title: Enhanced role of transition metal ion catalysis during in-cloud oxidation of SO2.
abstract: Global sulfate production plays a key role in aerosol radiative forcing; more than half of this production occurs in clouds. We found that sulfur dioxide oxidation catalyzed by natural transition metal ions is the dominant in-cloud oxidation pathway. The pathway was observed to occur primarily on coarse mineral dust, so the sulfate produced will have a short lifetime and little direct or indirect climatic effect. Taking this into account will lead to large changes in estimates of the magnitude and spatial distribution of aerosol forcing. Therefore, this oxidation pathway-which is currently included in only one of the 12 major global climate models-will have a significant impact on assessments of current and future climate.
authors: Particle Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany. elizah@mit.edu
authors: Eliza
authors: E
authors: Harris
authors: Bärbel
authors: B
authors: Sinha
authors: Dominik
authors: D
authors: van Pinxteren
authors: Andreas
authors: A
authors: Tilgner
authors: Khanneh Wadinga
authors: KW
authors: Fomba
authors: Johannes
authors: J
authors: Schneider
authors: Anja
authors: A
authors: Roth
authors: Thomas
authors: T
authors: Gnauk
authors: Benjamin
authors: B
authors: Fahlbusch
authors: Stephan
authors: S
authors: Mertes
authors: Taehyoung
authors: T
authors: Lee
authors: Jeffrey
authors: J
authors: Collett
authors: Stephen
authors: S
authors: Foley
authors: Stephan
authors: S
authors: Borrmann
authors: Peter
authors: P
authors: Hoppe
authors: Hartmut
authors: H
authors: Herrmann
mesh_terms: D000336:Aerosols; D001272:Atmosphere / Q000737:chemistry*; D002384:Catalysis; D002980:Climate; D004391:Dust; D008903:Minerals / Q000737:chemistry; D010084:Oxidation-Reduction; D013458:Sulfur Dioxide / Q000737:chemistry*; D028561:Transition Elements
chemical_list: D000336:Aerosols; D004391:Dust; D008903:Minerals; D028561:Transition Elements; D013458:Sulfur Dioxide