Enhanced Role of Transition Metal Ion Catalysis During In-Cloud Oxidation of SO2

被引：326

作者：

Harris, Eliza ^{[1
]}

Sinha, Baerbel ^{[1
,2
]}

van Pinxteren, Dominik ^{[3
]}

Tilgner, Andreas ^{[3
]}

Fomba, Khanneh Wadinga ^{[3
]}

Schneider, Johannes ^{[1
]}

Roth, Anja ^{[1
]}

Gnauk, Thomas ^{[3
]}

Fahlbusch, Benjamin ^{[3
]}

Mertes, Stephan ^{[3
]}

Lee, Taehyoung ^{[4
]}

Collett, Jeffrey ^{[4
]}

Foley, Stephen ^{[5
]}

Borrmann, Stephan ^{[1
,6
]}

Hoppe, Peter ^{[1
]}

Herrmann, Hartmut ^{[3
]}

机构：

[1] Max Planck Inst Chem, Particle Chem Dept, D-55128 Mainz, Germany

[2] IISER Mohali, Dept Earth Sci, Manauli 140306, India

[3] Leibniz Inst Tropospher Res TROPOS, D-04318 Leipzig, Germany

[4] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA

[5] Johannes Gutenberg Univ Mainz, Inst Geosci, Earth Syst Sci Res Ctr, D-55128 Mainz, Germany

[6] Johannes Gutenberg Univ Mainz, Inst Atmospher Phys, D-55128 Mainz, Germany

来源：

SCIENCE | 2013年 / 340卷 / 6133期

基金：

美国国家科学基金会;

关键词：

SULFUR ISOTOPE FRACTIONATION; AEROSOL LIGHT-SCATTERING; HETEROGENEOUS OXIDATION; SULFATE PRODUCTION; GLOBAL-MODEL; CHEMISTRY; IRON; IMPACT; CYCLE; DUST;

D O I：

10.1126/science.1230911

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

070301 [无机化学]; 070403 [天体物理学]; 070507 [自然资源与国土空间规划学]; 090105 [作物生产系统与生态工程];

摘要：

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.

引用

页码：727 / 730

页数：4

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