First results of ambient air measurements with different remote sensing systems over a lake in Germany

In summer 1998 a measurement campaign was performed at the lake Baldeney See in the south of the city of Essen in Germany. Two major goals should be achieved: First the intercomparison of several different remote sensing systems in real field measurements and second the determination of the ozone levels during summer with respect to the complex orographic and climatological situation of the lake Baldeney See which is intensely used as a recreational area. This paper only refers to the first results of the intercomparison of the remote sensing systems open-path FTIR, DOAS, and TDL and some interesting features of the ozone concentration results like secondary ozone peak concentration during night time.