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European surface ozone in the extreme summer 2003

Solberg, S. and Hov, Ø. and Søvde, A. and Isaksen, S.A. and Coddeville, P. and De Backer, H. and Forster, C. and Orsolini, O. and Uhse, K. (2008) European surface ozone in the extreme summer 2003. Journal of Geophysical Research, 113 (D07307), pp. 1-16. DOI: 10.1029/2007JD009098.

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Official URL: http://www.agu.org/journals/jd/jd0807/2007JD009098/2007JD009098.pdf

Abstract

Measurements of ozone and other trace species in the European EMEP network in 2003 are presented. The European summer of 2003 was exceptionally warm and the surface ozone data for central Europe show the highest values since the end of the 1980s. The 99 percentiles of daily maximum hourly ozone concentrations in 2003 was higher than the corresponding parameter measured in any previous year at many sites in France, Germany, Switzerland and Austria. In this paper we argue that a number of positive feedback effects between the weather conditions and ozone contributed to the elevated surface ozone. Firstly we calculated an extended residence time of air parcels in the atmospheric boundary layer for several sites in central Europe. Secondly we show that it is likely that extensive forest fires on the Iberian Peninsula, resulting from the drought and heat, contributed to the peak ozone values in North Europe in August. Thirdly, regional scale model calculations indicate that biogenic isoprene could have contributed with 20% of the peak ozone concentrations. Measurements indicate elevated concentrations of isoprene compared to previous years. Sensitivity runs with a global chemical transport model showed that a reduction in the surface dry deposition due to drought and the elevated air temperature both could have contributed significantly to the enhanced ozone concentrations. Due to climate change, situations like this may occur at a higher frequency in the future and may gradually overshadow the effect of reduced emissions from anthropogenic sources of VOC and NOx.

Document Type:Article
Title:European surface ozone in the extreme summer 2003
Authors:
AuthorsInstitution or Email of Authors
Solberg, S.NILU, Kjeller, N
Hov, Ø.Norwegian Meteorological Inst., Oslo, N
Søvde, A.Univ. of Oslo, Oslo, N
Isaksen, S.A.Univ. of Oslo, Oslo, N
Coddeville, P.Ecole des Mines de Douai, Douai, F
De Backer, H.Royal Meteorol. Inst. of Belgium, Brussels, B
Forster, C.UNSPECIFIED
Orsolini, O.NILU, Kjeller, N
Uhse, K.Umweltbundesamt, Langen
Date:2008
Journal or Publication Title:Journal of Geophysical Research
Volume:113
DOI:10.1029/2007JD009098
Page Range:pp. 1-16
Status:Published
Keywords:surface ozone, climate change, long-range transport, EMEP network
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Air Traffic and Weather (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Dr. Caroline Forster
Deposited On:26 Nov 2008
Last Modified:12 Dec 2013 20:27

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