Subsurface Mixing Promotes Central Pacific-like ENSO in an Intermediate Coupled Model
文献类型：期刊论文
| 作者 | Hu, Qianwen3; Liu, Chuanyu2,3; Jia, Yanli1; Wang, Fan2,3; Gao, Chuan3; Zhang, Rong-hua4 |
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2026-05-01 |
| 卷号 | 39期号:10页码:2483-2504 |
| 关键词 | Diapycnal mixing ENSO Coupled models |
| ISSN号 | 0894-8755 |
| DOI | 10.1175/JCLI-D-25-0360.1 |
| 通讯作者 | Liu, Chuanyu(chuanyu.liu@qdio.ac.cn) |
| 英文摘要 | El Ni & ntilde;o-Southern Oscillation (ENSO) is experiencing changes, including an increasing occurrence of central Pacific (CP)-type ENSO and weakening of intensity, with mechanisms still under debate. Previous studies of subsurface turbulent mixing (ky) revealed close correlations between its interannual variability (k'y ) and ENSO evolution and its importance on CP-type ENSO. However, how to adequately represent k'y in climate models and how it modulates ENSO variability remain unclear. Here, a k'y model is first established by the singular value decomposition (SVD) method using outputs from a 40-yr simulation of high vertical resolution. We then incorporate it into an improved intermediate coupled model (ICM) of ENSO simulation and prediction. When k'y is incorporated into the ICM, the standard deviation of the Ni & ntilde;o-3.4 index is reduced by 0.5 degrees C compared with the original ICM with constant ky; the center of maximum in the interannual sea surface temperature anomaly (SSTA) shifts westward by 20 degrees longitude, favoring the emergence of CP-like ENSO. SSTA budget analysis revealed that the advection reduction determines the ENSO amplitude weakening and that vertical diffusion, which is intensified in the CP while suppressed in the eastern Pacific (EP), dominates the westward shift of ENSO pattern. These findings improve our understanding of the impact of k' y on ENSO variability, which may further help improve ENSO simulation by identifying k'y as a potential cause for the long-standing underestimation of CP-like ENSO and overestimation of ENSO amplitude in climate models. |
| WOS关键词 | TROPICAL INSTABILITY WAVES ; OCEAN RECHARGE PARADIGM ; EL-NINO ; SHEAR-FLOW ; TURBULENCE ; VARIABILITY ; PREDICTIONS ; LAYER ; SIMULATIONS ; TEMPERATURE |
| 资助项目 | National Natural Science Foundation of China[42430403] ; National Natural Science Foundation of China[42306005] ; National Key R&D Program of China[2022YFF0801404] ; Key Research Program of Laoshan Laboratory (LSL)[2022LSL010302] ; China Postdoctoral Science Foundation[2023M733524] ; Taishan Scholar Foundation of Shandong Province[tstp20250740] ; Jiangsu Innovation Research Group[JSSCTD 202346] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001741410800001 |
| 出版者 | AMER METEOROLOGICAL SOC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204889]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Liu, Chuanyu |
| 作者单位 | 1.Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI USA 2.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, State Key Lab Climate Syst Predict & Risk Manageme, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Qianwen,Liu, Chuanyu,Jia, Yanli,et al. Subsurface Mixing Promotes Central Pacific-like ENSO in an Intermediate Coupled Model[J]. JOURNAL OF CLIMATE,2026,39(10):2483-2504. |
| APA | Hu, Qianwen,Liu, Chuanyu,Jia, Yanli,Wang, Fan,Gao, Chuan,&Zhang, Rong-hua.(2026).Subsurface Mixing Promotes Central Pacific-like ENSO in an Intermediate Coupled Model.JOURNAL OF CLIMATE,39(10),2483-2504. |
| MLA | Hu, Qianwen,et al."Subsurface Mixing Promotes Central Pacific-like ENSO in an Intermediate Coupled Model".JOURNAL OF CLIMATE 39.10(2026):2483-2504. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。