Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations
dc.contributor.author | Asmi, A. | |
dc.contributor.author | Collaud Coen, M. | |
dc.contributor.author | Ogren, J. A. | |
dc.contributor.author | Andrews, E. | |
dc.contributor.author | Sheridan, P. | |
dc.contributor.author | Jefferson, A. | |
dc.contributor.author | Weingartner, E. | |
dc.contributor.author | Baltensperger, U. | |
dc.contributor.author | Bukowiecki, N. | |
dc.contributor.author | Lihavainen, H. | |
dc.contributor.author | Kivekäs, N. | |
dc.contributor.author | Asmi, E. | |
dc.contributor.author | Aalto, P. P. | |
dc.contributor.author | Kulmala, M. | |
dc.contributor.author | Wiedensohler, A. | |
dc.contributor.author | Birmili, W. | |
dc.contributor.author | Hamed, A. | |
dc.contributor.author | O'Dowd, C. | |
dc.contributor.author | G Jennings, S. | |
dc.contributor.author | Weller, R. | |
dc.contributor.author | Flentje, H. | |
dc.contributor.author | Fjaeraa, A. M. | |
dc.contributor.author | Fiebig, M. | |
dc.contributor.author | Myhre, C. L. | |
dc.contributor.author | Hallar, A. G. | |
dc.contributor.author | Swietlicki, E. | |
dc.contributor.author | Kristensson, A. | |
dc.contributor.author | Laj, P. | |
dc.date.accessioned | 2018-09-20T16:00:10Z | |
dc.date.available | 2018-09-20T16:00:10Z | |
dc.date.issued | 2013-01-22 | |
dc.identifier.citation | Asmi, A. Collaud Coen, M.; Ogren, J. A.; Andrews, E.; Sheridan, P.; Jefferson, A.; Weingartner, E.; Baltensperger, U.; Bukowiecki, N.; Lihavainen, H.; Kivekäs, N.; Asmi, E.; Aalto, P. P.; Kulmala, M.; Wiedensohler, A.; Birmili, W.; Hamed, A.; O'Dowd, C.; G Jennings, S.; Weller, R.; Flentje, H.; Fjaeraa, A. M.; Fiebig, M.; Myhre, C. L.; Hallar, A. G.; Swietlicki, E.; Kristensson, A.; Laj, P. (2013). Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations. Atmospheric Chemistry and Physics 13 (2), 895-916 | |
dc.identifier.issn | 1680-7324 | |
dc.identifier.uri | http://hdl.handle.net/10379/10300 | |
dc.description.abstract | 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. | |
dc.publisher | Copernicus GmbH | |
dc.relation.ispartof | Atmospheric Chemistry and Physics | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | bend regional aerosol | |
dc.subject | size distributions | |
dc.subject | air-quality | |
dc.subject | boundary-layer | |
dc.subject | source apportionment | |
dc.subject | northern-hemisphere | |
dc.subject | atmospheric aerosol | |
dc.subject | particulate matter | |
dc.subject | seasonal-variation | |
dc.subject | background sites | |
dc.title | Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations | |
dc.type | Article | |
dc.identifier.doi | 10.5194/acp-13-895-2013 | |
dc.local.publishedsource | http://doi.org/10.5194/acp-13-895-2013 | |
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