Open AccessNonlinear interactions of stationary planetary waves during February 2016 sudden stratospheric warming
Author(s) -
Ksenia A. Didenko,
Alexander Pogoreltsev,
Tatiana S. Ermakova,
G. M. Shved
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/386/1/012016
Subject(s) - stratosphere , sudden stratospheric warming , potential vorticity , zonal flow (plasma) , enstrophy , atmospheric sciences , nonlinear system , climatology , diabatic , physics , meteorology , environmental science , middle latitudes , vorticity , polar vortex , geology , adiabatic process , vortex , plasma , quantum mechanics , tokamak , thermodynamics
An analysis of nonlinear wave-wave and wave-mean flow interactions has been carried out during a sudden stratospheric warming (SSW) event in February 2016. This approach is based on a study of the perturbed potential enstrophy (Ertel’s potential vorticity squared) balance equation. The results obtained by using UK Met Office reanalysis data are presented. It has been shown that an increase in the nonlinear interactions occurs at higher-middle latitudes of the boreal stratosphere during the SSW. It is noted that it is necessary to include the stationary planetary wave with zonal wave number m=3 in the analysis of major warmings.