Atmospheric measurements are essential to improve our understanding of atmospheric processes, and our ability to simulate and to predict the behaviour of the atmosphere. In particular, there is a strong need for observations suitable to validate numerical models and atmospheric parameters derived from satellite data. Frequently, pronounced land surface heterogeneity poses special challenges to experimental techniques at the local to regional scale in order to match scales between measurements and models.

This session is intended to give a forum to discuss recent developments and achievements in measurement concepts and technology with special emphasis on their representativity at scales of the order of 1 to 10 km. Focus will be put on measurements of variables characterising the energy and water cycle components, like temperature and humidity profiles (mean values and spatial / temporal statistics), heat and water storage in the soil, radiation and turbulent energy fluxes. Contributions are invited to report about current progress and results from measurements using networks of in-situ sensors, airborne measurement platforms, and ground-based remote sensing techniques, such as scintillometer, lidar, sodar, radar, RASS. Studies showing the synergy between these types of measurements and satellite data are also welcome.