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UP: Fachverband Umweltphysik

UP 7: Posters

UP 7.3: Poster

Mittwoch, 28. Februar 2024, 16:30–18:30, ELP 6: Foyer

Characterisation and deployment of a Pandora DOAS instrument in Heidelberg — •Johannes Hägele, Karolin Voss, Ralph Kleinschek, and André Butz — Institute of Environmental Physics, Heidelberg University, Germany

Over the past five decades, Differential Optical Absorption Spectroscopy (DOAS) has been used successfully for the measurement of various atmospheric trace gases such as O₃ and NO₂. In order to establish a global network of DOAS measurements, NASA and ESA collaborate on the Pandonia Global Network using their custom-built Pandora instruments.

Here, we report on our progress in deploying a Pandora setup at the Institute of Environmental Physics in Heidelberg. The instrument is suitable for both direct sun and moon as well as sky scanning measurements and uses 2 Czerny-Turner spectrometers with a wavelength range of 280-530 nm and 380-900 nm, respectively. It will be set up at the institute’s roof close to the city centre. So far, we have optically and electronically characterized the spectrometers using a set of different lamp and dark measurements. For spectrometer 1, the electronic readout induces a spatially oscillatory signal of unknown origin which influences the instrument noise.

Keywords: DOAS; NO2; Pandora