Environmental Engineering Reference
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of the available OH radicals in the atmosphere. The more SO
2
leads to less OH
which in turn affects ozone production cycle (
Fig. 3c).
The smaller ozone con-
centrations in presence of higher SO
2
concentrations indicate a signal of this
interaction.
4. Conclusions
Features that cannot be accurately captured by the conventional meteorological
and air quality models are adequately described with the new model development
(direct coupled system). ICLAMS includes a robust parameterization package of
atmospheric processes and feedbacks between air quality and meteorology. The
application of the above algorithms leads into a more accurate and versatile
modelling tool for air quality and climatic forcing research.
a
b
c
d
Fig. 3.
Differences in concentrations (ppm) of (a) sulfates, (b) SO
2
, and (c) ozone expressed as
[C
aerosol chemistry
-C
only gas chemistry
] and d) cloud cover on 5 August 2008 at 13:00 UTC
Acknowledgments
We would like to thank Dr. A. Nenes for kindly providing the cloud
nucleation routines and Dr. C. J. Tremback for his support during the new code development.
This work was supported by the EU 6th Framework Program CIRCE IP, contract# 036961 and
EUROCONTROL Research Studentship Agreement no CO6/22048ST
