Interannual variability of the spring Wyrtki Jet

被引：3
作者：
Deng, Kangping [1 ]
Cheng, Xuhua [1 ,2 ,3 ]
Feng, Tao [1 ]
Ma, Tian [1 ]
Duan, Wei [1 ]
Chen, Jiajia [1 ]
机构：
[1] Hohai Univ, Nanjing 210098, Peoples R China
[2] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
[3] Hohai Univ, Minist Educ, Key Lab Coastal Disaster & Def, Nanjing 210098, Peoples R China
来源：
JOURNAL OF OCEANOLOGY AND LIMNOLOGY | 2021年 / 39卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Equatorial Indian Ocean; Wyrtki Jet; interannual variability; El Niñ o; La Niñ a Modoki;
D O I：
10.1007/s00343-020-9330-3
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Features of the interannual variability of the spring Wyrtki Jet in the tropical Indian Ocean are revealed using observation data and model output. The results show that the jet has significant interannual variation, which has a significant correlation with winter El Nino Modoki index ( R =0.62). During spring after an El Nino (La Nina) Modoki event, the Wyrtki Jet has a positive (negative) anomaly, forced by a westerly (easterly) wind anomaly. The result of a linear-continuously stratified model shows that the first two baroclinic modes explain most of the interannual variability of the spring Wyrtki Jet (~70%) and the third to fifth modes together account for approximately 30%. Surface wind anomalies in the tropical Indian Ocean are related to the Walker circulation anomaly associated with El Nino/La Nina Modoki. The interannual variability of the spring Wyrtki Jet has an evident impact on sea surface salinity transport before the onset phase of the summer monsoon in the Indian Ocean.
引用
收藏
页码：26 / 44
页数：19
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