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UP: Fachverband Umweltphysik
UP 4: Postersession
UP 4.5: Poster
Dienstag, 26. Februar 2013, 17:15–18:30, Poster EG
Application of DOAS Instruments for Trace Gas Measurements on Unmanned Aerial Systems — •Martin Horbanski1,2, Denis Pöhler1, Tobias Mahr1,2, Thomas Wagner1,2, and Ulrich Platt1 — 1Institut für Umweltphysik, Im Neuenheimer Feld 229, 69120 Heidelberg — 2Max-Planck-Institut für Chemie, Hahn-Meitner-Weg 1, 55128 Mainz
Unmanned Aerial Systems (UAS) are a new powerful tool for observations in the atmospheric boundary layer. Recent developments in measuring technology allow constructing compact and sensitive DOAS instruments which can fit the space and weight constraints on UAS. This opens new possibilities for trace gas measurements in the lower troposphere, especially in areas which are not accessible to manned aviation e.g. volcanic plumes or which should be monitored regularly (e.g. industrial emissions of a stack).
A passive DOAS instrument for the APAESO Platform, a medium size UAS, is presented. It is equipped with telescopes for observations in downward and horizontal viewing direction. Thus it allows determining height profiles and spatial distributions of trace gases. For this the light is analyzed by a compact spectrometers which cover the UV-blue range allowing to measure a broad variety of atmospheric trace gases (e.g. NO2, SO2, BrO, IO, ...). Additionally, the nadir direction is equipped with a VIS-NIR spectrometer. It is used to measure and analyse reflection spectra of different types of vegetation. These will serve as references for satellite measurements. The instrumental setup and the results of first test flights are shown.