EFFECT of MACROCIRCULATION SYSTEMS on the THERMOBARIC CONDITIONS of the VOLGA FEDERAL DISTRICT

Abstract

The paper describes spatiotemporal variability of atmospheric pressure fields, air temperature and wind speed in the troposphere of the Northern Hemisphere over the period from 1948 to 2013. The southern oscillation in the subequatorial Pacific Ocean, and also the delay of the low-frequency temperature component with respect to the changes in zonal atmospheric circulation in a latitudinal zone between 30° N and 70° N are revealed as a response in the baric fields of extra-tropical latitudes on the El Ninõ phenomenon during the winter period. The contribution of wind speed to the temperature variations reaches 60%. The reaction of air temperature in the Volga Region to the influence of a number of circulating systems is considered as an example. © 2014 Kazan Federal University. All rights reserved.