In this paper an attempt has been made to parameterize the momentum flux and energy flux associated with internal gravity waves excited by the Assam-Burma hills in India in a baroclinic mean flow. For that a linear dynamical model for air flow across a three-dimensional meso-scale elliptical barrier has been used. In the present study ABH has been approximated by two 3-D elliptical barriers, separated by a valley of some finite distance and is broadly north–south (NS) oriented. For more simplicity, the basic flow has been assumed to have two components U and V, normal to the major ridges of the elliptical barriers and parallel to the major ridges of the elliptic barriers respectively and a rectangular co-ordinate system in which, x-axis points towards east, y-axis points towards north and z-axis vertically upwards are considered. Realistic vertical variation of the buoyancy frequency (N) and both components of basic flow U and V have been considered in this study. Here two cases have been discussed. In every cases, the energy flux (Ez) and the two horizontal components of the momentum flux τzx (westerly) and τzy (easterly) are computed at different levels and have been compared with the results obtained by earlier investigators.