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Aging of biogenic secondary organic aerosol via gas-phase OH radical reactions

Donahue, N. M. (author)
Henry, K. M. (author)
Mentel, T. F. (author)
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Kiendler-Scharr, A. (author)
Spindler, C. (author)
Bohn, B. (author)
Brauers, T. (author)
Dorn, H. P. (author)
Fuchs, H. (author)
Tillmann, R. (author)
Wahner, A. (author)
Saathoff, H. (author)
Naumann, K. H. (author)
Mohler, O. (author)
Leisner, T. (author)
Muller, L. (author)
Reinnig, M. C. (author)
Hoffmann, T. (author)
Salo, Kent, 1967 (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
Hallquist, Mattias, 1969 (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
Frosch, M. (author)
Bilde, M. (author)
Tritscher, T. (author)
Barmet, P. (author)
Praplan, A. P. (author)
DeCarlo, P. F. (author)
Dommen, J. (author)
Prevot, A. S. H. (author)
Baltensperger, U. (author)
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 (creator_code:org_t)
2012-08-06
2012
English.
In: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 109:34, s. 13503-13508
Related links:
https://www.pnas.org...
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http://dx.doi.org/10...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The Multiple Chamber Aerosol Chemical Aging Study (MUCHACHAS) tested the hypothesis that hydroxyl radical (OH) aging significantly increases the concentration of first-generation biogenic secondary organic aerosol (SOA). OH is the dominant atmospheric oxidant, and MUCHACHAS employed environmental chambers of very different designs, using multiple OH sources to explore a range of chemical conditions and potential sources of systematic error. We isolated the effect of OH aging, confirming our hypothesis while observing corresponding changes in SOA properties. The mass increases are consistent with an existing gap between global SOA sources and those predicted in models, and can be described by a mechanism suitable for implementation in those models.

Subject headings

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)
NATURVETENSKAP  -- Kemi -- Analytisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
NATURVETENSKAP  -- Kemi -- Organisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Organic Chemistry (hsv//eng)
NATURVETENSKAP  -- Kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Keyword

atmospheric chemistry
biosphere-atmosphere interactions
volatility basis-set
alpha-pinene
mass-spectrometer
pinonic acid
ozonolysis
chemistry
chamber
particles
yields
model
biosphere-atmosphere interactions

Publication and Content Type

ref (subject category)
art (subject category)

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