Atmospheric dynamics are of relevance in both global and local scales. Meteorological measurements are crucial for many practical purposes, such as global warming assessment, ocean-atmosphere and land-atmosphere interaction, wind energy, etc. Having good quality measurements allows for numerical models validation, which in turn permit global and meso-scale analysis, as well as weather forecast with industrial, navigation and even recreational purposes. Moreover, these models are used for pollution dispersal monitoring. From smaller scales viewpoint, it is important to understand how the atmosphere interacts with complex terrain, generating turbulence and perturbations, which have important effects on the energy balance of all ecosystems.