Study of the Characteristics of Internal Waves in the Kara Sea and Their Influence on Turbulent Heat and Momentum Fluxes over the Sea Surface

This paper is devoted to the study of the characteristics of internal waves in the Kara Sea and their interaction with the atmosphere, in particular, their influence on the turbulent momentum and heat fluxes in the surface layer of the atmosphere. The direction and horizontal velocity of propagation...

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Bibliographic Details
Published in:Izvestiya. Atmospheric and oceanic physics 2024-10, Vol.60 (5), p.501-514
Main Authors: Marchuk, E. A., Chunchuzov, I. P., Popov, O. E., Repina, I. A., Kozlov, I. E., Silvestrova, K. P., Osadchiev, A. A., Stepanova, N. B., Johannessen, O. M.
Format: Article
Language:English
Subjects:
Atmosphere
Atmospheric turbulence
Climatology
Earth and Environmental Science
Earth Sciences
Fluctuations
Geophysics/Geodesy
Heat
Heat flux
Heat transfer
Internal waves
Latent heat
Lower troposphere
Mesoscale phenomena
Meteorological parameters
Modes
Momentum
Parameters
Propagation modes
Propagation velocity
Sea surface
Strata
Surface boundary layer
Surface layers
Thermocline
Troposphere
Turbulent fluxes
Water temperature
Wave propagation
Waves
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Summary:This paper is devoted to the study of the characteristics of internal waves in the Kara Sea and their interaction with the atmosphere, in particular, their influence on the turbulent momentum and heat fluxes in the surface layer of the atmosphere. The direction and horizontal velocity of propagation of short-period internal waves in the Kara Gates Strait are calculated. Cross spectra of mesoscale fluctuations of water temperature at the sea surface, at depths of 10 and 20 m, and meteorological parameters at a height of 22 m are analyzed. Common spectral maxima at periods characteristic of the trapped internal gravity modes propagating in the thermocline layer and atmospheric gravity modes in the stably stratified layer of the lower troposphere are revealed. A possible mechanism of influence of the observed gravity modes in the thermocline layer on mesoscale fluctuations of meteorological parameters (with periods from 10 min to several hours) and turbulent fluxes of momentum and apparent and latent heat in the surface layer of the atmosphere is proposed.
ISSN:0001-4338
1555-628X
DOI:10.1134/S0001433824700464