Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations
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 is...
Published in: | Atmospheric Chemistry and Physics |
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Online Access: | http://hdl.handle.net/10379/10300 https://doi.org/10.5194/acp-13-895-2013 |
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ftnuigalway:oai:aran.library.nuigalway.ie/:10379/10300 2023-06-11T04:06:48+02:00 Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations 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. 2013-01-22 http://hdl.handle.net/10379/10300 https://doi.org/10.5194/acp-13-895-2013 unknown Copernicus GmbH Atmospheric Chemistry and Physics 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 1680-7324 http://hdl.handle.net/10379/10300 doi:10.5194/acp-13-895-2013 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ bend regional aerosol size distributions air-quality boundary-layer source apportionment northern-hemisphere atmospheric aerosol particulate matter seasonal-variation background sites Article 2013 ftnuigalway https://doi.org/10.5194/acp-13-895-2013 2023-05-28T18:04:59Z 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. Article in Journal/Newspaper Antarc* Antarctica National University of Ireland (NUI), Galway: ARAN Pacific Atmospheric Chemistry and Physics 13 2 895 916 |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
unknown |
topic |
bend regional aerosol size distributions air-quality boundary-layer source apportionment northern-hemisphere atmospheric aerosol particulate matter seasonal-variation background sites |
spellingShingle |
bend regional aerosol size distributions air-quality boundary-layer source apportionment northern-hemisphere atmospheric aerosol particulate matter seasonal-variation background sites 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. Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations |
topic_facet |
bend regional aerosol size distributions air-quality boundary-layer source apportionment northern-hemisphere atmospheric aerosol particulate matter seasonal-variation background sites |
description |
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. |
format |
Article in Journal/Newspaper |
author |
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. |
author_facet |
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. |
author_sort |
Asmi, A. |
title |
Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations |
title_short |
Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations |
title_full |
Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations |
title_fullStr |
Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations |
title_full_unstemmed |
Aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations |
title_sort |
aerosol decadal trends – part 2: in-situ aerosol particle number concentrations at gaw and actris stations |
publisher |
Copernicus GmbH |
publishDate |
2013 |
url |
http://hdl.handle.net/10379/10300 https://doi.org/10.5194/acp-13-895-2013 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Atmospheric Chemistry and Physics 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 1680-7324 http://hdl.handle.net/10379/10300 doi:10.5194/acp-13-895-2013 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.5194/acp-13-895-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
2 |
container_start_page |
895 |
op_container_end_page |
916 |
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1768378970096533504 |