BG2.15 Surface exchange and distribution of reactive trace gases and aerosols |
Convener: Christof Ammann | Co-Conveners: Christine Braban , Christian Brümmer , Eiko Nemitz , Matthias Sörgel |
The distribution of reactive atmospheric compounds near the surface and exchange with the biosphere is more complex than for inert trace gases due to influences from biological and chemical (homogeneous and heterogeneous) processes, surface interactions, and turbulent transfer within and above the vegetation canopy that all act on similar time scales. Due to these complex interactions as well as due to instrumental and methodological difficulties there exist major uncertainties associated with the description, quantification and modelling the near-surface concentration and surface-atmosphere exchange of reactive trace gases and aerosols.
The session is addressed to experimentalists and modelers working on various spatial scales to understand the near-surface concentration and surface-atmosphere exchange of reactive trace gases and aerosols. It is open to a wide range of studies including the development and application of new measurement devices, methods, and model approaches as well as field observations and process studies. Presentations concerning all types of reactive compounds and (semi-) natural or agricultural ecosystems are welcome. Contributions from recent studies on ammonia measurements are especially encouraged.