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One Plausible Reason for the Change in Enso Characteristics in the 2000S : Volume 10, Issue 4 (01/07/2013)

By Stepanov, V. N.

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Book Id: WPLBN0004020767
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: One Plausible Reason for the Change in Enso Characteristics in the 2000S : Volume 10, Issue 4 (01/07/2013)  
Author: Stepanov, V. N.
Volume: Vol. 10, Issue 4
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Stepanov, V. N. (2013). One Plausible Reason for the Change in Enso Characteristics in the 2000S : Volume 10, Issue 4 (01/07/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Dept. of Meteorology, University of Reading, Reading, UK. It is well known that El Niño Southern Oscillation (ENSO) causes floods, droughts and the collapse of fisheries, therefore forecasting of ENSO is an important task in climate researches. Variations in the equatorial warm water volume of the tropical Pacific and wind variability in the western equatorial Pacific has been considered to be a good ENSO predictor. However, in the 2000s, the interrelationship between these two characteristics and ENSO onsets became weak. This article attempts to find some plausible explanation for this.

The results presented here demonstrate a possible link between the variability of atmospheric conditions over the Southern Ocean and their impact on the ocean circulation leading to the amplifying/triggering of ENSO events. It is shown that the variability of the atmospheric conditions upstream of Drake Passage can strongly influence ENSO events. 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 has recently weakened. It can be explained by the fact that the process occurred in the Southern Ocean recently became a major contributor amplifying ENSO events (in comparison with the processes of interaction between the atmosphere and the ocean in the tropics of the Pacific). Likely it is due to a warmer ocean state observed from the end of the 1990s that led to smaller atmospheric variability in the tropics and insignificant their changes in the Southern Ocean.


Summary
One plausible reason for the change in ENSO characteristics in the 2000s

Excerpt
Alexander, M. A., Matrosova, L., Penland, C., Scott, J. D., and Chang, P.: Forecasting Pacific SSTs: linear inverse model predictions of the PDO, J. Climate, 21, 385–402, doi:10.1175/2007JCLI1849.1, 2008.; Alvarez-Garcia, F., Narvaez, W. C., and Ortiz Bevia, M. J.: An assessment of differences in ENSO mechanisms in a coupled GCM simulation, J. Climate, 19, 69–87, 2006.; Ashok, K., Behera, S. K., Rao, S. A., Weng, H., and Yamagata, T.: El Niño Modoki and its possible teleconnection, J. Geophys. Res., 112, C11007, doi:10.1029/2006JC003798, 2007.; Blaker, A. T., Sinha, B., Ivchenko, V. O., Wells, N. C., and Zalesny, V. B.: Identifying the roles of the ocean and atmosphere in creating a rapid equatorial response to a Southern Ocean anomaly, Geophys. Res. Lett., 33, L06720, doi:10.1029/2005GL025474, 2006.; Bretherton, C. S., Widmann, M., Dymnikov, V. P., Wallace, J. M., and Bladé, I.: The effective number of spatial degrees of freedom of a time-varying field, J. Climate, 12, 1990–2009, 1999.; Chang, P., Zhang, L., Saravanan, R., Vimont, D. J., Chiang, J. C. H., Ji, L., Seidel, H., and Tippett, M. K.: Pacific meridional mode and El Niño–Southern Oscillation, Geophys. Res. Lett., 34, L16608, doi:10.1029/2007GL030302, 2007.; Clarke, A. J. and Van Gorder, S.: Improving El Niño prediction using a space-time integration of Indo-Pacific winds and equatorial Pacific upper ocean heat content, Geophys. Res. Lett., 30, 1399, doi:10.1029/2002GL016673, 2003.; Delcroix, T., Picaut, J., and Eldin, G.: Equatorial Kelvin and Rossby waves evidenced in the Pacific Ocean through geosat sea level and surface current anomalies, J. Geophys. Res., 96, 3249–3262, doi:10.1029/90JC01758, 1991.; Dong, B., Sutton, R. T., and Scaife, A. A.: Multidecadal modulation of El Niño-Southern Oscillation (ENSO) variance by Atlantic Ocean sea surface temperatures, Geophys. Res. Lett., 33, L08705, doi:10.1029/2006GL025766, 2006.; Eisenman, I., Yu, L., and Tziperman, E.: Westerly wind bursts: ENSO's tail rather than the dog?, J. Climate, 18, 5224–5238, 2005.; Flügel, M., Chang, P., and Penland, C.: The role of stochastic forcing in modulating ENSO predictability, J. Climate, 17, 3125–3140, 2004.; Gill, A. E.: Atmosphere–Ocean Dynamics, Academic Press, London, 662 pp., 1982.; Horii, T., Ueki, I., and Hanawa, K.: Breakdown of ENSO predictors in the 2000s: decadal changes of recharge/discharge-SST phase relation and atmospheric intraseasonal forcing, Geophys. Res. Lett., 39, L10707, doi:10.1029/2012GL051740, 2012.; Ibraev, R. A.: Reconstruction of climatic characteristics of the Gulf stream current, Izv. AN Fiz. Atmos. Ok., 29, 803–814, 1993.; Ivchenko, V. O., Zalesny, V. B., and Drinkwater, M. R.: Can the equatorial ocean quickly respond to Antarctica sea ice/salinity anomalies?, Geophys. Res. Lett., 31, L15310, doi:10.1029/2004GL020472, 2004.; Ivchenko, V. O., Zalesny, V. B., Drinkwater, M. R., and Schröter, J.: A quick response of the equatorial ocean to Antarctic sea ice/salinity anomalies, J. Geophys. Res., 111, C10018, doi:10.1029/2005JC003061, 2006.; Jin, F.-F.: An equatorial recharge paradigm for ENS O. Part I: Conceptual model, J. Atmos. Sci., 54, 811–829, 1997.; Kao, H.-Y. and Yu, J.-Y.: Contrasting eastern-Pacific and central-Pacific types of ENSO, J. Climate, 22, 615–632, 2009.; Kessler, W. S.: Is ENSO a Cycle or Series of Events?, Geophys. Re

 

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