Articles | Volume 32, issue 2
Ann. Geophys., 32, 181–186, 2014
Ann. Geophys., 32, 181–186, 2014

Regular paper 25 Feb 2014

Regular paper | 25 Feb 2014

Rolls of the internal gravity waves in the Earth's atmosphere

O. Onishchenko1,2, O. Pokhotelov1, W. Horton3, A. Smolyakov4, T. Kaladze5,6, and V. Fedun7 O. Onishchenko et al.
  • 1Institute of Physics of the Earth, 10 B. Gruzinskaya, 123995 Moscow, Russian Federation
  • 2Space Research Institute, 84/32, Profsoyuznaya str., 117997 Moscow, Russian Federation
  • 3Institute for Fusion Studies, University of Texas at Austin, Austin, Texas, USA
  • 4University of Saskatchewan, Saskatchewan, S7N 5E2, Canada
  • 5I. Vekua Institute of Applied Mathematics, Tbilisi State University, Tbilisi, Georgia
  • 6Physics Department, Government College University, Lahore 54000, Pakistan
  • 7Space Systems Laboratory, Department of Automatic Control and Systems Engineering, University of Sheffield, Sheffield, S1 3JD, UK

Abstract. The effect of the wind shear on the roll structures of nonlinear internal gravity waves (IGWs) in the Earth's atmosphere with the finite vertical temperature gradients is investigated. A closed system of equations is derived for the nonlinear dynamics of the IGWs in the presence of temperature gradients and sheared wind. The solution in the form of rolls has been obtained. The new condition for the existence of such structures was found by taking into account the roll spatial scale, the horizontal speed and wind shear parameters. We have shown that the roll structures can exist in a dynamically unstable atmosphere.