Internal Gravity and Infrasound Waves during the Hurricane of May 29, 2017, in Moscow

S. N. Kulichkov; I. P. Chunchuzov; O. E. Popov; V. G. Perepelkin; E. V. Golikova; G. A. Bush; I. A. Repina; N. D. Tsybulskaya; G. I. Gorchakov

doi:10.1134/S0001433819020105

Internal Gravity and Infrasound Waves during the Hurricane of May 29, 2017, in Moscow

Authors: Kulichkov S.N.¹, Chunchuzov I.P.¹, Popov O.E.¹, Perepelkin V.G.¹, Golikova E.V.¹, Bush G.A.¹, Repina I.A.¹, Tsybulskaya N.D.¹, Gorchakov G.I.¹
Affiliations:
1. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences
Issue: Vol 55, No 2 (2019)
Pages: 167-177
Section: Article
URL: https://journals.rcsi.science/0001-4338/article/view/148703
DOI: https://doi.org/10.1134/S0001433819020105
ID: 148703

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Abstract

Data on internal gravity and infrasound waves recorded during the passage of both warm and cold fronts throughout Moscow, which are associated with the atmospheric storm of May 29, 2017, are given. These waves were recorded by four microbarographs located in the city of Moscow and Moscow region (and marked IFA, MGU, MSR, and ZNS in Fig. 1) and the data obtained were compared with data on infrasound waves recorded at the IS43 station in the town of Dubna. Time variations in the characteristics of internal gravity and infrasound waves (coherence, propagation azimuths, phase velocities, characteristic periods, and frequency spectra) during the passage of both warm and cold fronts are studied. The transition from the gravity to acoustic dispersive branch of acoustic-gravity waves due to increasing frequency and the temporal modulation of the phase velocity of infrasound waves due to internal gravity waves (IGWs) are also studied. Data on both aerosol (PM₁₀) and gas (NO₂) concentrations measured at different Moscow stations during the approaching atmospheric storm are given. The possibility of detecting wave precursors of atmospheric storms in simultaneous variations in atmospheric pressure, wind velocity, and pollutant concentrations is studied.

Keywords

internal gravity waves, infrasound waves, atmospheric storm, coherence, warm front, cold front, phase velocity, wave precursor

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Internal Gravity and Infrasound Waves during the Hurricane of May 29, 2017, in Moscow

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About the authors

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