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Comparison of Stratospheric Zonal Winds and El Niño–Southern Oscillation in Recent Decades

✍ Scribed by R. P. Kane

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
159 KB
Volume
24
Category
Article
ISSN
0899-8418

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✦ Synopsis

Abstract

A comparison of the plots of the monthly and yearly values indicates that stratospheric winds and El Niño–southern oscillation (ENSO) parameters evolve differently and probably have no relationship with each other. The sharp commencement of the 1997–98 El Niño in February–March 1997 was not accompanied by any particular deviation from the general trend of the wind variation in those months. Spectral analysis for 1979 up to the present indicates that winds have only a quasi‐biennial oscillation (QBO) near 2.40 years as a prominent variation, whereas ENSO has main periodicities near 3.7 and 5.0 years and a small QBO near 2.50 years, slightly but significantly different from the wind QBO. Copyright © 2004 Royal Meteorological Society

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