Meridional Wind Stress Anomalies over Tropical Pacific and the Onset of El Nino. Part Ⅰ: Data Analysis

Zhang Renhe; Zhao Gang; Tan Yanke

doi:10.1007/s00376-001-0038-9

Impact Factor: 5.8

Volume 18 Issue 4

Jul. 2001

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 2001 > 18(4): 467-480

Meridional Wind Stress Anomalies over Tropical Pacific and the Onset of El Nino. Part Ⅰ: Data Analysis

1.
LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080

doi: 10.1007/s00376-001-0038-9

Abstract
References
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Abstract:
By using correlation analysis and singular value decomposition (SVD) methods, diagnostic studies are made to investigate the relationship between the meridional wind stress anomalies over the tropical Pacific and El Nino events. The correlation of the sea surface temperature anomalies (SSTA) in the NINO3 region (150°-90°W, 5°S-5°N) and the leading meridional wind stress anomalies shows that the NINO3 SSTA is significantly correlated with the anomalous meridional wind stress convergence in the equatorial eastern Pacific at the leading time of more than six months. With the reduction of the leading time, the correlation becomes stronger and the convergence area with statistical significance enlarges and extends to the west. The coupling patterns between SSTA in tropic Pacificand the leading meridional wind stress anomalies revealed by SVD show the similar feature to that revealed by the correlation analysis. The converging meridional wind stress about the equator in the eastern equatorial Pacific precedes the increasing of SSTA in the central and eastern equatorial Pacific as early as half a year or more. Compared to the leading zonal wind stress anomalies in the tropical western Pacific, it seems that the increasing of the NINO3 SSTA is more related to the convergence of the leading meridional wind stress anomalies in the eastern equatorial Pacific. It is suggested that preceding meridional wind stress anomalies may play an important role in the occurrence of El Nino events.
- Meridional wind stress,
- El Nino
References

[1]	Zhang Renhe, Zhao Gang, 2001: Meridional Wind Stress Anomalies over the Tropical Pacific and the Onset of El Ni?o Part Ⅱ: Dynamical Analysis, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 1053-1065. doi: 10.1007/s00376-001-0022-4
[2]	ZHU Jieshun, SUN Zhaobo, ZHOU Guangqing, 2007: A Note on the Role of Meridional Wind Stress Anomalies and Heat Flux in ENSO Simulations, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 729-738. doi: 10.1007/s00376-007-0729-y
[3]	LI Gen, REN Baohua, YANG Chengyun, ZHENG Jianqiu, 2010: Indices of El Nino and El Nino Modoki: An improved El Nino Modoki index, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 1210-1220. doi: 10.1007/s00376-010-9173-5
[4]	YUAN Yuan, ZHOU Wen, YANG Hui, LI Chongyin, 2008: Warming in the Northwestern Indian Ocean Associated with the El Ni\~no Event, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 246-252. doi: 10.1007/s00376-008-0246-7
[5]	Lu Riyu, Chan-Su Ryu, Buwen Dong, 2002: Associations between the Western North Pacific Monsoon and the South China Sea Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 12-24. doi: 10.1007/s00376-002-0030-z
[6]	Li'an Xie, Leonard J.Pietrafesa, Kejian Wu, 2002: Interannual and Decadal Variability of Landfalling Tropical Cyclones in the Southeast Coastal States of the United States, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 677-686. doi: 10.1007/s00376-002-0007-y
[7]	Chen Lieting, Fan Zhen, 1993: The Southern Oscillation / Northern Oscillation Cycle Associated with Sea Surface Temperature in the Equatorial Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 10, 353-364. doi: 10.1007/BF02658141
[8]	Wang Huijun, 1999: A Preliminary Study on the Polar Climate Predictability, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 361-366. doi: 10.1007/s00376-999-0015-2
[9]	Zhang Qin, Zhu Yufeng, Ni Yunqi, 1995: QBO Features of Tropical Pacific wind Stress Field with the Relation to El Nino, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 87-94. doi: 10.1007/BF02661290
[10]	Zhang Renhe, Akimasa Sumi, Masahide Kimoto, 1999: A Diagnostic Study of the Impact of El Nino on the Precipitation in China, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 229-241. doi: 10.1007/BF02973084
[11]	Fu Congbin, Dong Dongfeng, Ralph Slutz, Joseph Fletcher, 1988: EL NINO/SOUTHERN OSCILLATION SIGNALS IN THE GLOBAL TROPICAL OCEAN, ADVANCES IN ATMOSPHERIC SCIENCES, 5, 35-46. doi: 10.1007/BF02657344
[12]	Li Chongyin, 1990: Interaction between Anomalous Winter Monsoon in East Asia and El Nino Events, ADVANCES IN ATMOSPHERIC SCIENCES, 7, 36-46. doi: 10.1007/BF02919166
[13]	Shouhong WANG, MA Tian, 2011: El Nino Southern Oscillation as Sporadic Oscillations between Metastable States, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 612-622. doi: 10.1007/s00376-010-9089-0
[14]	ZHANG Rong-Hua, ZHENG Fei, PEI Yuhua, ZHENG Quanan, WANG Zhanggui, 2012: Modulation of El Nino-Southern Oscillation by Freshwater Flux and Salinity Variability in the Tropical Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 647-660. doi: 10.1007/s00376-012-1235-4
[15]	Jong-Suk KIM, ZHOU Wen, Ho Nam CHEUNG, Chak Hang CHOW, 2013: Variability and Risk Analysis of Hong Kong Air Quality Based on Monsoon and El Nino Conditions, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 280-290. doi: 10.1007/s00376-012-2074-z
[16]	XU Hui, DUAN Wansuo, 2008: What Kind of Initial Errors Cause the Severest Prediction Uncertainty of El Nino in Zebiak-Cane Model, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 577-584. doi: 10.1007/s00376-008-0577-4
[17]	ZHANG Zuqiang, ZHANG Renhe, Song YANG, 2007: Roles of Multi-Scale Disturbances over the Tropical North Pacific in the Turnabout of 1997--98 El Nino, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 581-590. doi: 10.1007/s00376-007-0581-0
[18]	BAO Ming, HAN Rongqing, 2009: Delayed Impacts of the El Nino Episodes in the Central Pacific on the Summertime Climate Anomalies of Eastern China in 2003 and 2007, ADVANCES IN ATMOSPHERIC SCIENCES, 26, 553-563. doi: 10.1007/s00376-009-0553-7
[19]	Shi Neng, Luo Boliang, 1991: Telecorrelation of the 500 hPa Polar Circulation and El Nino / SO with the Temperature Fields in China, ADVANCES IN ATMOSPHERIC SCIENCES, 8, 289-298. doi: 10.1007/BF02919611
[20]	Ni Yunqi, Lin Yuanbi, 1990: Numerical Study for Characteristic Change of Asian Summer Monsoon Circulation and Its Influence Mechanism during the El Nino Period, ADVANCES IN ATMOSPHERIC SCIENCES, 7, 320-330. doi: 10.1007/BF03179764

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Manuscript History

Manuscript received: 10 July 2001

Manuscript revised: 10 July 2001

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Meridional Wind Stress Anomalies over Tropical Pacific and the Onset of El Nino. Part Ⅰ: Data Analysis

1. LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080

Manuscript received: 2001-07-10
Manuscript revised: 2001-07-10

Abstract: By using correlation analysis and singular value decomposition (SVD) methods, diagnostic studies are made to investigate the relationship between the meridional wind stress anomalies over the tropical Pacific and El Nino events. The correlation of the sea surface temperature anomalies (SSTA) in the NINO3 region (150°-90°W, 5°S-5°N) and the leading meridional wind stress anomalies shows that the NINO3 SSTA is significantly correlated with the anomalous meridional wind stress convergence in the equatorial eastern Pacific at the leading time of more than six months. With the reduction of the leading time, the correlation becomes stronger and the convergence area with statistical significance enlarges and extends to the west. The coupling patterns between SSTA in tropic Pacificand the leading meridional wind stress anomalies revealed by SVD show the similar feature to that revealed by the correlation analysis. The converging meridional wind stress about the equator in the eastern equatorial Pacific precedes the increasing of SSTA in the central and eastern equatorial Pacific as early as half a year or more. Compared to the leading zonal wind stress anomalies in the tropical western Pacific, it seems that the increasing of the NINO3 SSTA is more related to the convergence of the leading meridional wind stress anomalies in the eastern equatorial Pacific. It is suggested that preceding meridional wind stress anomalies may play an important role in the occurrence of El Nino events.

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