Interannual Variability of Regional Hadley Circulation and El Nino Interaction

被引：8
|
作者：
Li, Yadi [1 ,2 ]
Xie, Shang-Ping [3 ]
Lian, Tao [4 ,5 ,6 ]
Zhang, Gan [7 ]
Feng, Juan [8 ]
Ma, Jing [9 ]
Peng, Qihua [3 ,10 ]
Wang, Wenzhu [1 ,2 ]
Hou, Yurong [1 ,2 ]
Li, Xichen [1 ]
机构：
[1] Chinese Acad Sci, Inst Atmospher Phys, Int Ctr Climate & Environm Sci ICCES, Beijing, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
[3] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA USA
[4] Minist Nat Resources, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou, Peoples R China
[5] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China
[6] Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai, Peoples R China
[7] Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ USA
[8] Beijing Normal Univ, Coll Global Change & Earth Syst Sci, State Key Lab Remote Sensing Sci, Beijing, Peoples R China
[9] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Nanjing, Peoples R China
[10] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China
来源：
GEOPHYSICAL RESEARCH LETTERS | 2023年 / 50卷 / 04期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
SEA-SURFACE TEMPERATURE; WESTERLY WIND BURSTS; ATMOSPHERIC CIRCULATION; SOUTHERN-OSCILLATION; ENSO TELECONNECTIONS; TROPICAL PACIFIC; SEASONAL CYCLE; OCEAN; CONNECTION; CLIMATE;
D O I：
10.1029/2022GL102016
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
El Nino-Southern Oscillation (ENSO) triggers variations of the global Hadley circulation (HC), while the latter may potentially feedback to ENSO events. Previous studies mainly investigated the interactions between ENSO and the global zonal-mean HC. Here, we present a regional perspective of HC variability by introducing zonal variations. Results show that El Nino intensifies the regional HC over the central-eastern Pacific, while weakening the regional HC over both the Indo-Pacific warm pool and the tropical Atlantic. The background seasonal cycle modulates the equatorial-asymmetric component of HC, with an anticlockwise (clockwise) asymmetric circulation over the central equatorial Pacific before (after) El Nino peaks. Remarkably, the asymmetric HC in boreal spring leads ENSO with a lead correlation of up to 0.68, mediated by the wind-evaporation-sea surface temperature (SST) feedback and other atmosphere-ocean dynamics. The antecedent HC anomaly may contribute to ENSO predictability.
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收藏
页数：11
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