Izvestiya, Atmospheric and Oceanic Physics

, Volume 54, Issue 6, pp 528–535 | Cite as

Dynamics of the Convective Rise of Thermals in the Atmosphere

  • L. F. ChernogorEmail author


Exact and approximate relations have been obtained to describe the evolution of the following parameters of heated air parcels during their convective uplifting in the atmosphere: the altitude and temporal dependences of the speed of the parcel center, the parcel characteristic size (radius), and the excess relative temperature. Cases of moderate and strong heating have been considered. The original equations include relations for the rate of uplifting thermals, the mass of entrained cool air, and the complete integral of thermal buoyancy. It has been shown that during uplifting the radius of the heated air parcel increases, the excess temperature decreases, and the uplift rate varies nonmonotonically: first, it increases from zero and reaches a maximum; then it gradually decreases to zero. Numerical estimates for characteristic situations have been performed.


altitude dependence temporal dependence rate of rising radius of a thermal (heated air parcel) excess relative temperature uplift height uplift time 



  1. 1.
    Yu. A. Gostintsev, E. A. Ivanov, S. N. Kulichkov, et al., “On the mechanism of infrasound wave generation in the atmosphere by large fires,” Dokl. Akad. Nauk 283 (3), 573–576 (1985).Google Scholar
  2. 2.
    L. F. Chernogor, “Physical processes in the near-Earth environment accompanying the military operations in Iraq (March–April 2003),” Kosm. Nauka Tekhnol. 9 (2–3), 13–33.CrossRefGoogle Scholar
  3. 3.
    L. F. Chernogor, “Geophysical effects and geoecological consequences of mass chemical explosions at military depots of Artemovsk,” Geofiz. Zh. 26 (4), 31–44 (2004).Google Scholar
  4. 4.
    L. F. Chernogor, " Geophysical effects and geoecological consequences of the fire and explosions at the Melitopol’ military base," Geofiz. Zh. 26 (6), 61–73 (2004).Google Scholar
  5. 5.
    L. F. Chernogor, “Ecological consequences of mass chemical explosions during a technogenic catastrophe,” Geoekol. Inzh. Geol. Gidrogeol. Geokriol. 6, 522–535 (2006).Google Scholar
  6. 6.
    L. F. Chernogor, “The Earth–atmosphere–ionosphere–magnetosphere as an open dynamical nonlinear physical system. 1, Nelineinyi Mir 4 (12), 655–697 (2006).Google Scholar
  7. 7.
    L. F. Chernogor, “The Earth–atmosphere–ionosphere–magnetosphere as an open dynamical nonlinear physical system. 2, Nelineinyi Mir 5 (4), 198–231 (2007).Google Scholar
  8. 8.
    S. A. Pulinets, D. P. Ouzounov, A. V. Karelin, and D. V. Davidenko, “Physical bases of the generation of short-term earthquake precursors: A complex model of ionization-induced geophysical processes in the lithosphere–atmosphere–ionosphere–magnetosphere system,” Geomagn. Aeron. (Engl. Transl.) 55 (4), 521–5538 (2015).Google Scholar
  9. 9.
    The 1980 Eruptions of Mount St. Helens (Washington, D.C., 1981).Google Scholar
  10. 10.
    L. F. Chernogor, “Atmospheric effects of the gas-dust plume of the Chelyabinsk meteoroid of 2013,” Izv., Atmos. Ocean. Phys. 53 (3), 259–268 (2017).CrossRefGoogle Scholar
  11. 11.
    S. Glasstone and P. J. Dolan, Effects of Nuclear Weapons (United States Department of Defense and Energy Research and Development Administration, Washington, D.C., 1977).Google Scholar
  12. 12.
    Yu. A. Gostintsev and Yu. V. Shatskikh, “On the mechanism of generation of longwave acoustic disturbances in the atmosphere by the emerging cloud of explosion products,” Fiz. Goreniya Vzryva, No. 2, 91–97 (1987).Google Scholar
  13. 13.
    B. R. Morton, G. Taylor, and J. S. Turner, “Turbulent gravitational convection from maintained and instantaneous sources,” Proc. R. Soc. London, Ser. A 234 (1196), 1–23 (1956).Google Scholar
  14. 14.
    E. Gossard and W. Hooke, Waves in the Atmosphere (Elsevier, Amsterdam, 1975; Mir, Moscow, 1978).Google Scholar
  15. 15.
    L. F. Chernogor, Physics and Ecology of Catastrophes (KhNU im. V. N. Karazina, Khar’kov, 2012) [in Russian].Google Scholar
  16. 16.
    Catastrophic Events Caused by Cosmic Objects, Ed. by V. V. Adushkin and I. V. Nemchinov (Akademkniga, Moscow, 2005) [in Russian].Google Scholar
  17. 17.
    N. N. Gorkavyi, T. A. Taidakova, and E. A. Provornikova, “Aerosol plume after the Chelyabinsk bolide,” Sol. Syst. Res. 47 (4), 275–279 (2013).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Kharazin National UniversityKharkovUkraine

Personalised recommendations