-9603 Text 2020 ftcopernicus https://doi.org/10.5194/gmd-2019-374 2020-07-20T16:22:21Z This paper presents global comparisons of fundamental global climate variables from a suite of four pairs of matched low- and high-resolution ocean and sea-ice simulations that are obtained following the OMIP-2 protocol (Griffies et al., 2016) and integrated for one cycle (1958–2018) of the JRA55-do atmospheric state and runoff dataset (Tsujino et al., 2018). Our goal is to assess the robustness of climate-relevant improvements in ocean simulations (mean and variability) associated with moving from coarse (~ 1º) to eddy-resolving (~ 0.1º) horizontal resolutions. The models are diverse in their numerics and parameterizations, but each low-resolution and high-resolution pair of models is matched so as to isolate, to the extent possible, the effects of horizontal resolution. A variety of observational datasets are used to assess the fidelity of simulated temperature and salinity, sea surface height, kinetic energy, heat and volume transports, and sea ice distribution. This paper provides a crucial benchmark for future studies comparing and improving different schemes in any of the models used in this study or similar ones. The biases in the low-resolution simulations are familiar and their gross features – position, strength, and variability of western boundary currents, equatorial currents, and Antarctic Circumpolar Current – are significantly improved in the high-resolution models. However, despite the fact that the high-resolution models "resolve" most of these features, the improvements in temperature or salinity are inconsistent among the different model families and some regions show increased bias over their low-resolution counterparts. Greatly enhanced horizontal resolution does not deliver unambiguous bias improvement in all regions for all models. Text Antarc* Antarctic Sea ice Copernicus Publications: E-Journals Antarctic |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
This paper presents global comparisons of fundamental global climate variables from a suite of four pairs of matched low- and high-resolution ocean and sea-ice simulations that are obtained following the OMIP-2 protocol (Griffies et al., 2016) and integrated for one cycle (1958–2018) of the JRA55-do atmospheric state and runoff dataset (Tsujino et al., 2018). Our goal is to assess the robustness of climate-relevant improvements in ocean simulations (mean and variability) associated with moving from coarse (~ 1º) to eddy-resolving (~ 0.1º) horizontal resolutions. The models are diverse in their numerics and parameterizations, but each low-resolution and high-resolution pair of models is matched so as to isolate, to the extent possible, the effects of horizontal resolution. A variety of observational datasets are used to assess the fidelity of simulated temperature and salinity, sea surface height, kinetic energy, heat and volume transports, and sea ice distribution. This paper provides a crucial benchmark for future studies comparing and improving different schemes in any of the models used in this study or similar ones. The biases in the low-resolution simulations are familiar and their gross features – position, strength, and variability of western boundary currents, equatorial currents, and Antarctic Circumpolar Current – are significantly improved in the high-resolution models. However, despite the fact that the high-resolution models "resolve" most of these features, the improvements in temperature or salinity are inconsistent among the different model families and some regions show increased bias over their low-resolution counterparts. Greatly enhanced horizontal resolution does not deliver unambiguous bias improvement in all regions for all models. |
format |
Text |
author |
Chassignet, Eric P. Yeager, Stephen G. Fox-Kemper, Baylor Bozec, Alexandra Castruccio, Fred Danabasoglu, Gokhan Kim, Who M. Koldunov, Nikolay Li, Yiwen Lin, Pengfei Liu, Hailong Sein, Dmitry Sidorenko, Dmitry Wang, Qiang Xu, Xiaobiao |
spellingShingle |
Chassignet, Eric P. Yeager, Stephen G. Fox-Kemper, Baylor Bozec, Alexandra Castruccio, Fred Danabasoglu, Gokhan Kim, Who M. Koldunov, Nikolay Li, Yiwen Lin, Pengfei Liu, Hailong Sein, Dmitry Sidorenko, Dmitry Wang, Qiang Xu, Xiaobiao Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2) |
author_facet |
Chassignet, Eric P. Yeager, Stephen G. Fox-Kemper, Baylor Bozec, Alexandra Castruccio, Fred Danabasoglu, Gokhan Kim, Who M. Koldunov, Nikolay Li, Yiwen Lin, Pengfei Liu, Hailong Sein, Dmitry Sidorenko, Dmitry Wang, Qiang Xu, Xiaobiao |
author_sort |
Chassignet, Eric P. |
title |
Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2) |
title_short |
Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2) |
title_full |
Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2) |
title_fullStr |
Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2) |
title_full_unstemmed |
Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2) |
title_sort |
impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the ocean model intercomparison project phase 2 (omip-2) |
publishDate |
2020 |
url |
https://doi.org/10.5194/gmd-2019-374 https://gmd.copernicus.org/preprints/gmd-2019-374/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
eISSN: 1991-9603 |
op_relation |
doi:10.5194/gmd-2019-374 https://gmd.copernicus.org/preprints/gmd-2019-374/ |
op_doi |
https://doi.org/10.5194/gmd-2019-374 |
_version_ |
1766262095603564544 |