Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment
A sea ice model is an important component of an Earth system model, which is an essential tool for the study of sea ice, including its internal processes, interactions with other components, and projected future changes. This paper evaluates a simulation of sea ice by the Chinese Academy of Sciences...
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ftmdpi:oai:mdpi.com:/2073-4433/13/7/1056/ 2023-08-20T04:02:14+02:00 Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment Xin Gao Peng Fan Jiangbo Jin Juanxiong He Mirong Song He Zhang Kece Fei Minghua Zhang Qingcun Zeng agris 2022-07-02 application/pdf https://doi.org/10.3390/atmos13071056 EN eng Multidisciplinary Digital Publishing Institute Climatology https://dx.doi.org/10.3390/atmos13071056 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 13; Issue 7; Pages: 1056 CAS-ESM 2.0 sea ice seasonal cycle sea ice mass budget Text 2022 ftmdpi https://doi.org/10.3390/atmos13071056 2023-08-01T05:35:22Z A sea ice model is an important component of an Earth system model, which is an essential tool for the study of sea ice, including its internal processes, interactions with other components, and projected future changes. This paper evaluates a simulation of sea ice by the Chinese Academy of Sciences Earth System Model version 2 (CAS-ESM 2.0), focusing on a historical simulation in the Coupled Model Intercomparison Project Phase 6 (CMIP6). Compared with the observations, CAS-ESM 2.0 reproduces reasonable seasonal cycle features and the climatological spatial distribution of Arctic and Antarctic sea ice, including sea ice extent (SIE), sea ice concentration, and sea ice thickness and motion. However, the SIE in CAS-ESM 2.0 is too large in winter and too low in summer in both hemispheres, indicating higher seasonal variations of the model relative to observations. Further sea ice mass budget diagnostics show that basal growth contributes most to ice increase in both hemispheres, basal melt and top melt make a comparable contribution to Arctic ice decrease, and basal melt plays a dominant role in Antarctic ice loss. This, combined with surface air temperature (SAT) and sea surface temperature (SST) biases, suggests that the excess of sea ice simulated in wintertime in both hemispheres and the lower SIE simulated in the Antarctic summer are mainly attributable to the bias in SST, whereas the lower SIE simulated in the Arctic summer is probably due to the combined effects of both the SST and SAT biases. Text Antarc* Antarctic Arctic Sea ice MDPI Open Access Publishing Antarctic Arctic The Antarctic Atmosphere 13 7 1056 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
CAS-ESM 2.0 sea ice seasonal cycle sea ice mass budget |
spellingShingle |
CAS-ESM 2.0 sea ice seasonal cycle sea ice mass budget Xin Gao Peng Fan Jiangbo Jin Juanxiong He Mirong Song He Zhang Kece Fei Minghua Zhang Qingcun Zeng Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment |
topic_facet |
CAS-ESM 2.0 sea ice seasonal cycle sea ice mass budget |
description |
A sea ice model is an important component of an Earth system model, which is an essential tool for the study of sea ice, including its internal processes, interactions with other components, and projected future changes. This paper evaluates a simulation of sea ice by the Chinese Academy of Sciences Earth System Model version 2 (CAS-ESM 2.0), focusing on a historical simulation in the Coupled Model Intercomparison Project Phase 6 (CMIP6). Compared with the observations, CAS-ESM 2.0 reproduces reasonable seasonal cycle features and the climatological spatial distribution of Arctic and Antarctic sea ice, including sea ice extent (SIE), sea ice concentration, and sea ice thickness and motion. However, the SIE in CAS-ESM 2.0 is too large in winter and too low in summer in both hemispheres, indicating higher seasonal variations of the model relative to observations. Further sea ice mass budget diagnostics show that basal growth contributes most to ice increase in both hemispheres, basal melt and top melt make a comparable contribution to Arctic ice decrease, and basal melt plays a dominant role in Antarctic ice loss. This, combined with surface air temperature (SAT) and sea surface temperature (SST) biases, suggests that the excess of sea ice simulated in wintertime in both hemispheres and the lower SIE simulated in the Antarctic summer are mainly attributable to the bias in SST, whereas the lower SIE simulated in the Arctic summer is probably due to the combined effects of both the SST and SAT biases. |
format |
Text |
author |
Xin Gao Peng Fan Jiangbo Jin Juanxiong He Mirong Song He Zhang Kece Fei Minghua Zhang Qingcun Zeng |
author_facet |
Xin Gao Peng Fan Jiangbo Jin Juanxiong He Mirong Song He Zhang Kece Fei Minghua Zhang Qingcun Zeng |
author_sort |
Xin Gao |
title |
Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment |
title_short |
Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment |
title_full |
Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment |
title_fullStr |
Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment |
title_full_unstemmed |
Evaluation of Sea Ice Simulation of CAS-ESM 2.0 in Historical Experiment |
title_sort |
evaluation of sea ice simulation of cas-esm 2.0 in historical experiment |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13071056 |
op_coverage |
agris |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Arctic Sea ice |
genre_facet |
Antarc* Antarctic Arctic Sea ice |
op_source |
Atmosphere; Volume 13; Issue 7; Pages: 1056 |
op_relation |
Climatology https://dx.doi.org/10.3390/atmos13071056 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos13071056 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
7 |
container_start_page |
1056 |
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1774712617735028736 |