Development of Kytoon Stationfor Meteorological and Air PollutionMeasurements in a MediterraneanUrban Climate

This Thesis illustrates the development of a meteoric-climatic kytoon ( Kyte-Balloon ) system for measurements of vertical profile of pressure, wind velocity and its fluctuations, temperature, humidity and concentration of pollutants. After brief overview of past experiments using kytoons, the proposed selection of a balloon and main tether line configuration is discussed, taking into account stability of system and mission requirements: average wind speed at ground (5m/s), maximum altitude of 500m, compatibility with flight in urban site. Finally the assembled solution of all instruments (sonic anemometer, Attitude and Heading Reference System ( AHRS ), Differential Global Positioning System ( DGPS ), pollutants’ film solid sensors and integrated thermo-hygrometer probe, acquisition system, led based light for nocturnal flight and power subsystem ) in a nacelle under balloon is presented. High attention were focused in avoiding reciprocal measurement interferences, particularly the influence of balloon on wind measurement. CFD simulations around balloons were performed to enforce last consideration.