Due to political disturbances in Venezuela we operated our instrument at the Environmental Research Station Schneefernerhaus (Umwelt Forschungsstation Schneefernerhaus, UFS) on mount Zugspitze (47.4°N, 11°E, 2650 m asl) from February 12th to July 18th, 2003.

For more information about the UFS visit these websites of Schneefernerhaus and Earth Observation Center DLR. 

On the website of Schneefernerhaus you can find the latest picture taken by the UFS live webcam which is viewing in the same direction as our radiometer. 

The figure beside shows the time series of ozone vmr profiles (upper panel), ozone column amounts (middle panel), and nitrous oxide (lower panel).

Around day 79 the edge of the polar vortex was over mount Zugspitze, resulting in decreasing maximum ozone mixing ratios and descending N₂O isopleths. No increase of the ozone column amounts could be observed which might be caused by chemical ozone depletion inside the vortex and the vortex edge region.

From spring to summer effects of the buoyancy in the atmosphere can be seen.