Berlin 2014 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 3: Atmosphäre - Spurengase

UP 3.1: Vortrag

Dienstag, 18. März 2014, 14:45–15:00, MAG 100

Glyoxal columns retrieved from OMI data as an indicator of fire emissions — •Leonardo Alvarado1, Andreas Richter1, Mihalis Vrekoussis2, Folkard Wittrock1, Andreas Hilboll1, Stefan Schreier1, and John Burrows11Institute of Environmental Physics, University of Bremen, Bremen, Germany — 2Energy, Environment and Water Research Center, The Cyprus Institute, Nicosia, Cyprus

Glyoxal (CHOCHO) is an intermediate product in the oxidation of most Volatile Organic Compounds (VOC) and an indicator of secondary aerosol formation in the atmosphere. It is the smallest of the alpha-dicarbonyls and the most predominant in the atmosphere. CHOCHO originates from natural and anthropogenic activities mainly as secondary production. Nevertheless, about 18% of global glyoxal is due to pyrogenic emissions, of which around 60% are emitted directly by fires, whereas the rest is by secondary production.

Using a newly developed Differential Optical Absorption Spectroscopy (DOAS) retrieval of CHOCHO from satellite measurements by the Ozone Monitoring Instrument (OMI), this study focuses on a comparison between CHOCHO and Fire Radiative Power (FRP) over the large fire event over European Russia in summer 2010. The results show good agreement between the two quantities. The highest values were observed over the same region (east of Moscow) for both products. Moreover, preliminary correlations between CHOCHO and FRP over other regions with large fire emissions are presented.

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