The association between stratospheric weak polar vortex events and cold air outbreaks in the Northern Hemisphere

@article{Kolstad2010TheAB,
  title={The association between stratospheric weak polar vortex events and cold air outbreaks in the Northern Hemisphere},
  author={Erik W. Kolstad and Tarjei Breiteig and Adam A. Scaife},
  journal={Quarterly Journal of the Royal Meteorological Society},
  year={2010},
  volume={136}
}
Previous studies have identified an association between temperature anomalies in the Northern Hemisphere and the strength of stratospheric polar westerlies. Large regions in northern Asia, Europe and North America have been found to cool during the mature and late stages of weak vortex events in the stratosphere. A substantial part of the temperature changes are associated with changes in the Northern Annular Mode (NAM) and North Atlantic Oscillation (NAO) pressure patterns in the troposphere… 

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References

SHOWING 1-10 OF 56 REFERENCES

Stratospheric Connection to Northern Hemisphere Wintertime Weather: Implications for Prediction

The dynamical coupling between the stratospheric and tropospheric circulations yields a statistically significant level of potential predictability for extreme cold events throughout much of the

Tropospheric Precursors of Anomalous Northern Hemisphere Stratospheric Polar Vortices

Regional extratropical tropospheric variability in the North Pacific and eastern Europe is well correlated with variability in the Northern Hemisphere wintertime stratospheric polar vortex in both

Extreme cold air outbreaks over the United States, the polar vortex, and the large‐scale circulation

[1] Extreme cold air outbreaks (CAOs) affect a large region of the midlatitudes during the winter months. An objective criterion was developed for identifying and ranking the 30 most extreme CAOs

Stratosphere-troposphere coupling and links with eurasian land surface variability

A diagnostic of Northern Hemisphere winter extratropical stratosphere–troposphere interactions is presented to facilitate the study of stratosphere–troposphere coupling and to examine what might

The Life Cycle of the Northern Hemisphere Sudden Stratospheric Warmings

Motivated by recent evidence of strong stratospheric‐tropospheric coupling during the Northern Hemisphere winter, this study examines the evolution of the atmospheric flow and wave fluxes at levels

A Dynamical Model of the Stratospheric Sudden Warming

Abstract The dynamics of the stratosphere sudden warming phenomenon is discussed in terms of the interaction of vertically propagating planetary waves with zonal winds. If global-scale disturbances

Relationship between stationary planetary wave activity and the East Asian winter monsoon

[1] The variability of both the stationary planetary wave activity and the East Asian winter monsoon is strongly associated with the thermal contrast between oceans and landmasses. In this study, we

Upward Wave Activity Flux as a Precursor to Extreme Stratospheric Events and Subsequent Anomalous Surface Weather Regimes

Abstract It has recently been shown that extreme stratospheric events (ESEs) are followed by surface weather anomalies (for up to 60 days), suggesting that stratospheric variability might be used to

Role of planetary waves in the stratosphere‐troposphere coupled variability in the northern hemisphere winter

The role of planetary waves in stratosphere‐troposphere coupled variability is investigated using an extended singular value decomposition analysis of zonal‐mean zonal wind and the vertical component

A New Look at Stratospheric Sudden Warmings. Part III: Polar Vortex Evolution and Vertical Structure

The evolution of the Arctic polar vortex during observed major midwinter stratospheric sudden warmings (SSWs) is investigated for the period 1957‐2002, using 40-yr European Centre for Medium-Range
...