A European aerosol phenomenology-4 : Harmonized concentrations of carbonaceous aerosol at 10 regional background sites across Europe

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Cavalli , F , Alastuey , A , Areskoug , H , Ceburnis , D , Cech , J , Genberg , J , Harrison , R M , Jaffrezo , J L , Kiss , G , Laj , P , Mihalopoulos , N , Perez , N , Quincey , P , Schwarz , J , Sellegri , K , Spindler , G , Swietlicki , E , Theodosi , C , Yttri , K E , Aas , W & Putaud , J P 2016 , ' A European aerosol phenomenology-4 : Harmonized concentrations of carbonaceous aerosol at 10 regional background sites across Europe ' Atmospheric Environment , vol. 144 , pp. 133-145 . DOI: 10.1016/j.atmosenv.2016.07.050

Title: A European aerosol phenomenology-4 : Harmonized concentrations of carbonaceous aerosol at 10 regional background sites across Europe
Author: Cavalli, F.; Alastuey, A.; Areskoug, H.; Ceburnis, D.; Cech, J.; Genberg, J.; Harrison, R. M.; Jaffrezo, J. L.; Kiss, G.; Laj, P.; Mihalopoulos, N.; Perez, N.; Quincey, P.; Schwarz, J.; Sellegri, K.; Spindler, G.; Swietlicki, E.; Theodosi, C.; Yttri, K. E.; Aas, W.; Putaud, J. P.
Contributor: University of Helsinki, Department
Date: 2016-11
Language: eng
Number of pages: 13
Belongs to series: Atmospheric Environment
ISSN: 1352-2310
URI: http://hdl.handle.net/10138/224279
Abstract: Although particulate organic and elemental carbon (OC and EC) are important constituents of the suspended atmospheric particulate matter (PM), measurements of OC and EC are much less common and More uncertain than measurements of e.g. the ionic components of PM. In the framework of atmospheric research infrastructures supported by the European Union, actions have been undertaken to determine and mitigate sampling artefacts, and assess the comparability of OC and EC data obtained in a network of 10 atmospheric observatories across Europe. Positive sampling artefacts (from 0:4 to 2.8 mu g C/m(3)) and analytical discrepancies (between -50% and +40% for the EC/TC ratio) have been taken into account to generate a robust data set, from which we established the phenomenology of carbonaceous aerosols at regional background sites in Europe. Across the network, TC and EC annual average concentrations range from 0.4 to 9 mu g C/m(3), and from 0.1 to 2 mu g C/m(3), respectively. TC/PM10 annual mean ratios range from 0.11 at a Mediterranean site to 0.34 at the most polluted continental site, and TC/PM2.5 ratios are slightly greater at all sites (0.15-0.42). EC/TC annual mean ratios range from 0.10 to 0.22, and do not depend much on PM concentration levels, especially in winter. Seasonal variations in PM and TC concentrations, and in TC/PM and EC/TC ratios, differ across the network, which can be explained by seasonal changes in PM source contributions at some sites. (C) 2016 The Authors. Published by Elsevier Ltd.
Subject: Aerosol
Carbonaceous
PM
Phenomenology
Europe
EVALUATION PROGRAM EMEP
PARTICULATE MATTER
ORGANIC-CARBON
SAMPLING ARTIFACTS
SOURCE APPORTIONMENT
ELEMENTAL CARBON
TRACER ANALYSIS
AIR-QUALITY
URBAN
MASS
114 Physical sciences
1172 Environmental sciences
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