Detecting high contributions of primary organic matter to marine aerosol: A case study

被引：102

作者：

Ovadnevaite, Jurgita ^{[1
,2
]}

O'Dowd, Colin ^{[1
,2
]}

Dall'Osto, Manuel ^{[1
,2
]}

Ceburnis, Darius ^{[1
,2
]}

Worsnop, Douglas R. ^{[3
,4
]}

Berresheim, Harald ^{[1
,2
]}

机构：

[1] Natl Univ Ireland Galway, Sch Phys, Galway, Ireland

[2] Natl Univ Ireland Galway, Ctr Climate & Air Pollut Studies, Galway, Ireland

[3] Aerodyne Res Inc, Billerica, MA 01821 USA

[4] Univ Helsinki, Dept Phys, Helsinki, Finland

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

基金：

爱尔兰科学基金会;

关键词：

MACE HEAD; MASS-SPECTROMETER; HIGH-RESOLUTION; EVOLUTION; ATLANTIC; CARBON; OCEAN; AIR;

D O I：

10.1029/2010GL046083

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Using on-line High-Resolution Aerosol Mass Spectrometry, we report submicron organic marine aerosol plume concentrations peaking at 3.8 mu g m(-3). These concentrations are far greater than previously determined by off-line techniques and can exceed typical terrestrial concentrations of organic aerosol. The organic mass comprised 77% of the total submicron non-refractory mass and such plumes were associated with regions of high biological activity and moderately-high wind speeds over the N.E. Atlantic. High-resolution mass spectra analysis revealed a unique marine organic aerosol fingerprint, when compared to anthropogenic organic aerosol, and in particular, anthropogenic hydrocarbons. 37% hydrocarbon and 63% oxygenated hydrocarbon speciation was observed for the organic mass, indicating that at least 37% of the organic mass is produced via primary sea-spray. The hydrocarbon and oxygenated hydrocarbon species were highly correlated (r > 0.99) suggesting a significant, if not dominant, fraction of the oxygenated component is also likely to be sea-spray in origin. Citation: Ovadnevaite, J., C. O'Dowd, M. Dall'Osto, D. Ceburnis, D. R. Worsnop, and H. Berresheim (2011), Detecting high contributions of primary organic matter to marine aerosol: A case study, Geophys. Res. Lett., 38, L02807, doi: 10.1029/2010GL046083.

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