Nino-Southern Oscillation drives North Atlantic Oscillation as revealed with nonlinear techniques from climatic indices

[1] Based on the nonlinear techniques for estimation of coupling between oscillatory systems, we investigate the dynamics of climatic modes characterizing global and the Northern Hemisphere (NH) processes. In particular, indices of the North Atlantic Oscillation (NAO) and El Niño–Southern Oscillatio...

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Bibliographic Details
Main Authors: I. I. Mokhov, D. A. Smirnov
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
climatic indices
Geophys. Res. Lett
33
L03708
doi
10.1029
North Atlantic
North Atlantic oscillation
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.332.7957
http://www.nonlinmod.sgu.ru/doc/doc2006_10.pdf
Description
Summary:[1] Based on the nonlinear techniques for estimation of coupling between oscillatory systems, we investigate the dynamics of climatic modes characterizing global and the Northern Hemisphere (NH) processes. In particular, indices of the North Atlantic Oscillation (NAO) and El Niño–Southern Oscillation (ENSO) for 1950–2004 are analyzed. The methods based on phase dynamics modeling and nonlinear ‘‘Granger causality’ ’ are used. We infer that ENSO affects NAO during the last half a century with confidence probability higher than 0.95. The influence is characterized with time delay in the range from a couple of months up to three years and increases during the last decade. Citation: Mokhov, I. I., and D. A.

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