Any physical description setting for the distribution of momentum, energy and matter within the turbulent boundary layer of the atmosphere is usually made according to models based on the assumption of horizontal homogeneity. However, the earth's surface not being homogeneous, the consequence of this approach is that these physical models cannot be transferred nor applied under non-homogeneous conditions. The conventional methods used for observing micro-meteorology data do not appear to be adequate in interpreting data observed on heterogeneous surfaces. In this connection, the method of acoustic travel-time tomography is here introduced. This method uses the variability of the speed of sound according to meteorological quantities such as wind and temperature in order to observe synchronous data of wind- and air-temperature fields under natural conditions in a given area. This allows to shun a main requirement of conventional micro-meteorological experiments - the horizontally homogeneous conditions.