Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 28057 10.12737/stp-51201910 Results of current research Results of current research Results of current research Method for calculating torsional oscillations in Earth’s atmosphere from NCEP/NCAR, MERRA-2, ECMWF ERA-40, and ERA-Interim Method for calculating torsional oscillations in Earth’s atmosphere from NCEP/NCAR, MERRA-2, ECMWF ERA-40, and ERA-Interim Зоркальцева Ольга Сергеевна Zorkaltseva Olga Sergeevna olgak@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Мордвинов Владимир Иванович Mordvinov Vladimir Ivanovich v_mordv@mail.iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Девятова Елена Викторовна Devyatova Elena Viktorovna devyatova@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Домбровская Наталья Сергеевна Dombrovskaya Natalya Sergeevna ndombrovskaya@inbox.ru Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Институт солнечно-земной физики СО РАН Иркутск Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation 5 1 69 76 https://naukaru.ru/en/nauka/article/28057/view

In this paper, we describe a method for calculating low-frequency zonal-mean zonal wind variations, which we call torsional oscillations. We compare the torsional oscillations calculated from the NCEP/NCAR reanalysis I, MERRA-2, ECWMF ERA-40, and ERA-Interim projects, using different methods of processing the original data. We estimate the degree of consistency of torsional oscillations, obtained from different reanalysis projects, and discuss the use of torsional oscillations to study circulation processes in the atmosphere.

In this paper, we describe a method for calculating low-frequency zonal-mean zonal wind variations, which we call torsional oscillations. We compare the torsional oscillations calculated from the NCEP/NCAR reanalysis I, MERRA-2, ECWMF ERA-40, and ERA-Interim projects, using different methods of processing the original data. We estimate the degree of consistency of torsional oscillations, obtained from different reanalysis projects, and discuss the use of torsional oscillations to study circulation processes in the atmosphere.

 general atmospheric circulation torsional oscillations troposphere stratosphere sudden stratospheric warming general atmospheric circulation torsional oscillations troposphere stratosphere sudden stratospheric warming

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