A new system for high-frequency boundary layer profiling based upon radiosondes and free balloons was tested during the field phases of the Boundary Layer Late Afternoon and Sunset Turbulence experiment (BLLAST 2011. Lannemezan. France) and of the Hydrological cycle in the Mediterranean Experiment (HyMeX. 2012). https://www.isyeriacilisi.com/product-category/english-longbow/