A Study on the Physical Processes of the Formation of the ENSO Cycle

ZONG Haifeng

doi:10.1007/s00376-014-3224-2

Abstract:

The physical processes involved in the formation of the ENSO cycle, as well as the possible roles of the Hadley circulation (HC), Walker circulation (WC), and the propagating waves of the Southern Oscillation/Northern Oscillation (SO/NO) in its formation, were studied using composite and regression methods. The analysis showed that the convection and heat release triggered by ENSO in the central-eastern equatorial Pacific are the primary drivers for the 3-5 year cycle of the HC, WC and the meridional/zonal circulation. The HC plays a key role in the influence of ENSO on the circulation outside the tropics through angular momentum transportation. Meanwhile, the feedback effects of the anomalous circulation in the mid-high latitudes on ENSO are accomplished by the propagating waves of SO/NO associated with the evolutions of HC and WC. These propagating waves are the main agents of the connections among the meridional/zonal circulation outside the tropics, the Asian/Australian monsoon, the anomalous easterly/westerly winds over the tropical Pacific, and ENSO events. It was found that the 3-5 year cycle of the meridional/zonal circulation forced by ENSO is quite different from the several-week variation of the circulation index triggered by the inner dynamic processes of the atmosphere. The former occurs at the global scale with a definite flow pattern, while the latter occurs only in a wide area without a definite flow pattern. Finally, a physical model for the formation of the ENSO cycle composed of two fundamental processes at the basin and global scale, respectively, is proposed.

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A Study on the Physical Processes of the Formation of the ENSO Cycle

Corresponding author: ZONG Haifeng, zhf@mail.iap.ac.cn

1. International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029

Manuscript received: 2013-11-18

Manuscript revised: 2014-03-05

Fund Project: The author thanks Professor CHEN Lieting and Professor JI Liren for their help in revising the paper. This work was jointly supported by the National Natural Science Foundation of China (Grant No. 41375055), the National Basic Research Program of China (Grant No. 2012CB957804), the Key Technologies R&D Program (Grant No. 2009BAC51B02), and the State Grid Science & Technology Project (GC71-13-007).

Abstract: The physical processes involved in the formation of the ENSO cycle, as well as the possible roles of the Hadley circulation (HC), Walker circulation (WC), and the propagating waves of the Southern Oscillation/Northern Oscillation (SO/NO) in its formation, were studied using composite and regression methods. The analysis showed that the convection and heat release triggered by ENSO in the central-eastern equatorial Pacific are the primary drivers for the 3-5 year cycle of the HC, WC and the meridional/zonal circulation. The HC plays a key role in the influence of ENSO on the circulation outside the tropics through angular momentum transportation. Meanwhile, the feedback effects of the anomalous circulation in the mid-high latitudes on ENSO are accomplished by the propagating waves of SO/NO associated with the evolutions of HC and WC. These propagating waves are the main agents of the connections among the meridional/zonal circulation outside the tropics, the Asian/Australian monsoon, the anomalous easterly/westerly winds over the tropical Pacific, and ENSO events. It was found that the 3-5 year cycle of the meridional/zonal circulation forced by ENSO is quite different from the several-week variation of the circulation index triggered by the inner dynamic processes of the atmosphere. The former occurs at the global scale with a definite flow pattern, while the latter occurs only in a wide area without a definite flow pattern. Finally, a physical model for the formation of the ENSO cycle composed of two fundamental processes at the basin and global scale, respectively, is proposed.

Keywords:

ENSO cycle,
meridional/zonal circulation,
Hadley circulation,
propagating waves,
Southern Oscillation/Northern Oscillation

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Battisti, D. S., A. C. Hirst, 1989: Interannual variability in the tropical atmosphere ocean system: Influence of the basic state and ocean geometry. J. Atmos. Sci., 46, 1687-1712.

Bjerknes, J., 1966: A possible response of the atmospheric hadley circulation to equatorial anomalies of ocean temperature. Tellus, 18, 820-829.

Bjerknes, J., 1969: Atmospheric teleconnections from the equatorial Pacific. Mon. Wea. Rev., 97, 163-172.

Bueh, C., L. R. Ji, 1999: Abnormal East Asia winter monsoon and tropical Pacific SST anomalies. Chinese Science Bulletin, 44, 252-259. (in Chinese)

Cane, M. A., S. E. Zebiak, 1985: A theory for El Niňo and the Southern Oscillation. Science, 228, 1085-1087.

Chao, J. P., R. H. Zhang, 1988: The air-sea interaction waves in the tropics and their instabilities. Acta Meteorologica Sinica, 2, 275-287.

Chen, D., M. A. Cane, 2008: El Niňo prediction and predictability. J. Comput. Phys., 227, 3625-3640.

Chen, L. T., 1982: Interaction between the subtropical high over the North Pacific and the sea surface temperature of the eastern equatorial Pacific. Scientia Atmospherica Sinica, 6, 148-156. (in Chinese)

Chen, L. T., Z. Q. Zhan, 1984: Teleconnection of pressure anomaly between the east and west of the northern Pacific. Chinese Science Bulletin, 29, 481-483. (in Chinese)

Chen, L. T., Z. Fan, 1993: The southern oscillation/northern oscillation cycle associated with sea surface temperature in the equatorial Pacific. Adv. Atmos. Sci., 10, 353-364.

Chen, L. T., R. G. Wu, 2000a: The role of the Asian/Australian monsoons and the Southern/Northern oscillation in the ENSO cycle. Theor. Appl. Climatol., 65, 37-47.

Chen, L. T., R. G. Wu, 2000b: ENSO cycle associated with Asian/Australian monsoon and Southern/Northern Oscillation. Acta Meteorologica Sinica, 58, 168-178. (in Chinese)

Fu, Y. F., R. H. Huang, 1996: The effect of the westerly anomalies over the tropical Pacific on the occurrence of ENSO events. Scientia Atmospherica Sinica, 20, 641-654. (in Chinese)

Gill, A. E., 1980: Some simple solutions for heat-induced tropical circulation. Quart. J. Roy. Meteor. Soc., 106, 447-662.

Hirst, A. C., 1988: Slow instabilities in tropical ocean basin-global atmosphere models. J. Atmos. Sci., 45, 830-852.

Huang, R. H., Y. F. Fu, 1996: Some progresses and problems in the study on the dynamics of the ENSO cycle. Disastrous Climate, R. Huang, L. Chen, X. Weng, and Z. Song, Eds., China Meteorological Press, 172-188. (in Chinese)

Jin, Z. H., L. T. Chen, 1992: Contrastion relations between northern and southern with Pacific SST. Acta Oceanologica Sinica, 14, 19-27. (in Chinese)

Kalnay, E., and Coauthors, 1996: The NCEP/NCAR 40-year reanalysis project. Bull. Amer. Meteor. Soc., 77, 437-471.

Kao, H.-Y., J.-Y. Yu, 2009: Contrasting eastern-Pacific and central-Pacific types of ENSO. J. Climate, 22, 615-632.

Keen, R. A., 1982: The role of cross-equatorial tropical cyclone pairs in the southern oscillation. Mon. Wea. Rev., 110, 1405-1416.

Li, C. Y., 1988: Frequent actions of strong East Asian trough and occurrence of El Niňo events. Science in China, 32, 667-674. (in Chinese)

Li, C. Y., M. Q. Mu, 1998: Numerical simulations of anomalous winter monsoon in East Asia exciting ENSO. Scientia Atmospherica Sinica, 22, 481-490. (in Chinese)

Li, Y., X. Q. Yang, Q. Xie, 2010: Selective interaction between interannual variability of North Pacific subtropical high and ENSO cycle. Chinese Journal of Geophysics, 53, 1543-1553. (in Chinese)

Lu, J., G. Chen, D. M. W. Frierson, 2008: Response of the Zonal Mean Atmospheric Circulation to El Niňo versus Global Warming. J. Climate, 21, 5835-5851.

McCreary, J., P. Julian, 1983: A model of tropical ocean-atmosphere interaction. Mon. Wea. Rev., 111, 370-387.

Nitta, T., 1989: Global features of the Pacific-Japan Oscillation. Meteor. Atmos. Phys., 41, 5-12.

Philand er, S. G. H., T. Yamagata, R. C. Pacanowski, 1984: Unstable air-sea interactions in the tropics. J. Atmos. Sci., 41, 604-613.

Rasmusson, E. M., T. H. Carpenter, 1982: Variations in tropical sea surface temperature and surface wind fields associated with the Southern Oscillation/El Niňo. Mon. Wea. Rev., 110, 354-384.

Schopf, P. S., M. J. Suarez, 1988: Vacillations in a coupled ocean-atmosphere model. J. Atmos. Sci., 45, 549-566.

Seager, R., N. Harnik, Y. Kushnir, W. Robinson, J. Miller, 2003: Mechanisms of hemispherically symmetric climate variability. J. Climate, 16, 2960-2978.

Smith, T. M., R. W. Reynolds, T. C. Peterson, J. Lawrimore, 2008: Improvements to NOAA's historical merged land-ocean surface temperature analysis (1880-2006). J. Climate, 21, 2283-2296.

Suarez, M. J., P. S. Schopf, 1988: A delayed action oscillator for ENSO. J. Atmos. Sci., 45, 3283-3287.

Sun, D., F. Xue, T. J. Zhou, 2013: Impacts of two types of El Niňo on atmospheric circulation in the Southern Hemisphere. Adv. Atmos. Sci., 30, 1732-1742, doi: 10.1007/s00376-013-2287-9.

Tang, Y., 2002: Hybrid coupled models of the tropical Pacific: I. Interannual variability. Climate Dyn., 19, 331-342.

Walker, G. T., E. W. Bliss, 1932: World weather V. Mem. Roy. Meteor. Soc., 4, 53-84.

Wang, Z. G., R. N. Xing, X. R. Chen, 2004: Relationship of El Niňo with the anomalous westerly wind over equatorial Pacific. Chinese J. Atmos. Sci., 28, 441-454. (in Chinese)

Wu, A., W. W. Hsieh, B. Tang, 2006: Neural network forecasts of the tropical Pacific sea surface temperatures. Neural Networks : The Official Journal of the International Neural Network Society, 19, 145-154.

Wu, R. G., L. T. Chen, 1995: 3-5 year time scale evolution of global 1000 hPa height anomaly during 1980-1989. Scientia Atmospherica Sinica, 19, 575-585. (in Chinese)

Wu, R. G., J. L. Chen, W. Chen, 2012: Different types of ENSO influences on the Indian summer monsoon variability. J. Climate, 25, 903-920.

Wyrtki, K., 1975: El Niňo-the dynamic response of the equatorial Pacific ocean to atmospheric forcing. J. Phys. Oceanogr., 5, 572-584

Xie, S.-P., Q. Xie, D. Wang, W. T. Liu, 2003: Summer upwelling in the South China Sea and its role in regional climate variations. J. Geophys. Res., 108(C8), doi: 10.1029/2003JC001867.

Xu, K., C. W. Zhu, J. H. He, 2013: Two types of El Niňo-related Southern Oscillation and their different impacts on global Land precipitation. Adv. Atmos. Sci., 30, 1743-1757, doi: 10.1007/s00376-013-2272-3

Ye, D. Z., B. Z. Zhu, 1958: Some Basic Problems of Atmospheric Circulation. Science Press, 159 pp. (in Chinese)

Yun, K.-S., K.-H. Seo, K.-J. Ha, 2008: Relationship between ENSO and northward propagating intraseasonal oscillation in the east Asian summer monsoon system. J. Geophys. Res., 113(D14), doi: 10.1029/2008JD009901.

Zhang, R. H., J. P. Chao, 1993: Unstable tropical air-sea interaction waves and their physical mechanisms. Adv. Atmos. Sci., 10, 61-70.

Zhang, Z. Q., Y. H. Ding, Z. C. Zhao, 2000: On the westerly wind outbursts in equatorial western Pacific during the onset and development phases of ENSO and before. Acta Meteorologica Sinica, 58, 11-25. (in Chinese)

Zhu, J. S., G.-Q. Zhou, R.-H. Zhang, Z. B. Sun, 2013: Improving ENSO prediction in a hybrid coupled model with an embedded entrainment temperature parameterisation. Inter. J. Climatol., 33, 343-355.

Zong, H. F., L. T. Chen, 2013: Characteristics of the atmospheric circulation and sea surface temperature for different modes of intraseasonal variation of summer monsoon rain belt in eastern China. Chinese J. Atmos. Sci., 37, 1072-1082. (in Chinese)

Zong, H. F., Q. Y. Zhang, L. T. Chen, 2008: A study of the processes of East Asia-Pacific teleconnection pattern formation and the relationship to ENSO. Chinese J. Atmos. Sci., 32, 220-230. (in Chinese)

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[19]	Chen Lieting, 1985: THE SOUTHERN OSCILLATION AND ITS ASSOCIATEDSUMMER RAINFALLS IN CHINA-CONCURRENTDISCUSSION OF THE RELATIONSHIP BETWEEN THE SOURTHERN OSCILLATION AND WALKER CIRCULATION, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 542-548. doi: 10.1007/BF02678752
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A Study on the Physical Processes of the Formation of the ENSO Cycle

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