METHOD FOR CALCULATING TORSIONAL OSCILLATIONS IN EARTH’S ATMOSPHERE FROM NCEP/NCAR, MERRA-2, ECMWF ERA-40, AND ERA-INTERIM
Journal Title: Solar-Terrestrial Physics - Year 2019, Vol 5, Issue 1
Abstract
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.
Authors and Affiliations
Zorkaltseva O. S. , Mordvinov V. I. , Devyatova E. V. , Dombrovskaya N. S.
Keywords
Related Articles
- EP ID EP700257
- DOI 10.12737/stp-51201910
- Views 116
- Downloads 0
OPTICAL OBSERVATIONS OF SMALL SPACECRAFT AND SPACE DEBRIS AT ISTP SB RAS SAYAN OBSERVATORY
Launch of several thousands of small spacecraft as part of satellite groups of various companies (OneWeb, SpaceX, etc.) is expected in the coming years. They will significantly increase the “population” in the low-orbit...
GALACTIC COSMIC RAY ANISOTROPY MODELLING
We calculate the angular distribution of cosmic rays at a given point of the heliosphere under the assumption that the incoming flux from outer space is isotropic. The static magnetic field is shown to cause no anisotrop...
INTERACTIVE COMPUTER MODEL FOR AURORA FORECAST AND ANALYSIS
An interactive computer model of a short-term (with a horizon 30–70 min) forecast of aurora intensity has been developed in the form of a web-based geoinformation system. The OVATION-Prime empirical model is used as the...
STUDYING THE DYNAMICS OF ELECTRIC CURRENTS AND POLAR CAPS IN IONOSPHERES OF TWO HEMISPHERES DURING THE AUGUST 17, 2001 GEOMAGNETIC STORM
The magnetogram inversion technique (MIT), developed at ISTP SB RAS more than forty years ago, has been used until recently only in the Northern Hemisphere. In recent years, MIT has been improved and extended to make ins...
OBSERVING THE NEUTRON COMPONENT DURING THUNDERSTORM ACTIVITY AT A MOUNTAIN CR STATION
During three summer months in 2015, the Cosmic Ray (CR) station Irkutsk-3000, located at 3000 m above sea level, measured the CR neutron component intensity with the 6NM64 neutron monitor, as well as the atmospheric elec...