Are decadal anthropogenic emission reductions in Europe consistent with surface ozone observations?

Details Are decadal anthropogenic emission reductions in Europe consistent with surface ozone observations? Are decadal anthropogenic emission reductions in Europe consistent with surface ozone observations?

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3313810v&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 13, CiteID L13810

Physics

17

Atmospheric Composition And Structure: Constituent Sources And Sinks, Atmospheric Composition And Structure: Middle Atmosphere: Composition And Chemistry, Atmospheric Composition And Structure: Middle Atmosphere: Constituent Transport And Chemistry (3334), Atmospheric Composition And Structure: Pollution: Urban And Regional (0305, 0478, 4251), Atmospheric Composition And Structure: Troposphere: Composition And Chemistry

Scientific paper

The consistency between pollutant emission reductions in Europe during the 1990-2002 period and ozone observations is quantitatively verified by 13-year long simulations over the whole period using the regional chemistry-transport model and the EMEP emission inventory. A statistically significant decadal tendency of 0.65 ppb/year is found in the difference between simulated and observed summer 90th percentiles of ozone daily maxima when model emissions are kept constant from year to year. By contrast the use of yearly dependent emissions does not yield a statistically significant percentile difference tendency. The regional structure of the 90th percentile differences shows that emissions may have decreased with a higher rate than assumed in the U.K. and at a lower rate in central Europe. The observed 10th percentiles are also compatible with the assumed emission reductions in Europe during 1990-2002, but are of lesser agreement with simulations using a uniform trend in the baseline ozone.

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