Hygroscopic properties of smoke-generated organic aerosol particles emitted in the marine atmosphere

A. Wonaschütz; M. Coggon; A. Sorooshian; R. Modini; A. A. Frossard; L. Ahlm; J. Mülmenstädt; G. C. Roberts; L. M. Russell; S. Dey; F. J. Brechtel; J. H. Seinfeld

doi:10.5194/acp-13-9819-2013

Hygroscopic properties of smoke-generated organic aerosol particles emitted in the marine atmosphere

A. Wonaschütz, M. Coggon, A. Sorooshian, R. Modini, A. A. Frossard, L. Ahlm, J. Mülmenstädt, G. C. Roberts, L. M. Russell, S. Dey, F. J. Brechtel, J. H. Seinfeld

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Abstract

During the Eastern Pacific Emitted Aerosol Cloud Experiment (E-PEACE), a plume of organic aerosol was produced by a smoke generator and emitted into the marine atmosphere from aboard the R/V Point Sur. In this study, the hygroscopic properties and the chemical composition of the plumewere studied at plume ages between 0 and 4 h in different meteorological conditions. In sunny conditions, the plume particles had very low hygroscopic growth factors (GFs): between 1.05 and 1.09 for 30 nm and between 1.02 and 1.1 for 150 nm dry size at a relative humidity (RH) of 92 %, contrasted by an average marine background GF of 1.6. New particles were produced in large quantities (several 10 000 cm.^-3), which lead to substantially increased cloud condensation nuclei (CCN) concentrations at supersaturations between 0.07 and 0.88 %. Ratios of oxygen to carbon (O : C) andwater-soluble organic mass (WSOM) increased with plume age: From.

Original language	English (US)
Pages (from-to)	9819-9835
Number of pages	17
Journal	Atmospheric Chemistry and Physics
Volume	13
Issue number	19
DOIs	https://doi.org/10.5194/acp-13-9819-2013
State	Published - 2013

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Atmospheric Science

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10.5194/acp-13-9819-2013

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Wonaschütz, A., Coggon, M., Sorooshian, A., Modini, R., Frossard, A. A., Ahlm, L., Mülmenstädt, J., Roberts, G. C., Russell, L. M., Dey, S., Brechtel, F. J., & Seinfeld, J. H. (2013). Hygroscopic properties of smoke-generated organic aerosol particles emitted in the marine atmosphere. Atmospheric Chemistry and Physics, 13(19), 9819-9835. https://doi.org/10.5194/acp-13-9819-2013

Wonaschütz, A, Coggon, M, Sorooshian, A, Modini, R, Frossard, AA, Ahlm, L, Mülmenstädt, J, Roberts, GC, Russell, LM, Dey, S, Brechtel, FJ & Seinfeld, JH 2013, 'Hygroscopic properties of smoke-generated organic aerosol particles emitted in the marine atmosphere', Atmospheric Chemistry and Physics, vol. 13, no. 19, pp. 9819-9835. https://doi.org/10.5194/acp-13-9819-2013

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abstract = "During the Eastern Pacific Emitted Aerosol Cloud Experiment (E-PEACE), a plume of organic aerosol was produced by a smoke generator and emitted into the marine atmosphere from aboard the R/V Point Sur. In this study, the hygroscopic properties and the chemical composition of the plumewere studied at plume ages between 0 and 4 h in different meteorological conditions. In sunny conditions, the plume particles had very low hygroscopic growth factors (GFs): between 1.05 and 1.09 for 30 nm and between 1.02 and 1.1 for 150 nm dry size at a relative humidity (RH) of 92 %, contrasted by an average marine background GF of 1.6. New particles were produced in large quantities (several 10 000 cm.-3), which lead to substantially increased cloud condensation nuclei (CCN) concentrations at supersaturations between 0.07 and 0.88 %. Ratios of oxygen to carbon (O : C) andwater-soluble organic mass (WSOM) increased with plume age: From.",

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AU - Ahlm, L.

AU - Mülmenstädt, J.

AU - Roberts, G. C.

AU - Russell, L. M.

AU - Dey, S.

AU - Brechtel, F. J.

AU - Seinfeld, J. H.

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Hygroscopic properties of smoke-generated organic aerosol particles emitted in the marine atmosphere

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