The study of the mesosphere and lower thermosphere (MLT) dynamics presents great challenges. One of them is trying to find a dominant theory that explains mesoscales variations. Recently, Vierinen et al. (2019) introduced the Wind field Correlation Function Inversion (WCFI) technique that estimates spatial correlation functions (among other products) of the wind velocity field in the MLT from multistatic specular meteor radar observations. The correlations can be determined for lags in two dimensions (East-West and North-South directions), from which the frequently used hypothesis of horizontal isotropy on correlation functions of the fluctuating wind can be examined. Moreover, using the two dimensional correlation functions of the fluctuating wind, we investigate the two-point correlations of vertical vorticity (Qzz) and horizontal divergence (P) (Lindborg, 2007). Assuming that the velocity field is statistically homogeneous in horizontal planes of certain thickness, these functions can be expanded to get similar, compact forms. Qzz and P are of great significance since they can provide information on the relative importance of stratified turbulence and internal gravity waves to explain the mesoscale dynamics in the middle atmosphere.