Rainfall sustains multiyear La Ni?a
文献类型：期刊论文
| 作者 | Tian, Feng2,3,4; Zhang, Rong-Hua4,5,6; Liu, Chuanyu2,3,4; Guan, Cong1 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2026-01-14 |
| 卷号 | 17期号:1页码:12 |
| DOI | 10.1038/s41467-026-68451-y |
| 通讯作者 | Tian, Feng(tianfeng@qdio.ac.cn) ; Zhang, Rong-Hua(rzhang@nuist.edu.cn) ; Liu, Chuanyu(chuanyu.liu@qdio.ac.cn) |
| 英文摘要 | Historical observations and climate models indicate that multiyear La Ni & ntilde;a events are growing more frequent. These prolonged events cumulatively alter tropical Pacific rainfall, which in turn affects regional mixed-layer salinity (MLS). However, how cumulative rainfall anomalies modulate multiyear La Ni & ntilde;a through salinity effects remains unclear. Here, using observations and model experiments, we show that the positive MLS anomalies in the western-central equatorial Pacific-driven initially by oceanic dynamical processes and later by rainfall deficits during multiyear La Ni & ntilde;a-reinforce these prolonged La Ni & ntilde;a events. Quantitatively, the rainfall reduction enhances La Ni & ntilde;a amplitude by 14% in the first year and 32% in the second year. MLS anomalies in the western-central equatorial Pacific initially trigger equatorial Kelvin wave adjustments, causing rapid surface cooling in the eastern equatorial Pacific. Subsequent slow ocean circulation responses lead to basin-wide equatorial Pacific cooling. The superposition of rapid and slow oceanic responses creates cumulative positive feedback from rainfall on the second-year La Ni & ntilde;a. These findings identify rainfall-salinity feedbacks as a key mechanism sustaining multiyear La Ni & ntilde;a events, with implications for ENSO prediction and hydrological cycle. |
| WOS关键词 | FRESH-WATER FLUX ; MIXED-LAYER MODEL ; SALINITY VARIABILITY ; EL-NINO ; OCEAN TEMPERATURE ; PACIFIC-OCEAN ; SURFACE ; IMPACT ; SIMULATION ; FEEDBACKS |
| 资助项目 | National Natural Science Foundation of China (National Science Foundation of China)[42476010] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001694154600010 |
| 出版者 | NATURE PORTFOLIO |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204805]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Tian, Feng; Zhang, Rong-Hua; Liu, Chuanyu |
| 作者单位 | 1.Hohai Univ, Coll Oceanog, Nanjing, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Lab Ocean Circulat & Waves, Qingdao, Peoples R China 4.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao, Peoples R China 5.Nanjing Univ Informat Sci & Technol, State Key Lab Climate Syst Predict & Risk Manageme, Nanjing, Peoples R China 6.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Feng,Zhang, Rong-Hua,Liu, Chuanyu,et al. Rainfall sustains multiyear La Ni?a[J]. NATURE COMMUNICATIONS,2026,17(1):12. |
| APA | Tian, Feng,Zhang, Rong-Hua,Liu, Chuanyu,&Guan, Cong.(2026).Rainfall sustains multiyear La Ni?a.NATURE COMMUNICATIONS,17(1),12. |
| MLA | Tian, Feng,et al."Rainfall sustains multiyear La Ni?a".NATURE COMMUNICATIONS 17.1(2026):12. |
入库方式： OAI收割
来源：海洋研究所
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