TY - GEN

T1 - Interactions of planetary and orographic gravity waves during stratospheric warming in the middle atmosphere.

AU - Koval, Andrey

AU - Gavrilov, Nikolay

AU - Pogoreltsev, Alexander

AU - Savenkova, Elena

PY - 2014

Y1 - 2014

N2 - Sudden stratospheric warming (SSW) events are the most prominent processes, during which the troposphere and stratosphere demonstrate the dynamical coupling. We investigate interactions between stationary orographic gravity waves (OGWs) and planetary waves during winter and spring months in the Northern Hemisphere, when SSWs frequently occur. A parameterization of dynamical and thermal effects of OGWs generated by the Earth’s surface topography has been developed. This parameterization was included into the numerical model of general circulation of the middle and upper atmosphere (MUAM). Influence of OGWs on the mean flow and planetary waves in the troposphere and stratosphere during the SSW is analyzed.

AB - Sudden stratospheric warming (SSW) events are the most prominent processes, during which the troposphere and stratosphere demonstrate the dynamical coupling. We investigate interactions between stationary orographic gravity waves (OGWs) and planetary waves during winter and spring months in the Northern Hemisphere, when SSWs frequently occur. A parameterization of dynamical and thermal effects of OGWs generated by the Earth’s surface topography has been developed. This parameterization was included into the numerical model of general circulation of the middle and upper atmosphere (MUAM). Influence of OGWs on the mean flow and planetary waves in the troposphere and stratosphere during the SSW is analyzed.

M3 - Other contribution

ER -