Information - AS3.04 Tropospheric Composition: Variability and Trends
This session focuses on the variability of the tropospheric chemical
composition on seasonal to decadal timescales. In the context of the
changing climate and rising global pollution level it is important to
improve our understanding of the main mechanisms which control long- and
mid-term variability of tropospheric air pollutants and greenhouse
gases. Long-term monitoring data at surface sites, vertical soundings,
and satellite data, and multi-annual model simulations on the global or
regional scale can help to understand the role of anthropogenic and
natural factors in controlling the past and possible future changes of
the tropospheric chemical composition. We invite contributions on new
interpretations of long-term data sets of tropospheric ozone and its
precursors, aerosols and greenhouse gases. Results from new monitoring
networks or model simulations of tropospheric key compounds which may
undergo significant future changes (such as hydrogen, methane, nitrous
oxide) are also appreciated. Especially welcome are contributions which
link different data sets (e.g. satellite and in-situ data) or which use
observational data to evaluate global and regional model simulations.
The session is partly supported by ACCENT T&TP sub-project.
Preliminary List of Solicited Speakers
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