“…In this paper, we consider the parametric coupling between the modified Rao dust magnetoacoustic perturbations [ Rao , 1993, 1995] with a large amplitude HF radio/radar wave of ordinary polarization in the partially ionized dusty plasma of the Earth's ionosphere and mesosphere, taking into account the combined effects of the radio/radar wave ponderomotive force [ Karpman , 1975] and the differential electron Joule heating [e.g.,. Gurevich , 1978; Stenflo , 1985a, 1985b, 1990; Pécseli et al , 1986; Cole and Hoegy , 1996; Milikh and Dimant , 2002; Kuo , 2002] caused by radio/radar waves on the elliptically polarized modified dust magnetoacoustic waves. We derive a set of equations which exhibits the nonlinear coupling between the HF radio/radar wave vector potential and the driven density and electron temperature fluctuations that are associated with the modified magnetoacoustic perturbations.…”