南海海温在两类El Niño衰退期的季节响应差异

doi:10.11978/2016024

热带海洋学报 ›› 2017, Vol. 36 ›› Issue (1): 1-8.doi: 10.11978/2016024CSTR: 32234.14.2016024

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南海海温在两类El Niño衰退期的季节响应差异

陈梦燕^1,², 王鑫¹(), 刘钦燕¹, 谭伟³

1. 热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州510301
2. 中国科学院大学, 北京 100049
3. 河海大学海洋学院, 江苏南京 210098;

收稿日期:2016-03-02 修回日期:2016-04-17 出版日期:2017-01-18 发布日期:2017-01-19
作者简介:
作者简介：陈梦燕(1990—), 女, 湖南省岳阳市人, 硕士在读, 主要研究方向为海气相互作用。E-mail:mychen@scsio.ac.cn
基金资助:
中国科学院国家外国专家局创新团队国际合作伙伴计划;中国科学院战略性先导科技专项(XDA11010403);国家自然科学基金项目(41376025、41422601、41576012)

Different SST seasonally variability in the South China Sea during the decaying year of the two types of El Niño

Mengyan CHEN^1,², Xin WANG¹(), Qinyan LIU¹, Wei TAN³

1. State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences), Guangzhou 510301, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Institute of Physical Oceanography, Hohai University, Nanjing 210098, China;

Received:2016-03-02 Revised:2016-04-17 Online:2017-01-18 Published:2017-01-19
Supported by:
Chinese Academy of Sciences/State Administration of Foreign Experts Affairs (CAS/SAFEA) International Partnership Program for Creative Research Teams, Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11010403);National Natural Science Foundation of China (41376025, 41422601, 41576012)

摘要/Abstract

摘要：

研究结果发现南海海温对热带太平洋东部型和中部型厄尔尼诺(El Niño) 的季节性响应有明显的时空差异。就时间演变而言和前人研究的结论基本一致: 在两类El Niño事件发展年的冬季和衰退年的夏季, 南海海温都会出现暖海温异常现象。就空间特征而言: 东部型El Niño事件发生后, 南海的第一次增暖中心出现在115°E以西海域, 此后暖海温异常中心会向南海的东部偏移; 第二次增暖发生时, 其最大增暖中心位于110°E以东的海域; 而在中部型El Niño事件时, 南海的两次增暖中心都处在115°E以西海域。南海的风场异常分布不同导致了南海在两类El Niño事件衰退年夏季的暖异常出现空间差异。进一步机理分析表明, 南海在东部型El Niño事件衰退年夏季的增暖主要是受印度洋海盆模态(India ocean basin mode, IOBM)的影响; 而南海在中部型El Niño事件衰退年夏季的增暖主要是由于热带中太平洋暖海温的影响。

关键词: 南海增暖, 东部型El Niño, 中部型El Niño

Abstract:

This study suggests that the sea surface temperature (SST) in the South China Sea (SCS) has different temporal and spatial characteristics in response to the eastern Pacific (EP) El Niño and central Pacific (CP) El Niño. Temporal features are consistent with previous research: the warm SST anomalies located in the SCS during winter of the developing year and summer of the decaying year of El Niño. As for spatial features, the first significant warming peak is confined to the west of 115°E for EP El Niño events, then the warm SST anomaly center propagate to the eastern SCS, and the second warming peak is located to the east of 110°E. But the double warming peaks are limited to the west of 115°E for CP El Niño events. Different wind anomaly fields during the summer of the decaying year of the two types of El Niño led to different locations of the warm SST anomalies in the SCS. Further physical mechanism analysis show that the second significant warming of the SCS SST during the EP El Niño is associated with the India Ocean basin mode, while the second warming during the CP El Niño is under the influence of the CP El Niño.

Key words: South China Sea warming, Eastern Pacific El Niño, Central Pacific El Niño

陈梦燕, 王鑫, 刘钦燕, 谭伟. 南海海温在两类El Niño衰退期的季节响应差异[J]. 热带海洋学报, 2017, 36(1): 1-8.

Mengyan CHEN, Xin WANG, Qinyan LIU, Wei TAN. Different SST seasonally variability in the South China Sea during the decaying year of the two types of El Niño[J]. Journal of Tropical Oceanography, 2017, 36(1): 1-8.

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南海海温在两类El Niño衰退期的季节响应差异

Different SST seasonally variability in the South China Sea during the decaying year of the two types of El Niño

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