The Impact of the Processes in the Southern Ocean on ENSO Development
Earth Sciences
Volume 8, Issue 2, April 2019, Pages: 117-125
Received: Apr. 1, 2019; Accepted: Apr. 26, 2019; Published: May 15, 2019
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Author
Vladimir Nikolaevich Stepanov, Department of Meteorology, University of Reading, Reading, UK; Hydrometeorological Center of Russia, Moscow, Russia
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Abstract
The paper presents the review of the model study of the role of the Southern Ocean in the processes of interaction of the ocean-atmosphere system at short time scales impacting the El Niño–Southern Oscillation (ENSO). It is shown that the variability of wind and atmospheric pressure over the Antarctic Circumpolar Current (ACC), together with the effects of the topography and coastline, significantly impact the development of ENSO events. A new paradigm for ENSO is proposed that allows explaining the current weakening of the interrelation between the variability in wind and water volume in the tropical warm pool in the western equatorial Pacific and the onset of ENSO. The weakness of the interrelationship between ENSO and variability in the equatorial warm water volume of the equatorial Pacific, together with wind variability in the western equatorial Pacific, can be explained by the fact that the process occurred in the Southern Ocean recently became a major contributor amplifying ENSO events. The reproduction in numerical models of ocean dynamics for the mechanism found can improve the accuracy of the forecast of El Niño events.
Keywords
ENSO, The Southern Ocean, Numerical Modelling
To cite this article
Vladimir Nikolaevich Stepanov, The Impact of the Processes in the Southern Ocean on ENSO Development, Earth Sciences. Vol. 8, No. 2, 2019, pp. 117-125. doi: 10.11648/j.earth.20190802.15
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Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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