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Aerosol decadal tre...
Aerosol decadal trends - Part 2: In-situ aerosol particle number concentrations at GAW and ACTRIS stations
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Asmi, A. (author)
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Coen, M. Collaud (author)
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Ogren, J. A. (author)
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Andrews, E. (author)
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Sheridan, P. (author)
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Jefferson, A. (author)
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Weingartner, E. (author)
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Baltensperger, U. (author)
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Bukowiecki, N. (author)
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Lihavainen, H. (author)
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Kivekas, N. (author)
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Asmi, E. (author)
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Aalto, P. P. (author)
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Kulmala, M. (author)
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Wiedensohler, A. (author)
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Birmili, W. (author)
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Hamed, A. (author)
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O'Dowd, C. (author)
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Jennings, S. G. (author)
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Weller, R. (author)
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Flentje, H. (author)
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Fjaeraa, A. M. (author)
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Fiebig, M. (author)
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Myhre, C. L. (author)
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Hallar, A. G. (author)
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- Swietlicki, 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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- Kristensson, Adam (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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Laj, P. (author)
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(creator_code:org_t)
- 2013-01-22
- 2013
- English.
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In: Atmospheric Chemistry and Physics. - : Copernicus GmbH. - 1680-7324. ; 13:2, s. 895-916
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Abstract
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- We have analysed the trends of total aerosol particle number concentrations (N) measured at long-term measurement stations involved either in the Global Atmosphere Watch (GAW) and/or EU infrastructure project ACTRIS. The sites are located in Europe, North America, Antarctica, and on Pacific Ocean islands. The majority of the sites showed clear decreasing trends both in the full-length time series, and in the intra-site comparison period of 2001-2010, especially during the winter months. Several potential driving processes for the observed trends were studied, and even though there are some similarities between N trends and air temperature changes, the most likely cause of many northern hemisphere trends was found to be decreases in the anthropogenic emissions of primary particles, SO2 or some co-emitted species. We could not find a consistent agreement between the trends of N and particle optical properties in the few stations with long time series of all of these properties. The trends of N and the proxies for cloud condensation nuclei (CCN) were generally consistent in the few European stations where the measurements were available. This work provides a useful comparison analysis for modelling studies of trends in aerosol number concentrations.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Asmi, A.
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Coen, M. Collaud
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Ogren, J. A.
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Andrews, E.
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Sheridan, P.
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Jefferson, A.
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show more...
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Weingartner, E.
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Baltensperger, U ...
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Bukowiecki, N.
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Lihavainen, H.
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Kivekas, N.
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Asmi, E.
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Aalto, P. P.
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Kulmala, M.
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Wiedensohler, A.
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Birmili, W.
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Hamed, A.
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O'Dowd, C.
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Jennings, S. G.
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Weller, R.
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Flentje, H.
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Fjaeraa, A. M.
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Fiebig, M.
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Myhre, C. L.
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Hallar, A. G.
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Swietlicki, Erik
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Kristensson, Ada ...
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Laj, P.
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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 Physical Science ...
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and Subatomic Physic ...
- Articles in the publication
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Atmospheric Chem ...
- By the university
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Lund University