Northern Tropical Atlantic Warming in El Nino Decaying Spring: Impacts of El Nino Amplitude
文献类型：期刊论文
| 作者 | Wu, Renguang1,2,3; He, Zhuoqi2,3,4,5; renguang@zju.edu.cn |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2019 |
| 卷号 | 46期号:23页码:14072 |
| 关键词 | Northern tropical Atlantic warming amplitude of El Nino events coupled model experiments latent heat flux impacts |
| DOI | 10.1029/2019GL085840 |
| 英文摘要 | The decay time of El Nino events is considered to be an important factor in determining whether or not the northern tropical Atlantic (NTA) warming occurs in boreal spring of El Nino decaying years. Through coupled model experiments with different types of sea surface temperature anomalies specified in the tropical Pacific domain, the present study illustrates that the NTA warming is larger and more persistent during slow than fast decaying El Nino events. The amplitude of El Nino events is shown to be another important factor in the difference of the spring NTA warming between slow and fast decaying El Nino events. The NTA warming difference is mainly attributed to the wind speed-related latent heat flux difference in preceding winter according to the model simulations and the observations. The differences of NTA wind and SST variations between slow and fast decay El Nino simulations are mostly consistent with the observations. Plain Language Summary Previous studies have shown that the northern tropical Atlantic Ocean is warmer in boreal spring of slow decaying El Nino events, but not following El Nino events that end before March. The difference suggests a critical effect of the El Nino decay time. The observed El Nino events show differences not only in the decay time but also in the amplitude of tropical Pacific sea surface temperature anomalies. The present study shows that the difference in the El Nino amplitude is comparably important as the difference in the El Nino decay time in leading to warmer northern tropical Atlantic Ocean in spring. The El Nino amplitude affects the intensity of wind anomalies over the North Atlantic Ocean and thus the magnitude of surface wind speed and latent heat flux anomalies in the northern tropical Atlantic region during boreal winter. The latent heat flux difference in turn leads to the spring sea surface temperature difference in the northern tropical Atlantic region. The present results based on model simulations are mostly consistent with the observations regarding the differences of wind and SST variations in the northern tropical Atlantic region between slow and fast decay El Nino events. |
| 资助机构 | National Key Research and development Program of China [2016YFA0600603]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41530425, 41775080, 41721004, 41506003, 41731173]; Innovation Academy of South China Sea Ecology and Environmental Engineering grant [ISEE2018PY06] ; National Key Research and development Program of China [2016YFA0600603]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41530425, 41775080, 41721004, 41506003, 41731173]; Innovation Academy of South China Sea Ecology and Environmental Engineering grant [ISEE2018PY06] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18183]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Zhejiang Univ, Sch Earth Sci, Hangzhou, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China 4.Chinese Acad Sci, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China 5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China 6.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Renguang,He, Zhuoqi,renguang@zju.edu.cn. Northern Tropical Atlantic Warming in El Nino Decaying Spring: Impacts of El Nino Amplitude[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(23):14072, 14081. |
| APA | Wu, Renguang,He, Zhuoqi,&renguang@zju.edu.cn.(2019).Northern Tropical Atlantic Warming in El Nino Decaying Spring: Impacts of El Nino Amplitude.GEOPHYSICAL RESEARCH LETTERS,46(23),14072. |
| MLA | Wu, Renguang,et al."Northern Tropical Atlantic Warming in El Nino Decaying Spring: Impacts of El Nino Amplitude".GEOPHYSICAL RESEARCH LETTERS 46.23(2019):14072. |
入库方式： OAI收割
来源：南海海洋研究所
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