TY JOUR TI Method for calculating torsional oscillations in Earth’s atmosphere from NCEP/NCAR, MERRA-2, ECMWF ERA-40, and ERA-Interim KW general atmospheric circulation KW torsional oscillations KW troposphere KW stratosphere KW sudden stratospheric warming JO Solnechno-Zemnaya Fizika AU Zorkaltseva, O.S. AU Mordvinov, V.I. AU Devyatova, E.V. AU Dombrovskaya, N.S. PY 2019 IS 5 PB INFRA-M Academic Publishing LLC.