How Many Convective Zones Are There in the Atmosphere of Venus?

V. I. Moroz1, A. V. Rodin1
1Space Research Institute, Russian Academy of Sciences, Moscow, Russia

Tóm tắt

The qualitative characteristics of the vertical structure of the atmospheres of Venus and the Earth essentially differ. For instance, there are at least two, instead of one, zones with normal (thermal) convection on Venus. The first one is near the surface (a boundary layer); the second is at the altitudes of the lower part of the main cloud layer between 49 and 55 km. Contrary to the hypotheses proposed by Izakov (2001, 2002), the upper convective zone prevents energy transfer from the upper clouds to the subcloud atmosphere by “anomalous turbulent heat conductivity.” It is possible, however, that the anomalous turbulent heat conductivity takes part in the redistribution of the heat fluxes within the lower (subcloud) atmosphere.

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Tài liệu tham khảo

Hinson, D.P. and Jenkins, J.M., Magellan Radio Occultation Measurements of Atmospheric Waves on Venus, Icarus, 1995, vol. 114, pp. 310-327.

Ingersoll, A.P., Crisp, D., Grossman, A.W., and VEGA Bal-loon Science Team, Estimates of Convective Heat Fluxes and Gravity Wave Amplitudes in the Venus Middle Cloud Layer from VEGA Balloon Measurements, Adv. Space Res., 1987, vol. 7, no. 11, pp. 343-349.

Izakov, M.N., Turbulence and Anomalous Heat Fluxes in the Atmospheres of Mars and Venus, Planet. Space Sci., 2001, vol. 49, pp. 47-58.

Izakov, M.N., Turbulent Heat Fluxes in the Atmosphere of Venus, Astron. Vestn., 2002, vol. 36, no. 3, pp. 213-225 [Sol. Syst. Res. (Engl. transl.), 2002, vol. 36, no. 3, pp. 193-205].

Linkin, V.M., Blamont, J., Devyatkin, S.I., et al., Thermal Structure of the Venus Atmosphere: Results of Measurements by the Vega-2 Lander, Kosm. Issled., 1987, vol. 25, no. 5, pp. 659-672.

Moroz, V.I., The Atmosphere of Venus, Space Sci. Rev., 1981, vol. 29, pp. 3-127.

Ragent, B., Esposito, L., Tomasko, M.G., et al., Particulate Matter in the Venus Atmosphere, Adv. Space Sci., 1985, vol. 5, no. 11, pp. 85-116.

Seiff, A., Kirk, D.B., Young, R.E., e al., Measurements of Thermal Structure and Thermal Contrasts in the Atmosphere of Venus, J. Geophys. Res., 1980, vol. 85, pp. 7903-7933.

Seiff, A., Scofield, J.T., Kliore, A.J., et al., Models of the Structure of the Atmosphere of Venus from the Surface to 100 km Altitude, Adv. Space Res., 1985, vol. 5, no. 11, pp. 3-58.