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Hygroscopicity and ...
Hygroscopicity and CCN potential of DMS-derived aerosol particles
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- Rosati, Bernadette (författare)
- Aarhus University,University of Vienna
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- Isokääntä, Sini (författare)
- University of Eastern Finland
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- Christiansen, Sigurd, 1988- (författare)
- Stockholm University,Stockholms universitet,Institutionen för miljövetenskap,Aarhus University, Denmark; University of the Faroe Islands, Faroe Islands
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- Jensen, Mads Mørk (författare)
- Aarhus University
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- Moosakutty, Shamjad P. (författare)
- Aarhus University,Qatar Energy and Environment Research Institute (QEERI)
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- De Jonge, Robin Wollesen (författare)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,LTH profilområde: Aerosoler,LTH profilområden,Centre for Environmental and Climate Science (CEC),Faculty of Science,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,Aarhus University
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- Massling, Andreas (författare)
- Aarhus University
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- Glasius, Marianne (författare)
- Aarhus University
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- Elm, Jonas (författare)
- Aarhus University
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- Virtanen, Annele (författare)
- University of Eastern Finland
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- Bilde, Merete (författare)
- Aarhus University
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(creator_code:org_t)
- 2022-10-19
- 2022
- Engelska.
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Ingår i: Atmospheric Chemistry And Physics. - : Copernicus GmbH. - 1680-7316 .- 1680-7324. ; 22:20, s. 13449-13466
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https://doi.org/10.5...
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http://dx.doi.org/10... (free)
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https://urn.kb.se/re...
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https://doi.org/10.5...
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Abstract
Ämnesord
Stäng
- Dimethyl sulfide (DMS) is emitted by phytoplankton species in the oceans and constitutes the largest source of naturally emitted sulfur to the atmosphere. The climate impact of secondary particles, formed through the oxidation of DMS by hydroxyl radicals, is still elusive. This study investigates the hygroscopicity and cloud condensation nuclei activity of such particles and discusses the results in relation to their chemical composition. We show that mean hygroscopicity parameters, κ, during an experiment for particles of 80 nm in diameter range from 0.46 to 0.52 or higher, as measured at both sub- and supersaturated water vapour conditions. Ageing of the particles leads to an increase in κ from, for example, 0.50 to 0.58 over the course of 3 h (Exp. 7). Aerosol mass spectrometer measurements from this study indicate that this change most probably stems from a change in chemical composition leading to slightly higher fractions of ammonium sulfate compared to methanesulfonic acid (MSA) within the particles with ageing time. Lowering the temperature to 258 K increases κ slightly, particularly for small particles. These κ values are well comparable to previously reported model values for MSA or mixtures between MSA and ammonium sulfate. Particle nucleation and growth rates suggest a clear temperature dependence, with slower rates at cold temperatures. Quantum chemical calculations show that gas-phase MSA clusters are predominantly not hydrated, even at high humidity conditions, indicating that their gas-phase chemistry should be independent of relative humidity.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
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Rosati, Bernadet ...
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Isokääntä, Sini
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Christiansen, Si ...
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Jensen, Mads Mør ...
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Moosakutty, Sham ...
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De Jonge, Robin ...
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visa fler...
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Massling, Andrea ...
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Glasius, Mariann ...
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Elm, Jonas
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Virtanen, Annele
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Bilde, Merete
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visa färre...
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Stockholms universitet
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