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Erik Swietlicki. Foto.

Erik Swietlicki

Professor

Erik Swietlicki. Foto.

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

Författare

  • F. Cavalli
  • A. Alastuey
  • H. Areskoug
  • D. Ceburnis
  • J. Čech
  • J. Genberg
  • R. M. Harrison
  • J. L. Jaffrezo
  • G. Kiss
  • P. Laj
  • N. Mihalopoulos
  • N. Perez
  • P. Quincey
  • J. Schwarz
  • K. Sellegri
  • G. Spindler
  • E. Swietlicki
  • C. Theodosi
  • K. E. Yttri
  • W. Aas
  • J. P. Putaud
Visa allt

Summary, in English

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 μg C/m3) 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 μg C/m3, and from 0.1 to 2 μg C/m3, 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.

Avdelning/ar

  • Kärnfysik
  • MERGE: ModElling the Regional and Global Earth system

Publiceringsår

2016-11-01

Språk

Engelska

Sidor

133-145

Publikation/Tidskrift/Serie

Atmospheric Environment

Volym

144

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Meteorology and Atmospheric Sciences

Nyckelord

  • Aerosol
  • Carbonaceous
  • Europe
  • Phenomenology
  • PM

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1352-2310