Observed connection between stratospheric sudden warmings and the Madden-Julian Oscillation

Chaim I. Garfinkel; Steven B. Feldstein; Darryn W. Waugh; Changhyun Yoo; Sukyoung Lee

doi:10.1029/2012GL053144

Observed connection between stratospheric sudden warmings and the Madden-Julian Oscillation

Chaim I. Garfinkel^*, Steven B. Feldstein, Darryn W. Waugh, Changhyun Yoo, Sukyoung Lee

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

142 Scopus citations

Abstract

The effect of the Madden-Julian Oscillation (MJO) on the Northern Hemisphere wintertime stratospheric polar vortex and major, mid-winter stratospheric sudden warmings (SSWs) is evaluated using a meteorological reanalysis dataset. The MJO influences the region in the tropospheric North Pacific sector that is most strongly associated with a SSW. Consistent with this, SSWs in the reanalysis record have tended to follow certain MJO phases. The magnitude of the influence of the MJO on the vortex is comparable to that associated with the Quasi-Biennial Oscillation and El Niño. The MJO could be used to improve intra-seasonal projections of the Northern Hemisphere high latitude circulation, and in particular of the tropospheric Northern Annular Mode, at lags exceeding one month.

Original language	English
Article number	L18807
Journal	Geophysical Research Letters
Volume	39
Issue number	17
DOIs	https://doi.org/10.1029/2012GL053144
State	Published - 1 Sep 2012
Externally published	Yes

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title = "Observed connection between stratospheric sudden warmings and the Madden-Julian Oscillation",

abstract = "The effect of the Madden-Julian Oscillation (MJO) on the Northern Hemisphere wintertime stratospheric polar vortex and major, mid-winter stratospheric sudden warmings (SSWs) is evaluated using a meteorological reanalysis dataset. The MJO influences the region in the tropospheric North Pacific sector that is most strongly associated with a SSW. Consistent with this, SSWs in the reanalysis record have tended to follow certain MJO phases. The magnitude of the influence of the MJO on the vortex is comparable to that associated with the Quasi-Biennial Oscillation and El Ni{\~n}o. The MJO could be used to improve intra-seasonal projections of the Northern Hemisphere high latitude circulation, and in particular of the tropospheric Northern Annular Mode, at lags exceeding one month.",

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T1 - Observed connection between stratospheric sudden warmings and the Madden-Julian Oscillation

AU - Garfinkel, Chaim I.

AU - Feldstein, Steven B.

AU - Waugh, Darryn W.

AU - Yoo, Changhyun

AU - Lee, Sukyoung

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Y1 - 2012/9/1

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AB - The effect of the Madden-Julian Oscillation (MJO) on the Northern Hemisphere wintertime stratospheric polar vortex and major, mid-winter stratospheric sudden warmings (SSWs) is evaluated using a meteorological reanalysis dataset. The MJO influences the region in the tropospheric North Pacific sector that is most strongly associated with a SSW. Consistent with this, SSWs in the reanalysis record have tended to follow certain MJO phases. The magnitude of the influence of the MJO on the vortex is comparable to that associated with the Quasi-Biennial Oscillation and El Niño. The MJO could be used to improve intra-seasonal projections of the Northern Hemisphere high latitude circulation, and in particular of the tropospheric Northern Annular Mode, at lags exceeding one month.

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Observed connection between stratospheric sudden warmings and the Madden-Julian Oscillation

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