| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8139849 | Journal of Atmospheric and Solar-Terrestrial Physics | 2018 | 6 Pages |
Abstract
In the present communication, a record breaking duration (23 months) of the eastward phase of the QBO at 20Â hPa is reported and details of the tropical wave activity during the recent anomalous QBO event are discussed. Two-dimensional Fourier analysis revealed the presence of 30-40 and 10-15 day westward propagating wave number 1 structures at 40Â hPa pressure level over the equator. A combination of the mid-latitude Rossby waves and the 30-40 day oscillations seems to be the most probable mechanism for the observed disruption of the QBO.
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Authors
Karanam Kishore Kumar, Sneha Susan Mathew, K.V. Subrahmanyam,