Open AccessVertical propagation acoustic-gravity waves from atmospheric fronts into the upper atmosphere
Author(s) -
Yuliya Kurdyaeva,
S. N. Kulichkov,
С. П. Кшевецкий,
О. П. Борчевкина,
Е. В. Голикова
Publication year - 2019
Publication title -
izvestiâ akademii nauk sssr. fizika atmosfery i okeana
Language(s) - English
Resource type - Journals
ISSN - 0002-3515
DOI - 10.31857/s0002-35155543-12
Subject(s) - atmosphere (unit) , troposphere , atmospheric wave , amplitude , atmospheric pressure , atmospheric model , front (military) , cold front , atmospheric sciences , gravity wave , atmospheric temperature , geology , planetary boundary layer , mechanics , geophysics , wave propagation , physics , meteorology , boundary layer , optics
Using experimental observations of atmospheric pressure variations on the Earth’s surface recorded with a network of 4 microbarographs located in the Moscow region during the passage of an atmospheric front, empirical approximations of oscillations of atmospheric pressure field were constructed. The obtained approximating functions were used as the lower boundary condition for the numerical simulation of acoustic-gravity wave propagation to the upper atmosphere from the source in the lower troposphere. Estimates of the amplitude of temperature disturbances in the upper atmosphere caused by iacoustic gravity waves from the atmospheric front are given. The obtained estimates for the temperature disturbance amplitude take values around 170 K. The amplitude of temperature disturbances in the upper atmosphere, caused by background variations of pressure on the Earth's surface, is estimated at 4-5 K.