A multi-model study of impacts of climate change on surface ozone in Europe
Artikel i vetenskaplig tidskrift, 2012

The impact of climate change on surface ozone over Europe was studied using four offline regional chemistry transport models (CTMs) and one online regional integrated climate-chemistry model (CCM), driven by the same global projection of future climate under the SRES A1B scenario. Anthropogenic emissions of ozone precursors from RCP4.5 for year 2000 were used for simulations of both present and future periods in order to isolate the impact of climate change and to assess the robustness of the results across the different models. The sensitivity of the simulated surface ozone to changes in climate between the periods 20002009 and 2040-2049 differs by a factor of two between the models, but the general pattern of change with an increase in southern Europe is similar across different models. Emissions of isoprene differ substantially between different CTMs ranging from 1.6 to 8.0 Tg yr(-1) for the current climate, partly due to differences in horizontal resolution of meteorological input data. Also the simulated change in total isoprene emissions varies substantially across models explaining part of the different climate response on surface ozone. Ensemble mean changes in summer mean ozone and mean of daily maximum ozone are close to 1 ppb(v) in parts of the land area in southern Europe. Corresponding changes of 95-percentiles of hourly ozone are close to 2 ppb(v) in the same region. In northern Europe ensemble mean for mean and daily maximum show negative changes while there are no negative changes for the higher percentiles indicating that climate impacts on O-3 could be especially important in connection with extreme summer events.

dispersion models

citydelta project

tropospheric ozone

regional climate

transport model

gaseous dry deposition

quality models

organic-compound emissions

air-pollution model

emep msc-w

Författare

J. Langner

SMHI

M. Engardt

SMHI

A. Baklanov

Danmarks Meteorologiske Institut

J. H. Christensen

Aarhus Universitet

M. Gauss

Meteorologisk institutt

C. Geels

Aarhus Universitet

G. B. Hedegaard

Lunds universitet

Aarhus Universitet

R. Nuterman

Danmarks Meteorologiske Institut

David Simpson

Chalmers, Rymd- och geovetenskap, Global miljömätteknik och modellering

J. Soares

Finnish Meteorological Institute

M. Sofiev

Finnish Meteorological Institute

P. Wind

Meteorologisk institutt

Universitetet i Tromsö

Ashraf Zakey

Danmarks Meteorologiske Institut

Atmospheric Chemistry and Physics

1680-7316 (ISSN) 1680-7324 (eISSN)

Vol. 12 21 10423-10440

Ämneskategorier

Meteorologi och atmosfärforskning

Fundament

Grundläggande vetenskaper

DOI

10.5194/acp-12-10423-2012

Mer information

Senast uppdaterat

2018-08-27