Scientific
goals
The
overall objective of the project is to quantify accurately the budget of ozone
precursors using a combination of observations and state of the art CTM. The
retrieval methods to derive accurately the tropospheric burdens of CO, CH4,
NO2 and ozone from observations provided by the IMG/ADEOS and GOME
instruments will be improved. High resolution inventories of emissions for ozone
precursors will be developed. The ability of several European CTMs to reproduce
current distributions will be assessed, through detailed comparisons between
model results and observations. The impact of changes in ozone precursors on the
tropospheric oxidising capacity and on the distribution of ozone will be
quantified. The relative importance of anthropogenic versus natural emissions in
the ozone production will be quantified. The inverse modelling approach for
quantifying surface emissions will be further developed. These developments will
yield an assessment of the accuracy of current inventories. The impact of
emission mitigation policies on the distributions of methane and ozone will be
quantified.
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