München 2019 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 4: Trace gases and greenhouse gases

UP 4.5: Vortrag

Mittwoch, 20. März 2019, 12:15–12:30, HS 22

First resuls of total water vapour column from Sentinel-5P derived by the AMC-DOAS method — •Tobias Küchler, Stefan Noël, Heinrich Bovensmann, and John P. Burrows — University of Bremen, Bremen, Germany

Water vapour is the most abundant and also the most important natural greenhouse gas and plays a key role in tropospheric chemistry, as source of the hydroxyl radical, OH, and as a third body in key reactions of hydroperoxyl radical, HO2. Its amount is highly variable and is also affected by anthropogenic global warming. To investigate these effects, long time series of global water vapour amount and distribution are required.

The Air Mass Corrected Differential Optical Absorption Spectroscopy (AMC-DOAS) approach to derive global water vapour vertical columns was originally developed for Global Ozone Monitoring Experiment (GOME) on ERS-2, but has been applied also to measurements of the SCIAMACHY instrument on ENVISAT and the GOME-2 instruments on METOP-A and METOP-B. An application of the AMC-DOAS method to TROPOMI data on Sentinel-5P is currently under development.

In this presentation, we show promising results from our research. These include validations with independent data sets to assess the quality of the derived data will be shown. Since there is currently no operational water vapour product from Sentinel-5P, the new AMC-DOAS product will provide a valuable addition to the Sentinel 5P project.