Bremen 2017 – scientific programme

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UP: Fachverband Umweltphysik

UP 5: Postersession

UP 5.13: Poster

Tuesday, March 14, 2017, 16:40–18:10, GW2 B3010

Results of the imaging DOAS instrument IMPACT at CINDI-2 and comparison to MAX-DOAS-observations — •Mareike Ostendorf¹, Enno Peters¹, Anja Schönhardt¹, Andreas Richter¹, André Seyler¹, Folkard Wittrock¹, Stefan Schreier², Mihalis Vrekoussis^1,3, and John P. Burrows¹ — ¹Institut für Umweltphysik (IUP), Universität Bremen, Bremen, Deutschland — ²Institut für Meteorologie, Universität für Bodenkultur Wien (BOKU), Wien, Österreich — ³Zentrum für Marine Umweltwissenschaften (MARUM), Bremen, Deutschland

This contribution presents and discusses the new ground-based instrument IMPACT (Novel Imaging MaPper for Atmospheric observaTions) developed at the IUP Bremen. The instrument uses Differential Optical Absorption Spectroscopy (DOAS) to measure trace gas column amounts, e.g. of NO₂. The special characteristic of the imaging DOAS instrument is the capability to measure in 50 vertical viewing directions (elevation angles) simultaneously. By combination with a pan-tilt head for azimuthal movements, complete hemispheric scans are achieved within a short time. See also accompanying talk by E. Peters.

The measurement and retrieval procedure results in images of distributions of NO₂ and O₄, which yield information about local sources, transport and diurnal variations.

The poster focuses on results and comparisons to MAX-DOAS measurements, which were obtained during the CINDI-2 campaign in summer 2016 in Cabauw, Netherlands.