Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity Change
The second version of the Chinese Academy of Sciences Earth System Model, CAS-ESM2-0, is a newcomer that contributes to Coupled Model Intercomparison Project simulations in the community. We evaluated the model’s performance in simulating the salinity for climatology, seasonal cycles, long-term tren...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/1/107 |
| _version_ | 1797446269538402304 |
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| author | Guancheng Li Lijing Cheng Xutao Wang |
| author_facet | Guancheng Li Lijing Cheng Xutao Wang |
| author_sort | Guancheng Li |
| collection | DOAJ |
| description | The second version of the Chinese Academy of Sciences Earth System Model, CAS-ESM2-0, is a newcomer that contributes to Coupled Model Intercomparison Project simulations in the community. We evaluated the model’s performance in simulating the salinity for climatology, seasonal cycles, long-term trends, and time series of climatic metrics by comparing it with the ensemble mean of available gridded observations. The results showed that CAS-ESM2-0 could reproduce large-scale patterns of ocean salinity climatology and seasonal variations, despite the fresh biases in the low- and mid-latitudes for climatology, stronger seasonal variation of sea surface salinity within 20° S–20° N, and large uncertainty with the zonal-band structure for 0–1000 m averaged salinity. For long-term changes, the model revealed increased contrast between the salinity of the Atlantic and Pacific basins. However, regional differences in locations and strengths for salinity pattern amplification suggest substantial uncertainty when simulating regional multidecadal salinity changes. The simulated variations in climate metrics for salinity pattern amplification are consistent with the observations and will continue to intensify until the end of this century. Our assessment provides new features of the CAS-ESM2-0 model and supports further studies on model development. |
| first_indexed | 2024-03-09T13:37:54Z |
| format | Article |
| id | doaj.art-2f07c87ed70d44b0b41d249762b81ed6 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T13:37:54Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-2f07c87ed70d44b0b41d249762b81ed62023-11-30T21:09:29ZengMDPI AGAtmosphere2073-44332023-01-0114110710.3390/atmos14010107Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity ChangeGuancheng Li0Lijing Cheng1Xutao Wang2Eco-Environmental Monitoring and Research Center, Pearl River Valley and South China Sea Ecology and Environment Administration, Ministry of Ecology and Environment, PRC, Guangzhou 510611, ChinaInternational Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaEco-Environmental Monitoring and Research Center, Pearl River Valley and South China Sea Ecology and Environment Administration, Ministry of Ecology and Environment, PRC, Guangzhou 510611, ChinaThe second version of the Chinese Academy of Sciences Earth System Model, CAS-ESM2-0, is a newcomer that contributes to Coupled Model Intercomparison Project simulations in the community. We evaluated the model’s performance in simulating the salinity for climatology, seasonal cycles, long-term trends, and time series of climatic metrics by comparing it with the ensemble mean of available gridded observations. The results showed that CAS-ESM2-0 could reproduce large-scale patterns of ocean salinity climatology and seasonal variations, despite the fresh biases in the low- and mid-latitudes for climatology, stronger seasonal variation of sea surface salinity within 20° S–20° N, and large uncertainty with the zonal-band structure for 0–1000 m averaged salinity. For long-term changes, the model revealed increased contrast between the salinity of the Atlantic and Pacific basins. However, regional differences in locations and strengths for salinity pattern amplification suggest substantial uncertainty when simulating regional multidecadal salinity changes. The simulated variations in climate metrics for salinity pattern amplification are consistent with the observations and will continue to intensify until the end of this century. Our assessment provides new features of the CAS-ESM2-0 model and supports further studies on model development.https://www.mdpi.com/2073-4433/14/1/107ocean salinityCAS-ESM2-0Coupled Model Intercomparison Project Phase 6 (CMIP6) |
| spellingShingle | Guancheng Li Lijing Cheng Xutao Wang Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity Change Atmosphere ocean salinity CAS-ESM2-0 Coupled Model Intercomparison Project Phase 6 (CMIP6) |
| title | Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity Change |
| title_full | Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity Change |
| title_fullStr | Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity Change |
| title_full_unstemmed | Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity Change |
| title_short | Evaluation of the CAS-ESM2-0 Performance in Simulating the Global Ocean Salinity Change |
| title_sort | evaluation of the cas esm2 0 performance in simulating the global ocean salinity change |
| topic | ocean salinity CAS-ESM2-0 Coupled Model Intercomparison Project Phase 6 (CMIP6) |
| url | https://www.mdpi.com/2073-4433/14/1/107 |
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