Enhanced role of transition metal Ion catalysis during In-Cloud oxidation of SO2

Eliza Harris; Bärbel Sinha; Dominik Van Pinxteren; Andreas Tilgner; Khanneh Wadinga Fomba; Johannes Schneider; Anja Roth; Thomas Gnauk; Benjamin Fahlbusch; Stephan Mertes; Taehyoung Lee; Jeffrey Collett; Stephen Foley; Stephan Borrmann; Peter Hoppe; Hartmut Herrmann

doi:10.1126/science.1230911

Enhanced role of transition metal Ion catalysis during In-Cloud oxidation of SO2

Eliza Harris^*, Bärbel Sinha, Dominik Van Pinxteren, Andreas Tilgner, Khanneh Wadinga Fomba, Johannes Schneider, Anja Roth, Thomas Gnauk, Benjamin Fahlbusch, Stephan Mertes, Taehyoung Lee, Jeffrey Collett, Stephen Foley, Stephan Borrmann, Peter Hoppe, Hartmut Herrmann

^*Corresponding author for this work

ARC Centre of Excellence for Core to Crust Fluid Systems (incorporation ARC National Key Centre for Geochemical evolution and Metallogeny of Continents (GEMOC))

Research output: Contribution to journal › Article › peer-review

289 Citations (Scopus)

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.

Original language	English
Pages (from-to)	727-730
Number of pages	4
Journal	Science
Volume	340
Issue number	6133
DOIs	https://doi.org/10.1126/science.1230911
Publication status	Published - 2013

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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.",

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T1 - Enhanced role of transition metal Ion catalysis during In-Cloud oxidation of SO2

AU - Harris, Eliza

AU - Sinha, Bärbel

AU - Van Pinxteren, Dominik

AU - Tilgner, Andreas

AU - Fomba, Khanneh Wadinga

AU - Schneider, Johannes

AU - Roth, Anja

AU - Gnauk, Thomas

AU - Fahlbusch, Benjamin

AU - Mertes, Stephan

AU - Lee, Taehyoung

AU - Collett, Jeffrey

AU - Foley, Stephen

AU - Borrmann, Stephan

AU - Hoppe, Peter

AU - Herrmann, Hartmut

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

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VL - 340

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JO - Science

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ER -

Enhanced role of transition metal Ion catalysis during In-Cloud oxidation of SO2

Abstract

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