Variability of the Pacific subtropical cells under global warming in CMIP6 models
文献类型：CNKI期刊论文
| 作者 | Xue HAN; Junqiao FENG; Yunlong LU; Dunxin HU |
| 发表日期 | 2024-01-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | interior subtropical cell (STC) global warming Coupled Model Inter-comparison Project(CMIP6) western boundary transport |
| 英文摘要 | The Pacific subtropical cells(STCs) are shallow meridional overturning circulations connecting the tropics and subtropics, and are assumed to be an important driver of the tropical Pacific decadal variability. The variability of STCs under global warming is investigated using multimodal outputs from the latest phase of the Coupled Model Inter-comparison Project(CMIP6) and ocean reanalysis products. Firstly, the volume transport diagnostic analysis is employed to evaluate how coupled models and ocean reanalysis products reproduce interior STC transport. The variation of heat transport by the interior STC under the high-emissions warming scenarios is also analyzed. The results show that the multimodal-mean linear trends of the interior STC transport along 9°S and 9°N are-0.02 Sv/a and 0.04 Sv/a under global warming, respectively, which is mainly due to the combined effect of the strengthened upper oceanic stratification and the weakening of wind field. There is a compensation relationship between the interior STC and the western boundary transport in the future climate, and the compensation relationship of 9°S is more significant than that of 9°N. In addition, compared with ocean reanalysis products, the coupled models tend to underestimate the variability of the interior STC transport convergence, and thus may lose some sea surface temperature(SST) driving force, which may be the reason for the low STC-SST correlation simulated by the model. The future scenario simulation shows that the heat transport of interior STC is weakened under global warming, with a general agreement across models. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China (NSFC)(No. 41976027) |
| 卷 | v.42期:01页:26-42 |
| 语种 | 英文; |
| 分类号 | P467;P731.27 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/186923]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.UniversityofChineseAcademyofSciences 2.KeyLaboratoryofOceanCirculationandWaves,ChineseAcademyofSciences 3.InstituteofOceanology,ChineseAcademyofSciences 4.CenterforOceanMega-Science,ChineseAcademyofSciences 5.LaboratoryforOceanDynamicsandClimate,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) |
| 推荐引用方式 GB/T 7714 | Xue HAN,Junqiao FENG,Yunlong LU,et al. Variability of the Pacific subtropical cells under global warming in CMIP6 models. 2024. |
入库方式： OAI收割
来源：海洋研究所
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