Researchers demonstrate direct formation of sulfuric acid in the atmosphere without SO2

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Researchers demonstrate direct formation of sulfuric acid in the atmosphere without SO2
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In the atmosphere, gaseous sulfuric acid can form particles that influence the physical properties of clouds. Thus, the formation of sulfuric acid in the gas phase directly affects the radiative forcing and Earth's climate.

oxidation by OH radicals or Criegee intermediates, although this has long been speculated about in the literature and even such pathways are implemented in models," explains Dr. Torsten Berndt of TROPOS.formation has now been achieved using two flow systems: a horizontal free-jet flow system and a vertical laminar flow tube.

The experimental results were integrated into the complex multiphase chemistry mechanism MCM/CAPRAM existing at TROPOS for model evaluation."Under the relatively pristine conditions over the Southern oceans, the direct formation of Hcan contribute up to 50% to the total gas phase formation," report Dr. Andreas Tilgner and Dr. Erik H. Hoffmann.formation may be especially important over oceans in the Southern Hemisphere.

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