Berlin 2012 – scientific programme

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UP: Fachverband Umweltphysik

UP 9: Poster session

UP 9.7: Poster

Wednesday, March 28, 2012, 18:30–19:15, Poster F

Retrieval of Atmospheric Aerosol and Trace Gas Profiles using MAX-DOAS — •S. Yilmaz¹, U. Friess¹, U. Platt¹, A. Apituley², R. van der A², A. Piters², and B. Henzing³ — ¹IUP, University of Heidelberg, Germany — ²KNMI, De Bilt, The Netherlands — ³TNO, Utrecht, The Netherlands

Aerosols and trace gases are key components of the physical and chemical processes in the atmosphere. The observation of these components is crucial for the improvement of numerical models used for the prediction of atmospheric composition and climate. Therefore, novel techniques are desirable, which allow for comprehensive observations in worldwide networks. In the recent years, remarkable advances in the application of the Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) technique for the retrieval of atmospheric aerosol and trace gas profiles have been made. The approach of combining MAX-DOAS trace gas measurements with advanced numerical inversion methods allows for the height resolved determination of the constituents in the lower troposphere.
We report on comparisons of aerosol extinction profiles retrieved from MAX-DOAS observations with LIDAR and in-situ measurements. Additionally, the comparison of NO₂ profiles retrieved from MAX-DOAS with satellite and in-situ measurements is presented. The independent datasets are generally highly correlated and show very good agreement. We conclude that MAX-DOAS is a powerful tool, which is highly suited for cost-effective and automated remote sensing measurements and the integration in networks for atmospheric composition observations.