Influence of Solar Radiation on the Diurnal and Seasonal Variability of O 3 and H 2 O in the Stratosphere and Lower Mesosphere, Based on Continuous Observations in the Tropics and the High Arctic

During the CAWSES DFG (German Research Association) priority program measurements of stratospheric and mesospheric O3 using ground based millimeterwave radiometry have been established and analyzed. Instruments have been operated at two different locations, at Merida, Venezuela, a high altitude tropic station and at Ny Alesund, Spitsbergen, an Arctic station. Additionally, data obtained from the millimeterwave radiometer based at Kiruna, Sweden, have been used for an analysis of the 5-day planetary wave.