Results 151 to 160 of about 713 (180)

The Dynamics of Sudden Stratospheric Warmings

Annual Review of Earth and Planetary Sciences, 1980
The normal global-scale circulation of the stratosphere is dominated by a zonally (longitudinally) symmetric mean flow that is westerly (from the west) in the winter hemisphere and easterly (from the east) in the summer hemisphere. Superposed on this zonal mean flow are longitudinally varying wave perturbations referred to as planetary waves.
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The Study of Sudden Stratospheric Warmings Using Infrasound

The Journal of the Acoustical Society of America, 2017
Infrasound has a long history in monitoring SSWs. Several pioneering studies have focused on the various effects of a major warming on the propagation of infrasound, described throughout this chapter. A clear transition can be denoted from observing anomalous signatures towards the use of these signals to study anomalies in upper atmospheric ...
Pieter Smets, Jelle Assink, Läslo Evers
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Numerical Simulation of Sudden Stratospheric Warmings

Journal of the Atmospheric Sciences, 1980
Abstract A mechanistic, quasi-geostrophic, semi-spectral model with a self-consistent calculation of the mean zonal flow fields is used to numerically simulate sudden stratospheric warmings generated by a single zonal harmonic (m) planetary wave.
Mark R. Schoeberl, Darrell F. Strobel
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A Dynamical Model of the Stratospheric Sudden Warming

Journal of the Atmospheric Sciences, 1971
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 are generated in the troposphere, they propagate upward into the stratosphere, where the waves act to decelerate the polar night jet through the induction ...
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On future changes in stratospheric sudden warmings

2013
Traditionally, stratospheric sudden warming events (SSWs) are defined using a fixed threshold criterion. This criterion, however, may lead to spurious results if the climate of the underlying dataset is changing. In an attempt to overcome this potential shortcoming we develop alternative criteria to define such events and test these criteria using ...
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On the Different Quasi-2-Day Wave Behaviors during Sudden Stratospheric Warming Periods

Atmosphere, 2023
Chen-Ke-Min Teng, Sheng-Yang Gu, Liang Tang   +2 more
exaly  

Planetary Wave Spectrum in the Stratosphere–Mesosphere during Sudden Stratospheric Warming 2018

Remote Sensing, 2021
Valery Shulga, Gennadi Milinevsky, Asen Grytsai   +2 more
exaly  

Dynamic coupling of the stratosphere with the troposphere and sudden stratospheric warmings.

1972
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1972. ; Vita. ; Bibliography: leaves 211-220. ; Sc.D.
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Reponses of middle atmospheric circulation to the 2009 major sudden stratospheric warming

Earth and Planetary Physics, 2020
Xiangkang Dou, Sheng-Yang Gu
exaly  

Comparison of Major Sudden Stratospheric Warming Impacts on the Mid-Latitude Mesosphere Based on Local Microwave Radiometer CO Observations in 2018 and 2019

Remote Sensing, 2020
Valery Shulga, Gennadi Milinevsky, Wei Han   +2 more
exaly