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Connecting hygrosco...
Connecting hygroscopic growth at high humidities to cloud activation for different particle types
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Wex, H. (author)
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Stratmann, F. (author)
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- Hennig, Tabea (author)
- Stockholms universitet,Institutionen för tillämpad miljövetenskap (ITM)
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Hartmann, S. (author)
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Niedermeier, D. (author)
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Nilsson, E. (author)
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Ocskay, R. (author)
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Rose, D. (author)
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Salma, I. (author)
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Ziese, M. (author)
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- Fors, Erik (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 2008-07-24
- 2008
- English.
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In: Environmental Research Letters. - : IOP Publishing. - 1748-9326. ; 3:3, s. 35004-
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http://dx.doi.org/10...
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Abstract
Subject headings
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- This work recompiles studies that have been done with respect to hygroscopic growth in the regime of high relative humidities and with respect to activation for different kinds of particle at LACIS (Leipzig Aerosol Cloud Interaction Simulator) during the last few years. The particles examined consisted of a mixture of succinic acid and ammonium sulfate, seawater samples, soot coated with an organic and/or an inorganic substance, and two different atmospheric HULIS (HUmic LIke Substance) samples. An influence of changing non-ideal behavior and of slightly soluble substances on the hygroscopic growth was found in varying degrees in the subsaturation regime. The measured hygroscopic growth was extrapolated towards supersaturation, using a simple form of the Kohler equation, and assuming a constant number of molecules/ions in solution for high relative humidities (>= 95% or >= 98%, depending on the particles). When the surface tension of water was used, the modeled critical supersaturations reproduced the measured ones for the seawater samples and for the coated soot particles. To reach agreement between measured and modeled critical supersaturations for the HULIS particles, a concentration-dependent surface tension had to be used, with values of the surface tension that were lower than that of water, but larger than those that had been reported for bulk measurements in the past.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- hygroscopic growth
- activation
- surface tension
- slight solubility
- non-ideal behavior
- Earth sciences
- Geovetenskap
- surface tension
- hygroscopic growth
- activation
- slight solubility
- non-ideal behavior
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Wex, H.
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Stratmann, F.
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Hennig, Tabea
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Hartmann, S.
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Niedermeier, D.
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Nilsson, E.
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show more...
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Ocskay, R.
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Rose, D.
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Salma, I.
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Ziese, M.
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Fors, Erik
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
- Articles in the publication
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Environmental Re ...
- By the university
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Stockholm University
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Lund University