On the estimation of eddy diffusion coefficient in the mesosphere from partial reflection technique

Estimations of the eddy diffusion coefficient in the mesosphere are reported using observations from the Partial Reflection Technique at Buckland Park, South Australia (35°S, 139°E). The method of estimation is approximately the same as reported by Schlegel et al. (1977) with one difference i.e. in the present work the medium is considered to be moving and the effect due to horizontal winds have been incorporated. It is found that the inclusion of horizontal winds decreases the value of the eddy diffusion coefficient and the decrease is more marked as the horizontal velocity increases.