An analysis of regional differences in tropospheric ozone over Europe
conference paper
It is a well known fact, based on observations and modelling studies, that there are large spatial gradients over Europe in ozone characteristics. These differences are caused by the differences in strength of the phenomena which determine the ozone concentration at a specific location: the precursor emissions and the resulting chemical production, the meteorological situation and the dry deposition. Ozone measurements show the differences in ozone characteristics, but do not reveal the reasons for the differences.
An analysis has been made making use of results of the Eulerian grid model LOTOS.
With the LOTOS-model, calculations of concentrations of ozone over Europe on grids of 0.5 lat x 1.0 long upto about 3 km have been made for the whole year of 1994 on an hourly basis. The model results are in reasonable agreement with measurements, they do show similar magnitudes and similar 03 gradients (Builtjes 1996, Roemer e.a. 1997).
The ozone results of the LOTOS-model have been analysed for the growing season (April-September) of 1994, first by an assessment of the found regional differences in peak ozone levels, averaged ozone levels, daily amplitude and month in which the monthly averaged value has a maximum.
For selected areas budget studies have been performed, indicating the reasons for the found spatial gradients.
It should be noted that these results, next to increasing our understeanding of ozone formation processes, may also lead to the development of optimal, regionally different, ozone abatement strategies
An analysis has been made making use of results of the Eulerian grid model LOTOS.
With the LOTOS-model, calculations of concentrations of ozone over Europe on grids of 0.5 lat x 1.0 long upto about 3 km have been made for the whole year of 1994 on an hourly basis. The model results are in reasonable agreement with measurements, they do show similar magnitudes and similar 03 gradients (Builtjes 1996, Roemer e.a. 1997).
The ozone results of the LOTOS-model have been analysed for the growing season (April-September) of 1994, first by an assessment of the found regional differences in peak ozone levels, averaged ozone levels, daily amplitude and month in which the monthly averaged value has a maximum.
For selected areas budget studies have been performed, indicating the reasons for the found spatial gradients.
It should be noted that these results, next to increasing our understeanding of ozone formation processes, may also lead to the development of optimal, regionally different, ozone abatement strategies
TNO Identifier
256249
Publisher
TNO
Source title
Air Pollution Modeling and Its Application XII, ed. by Sven-Erik Gryning and Nadine Chaumerliac, Plenum Press, New York, 1998
Pages
583-590
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