Workshop on Chemical Atmosphere-Snow-Sea Ice Interactions:
taking the next big step in the field, lab & modelling
13 -15 October 2014 ; Trinity Hall, Cambridge UK.
Scope & Aims
The air-snow-sea ice system plays an important role in the global cycling of nitrogen, halogens, trace metals or carbon, including greenhouse gases (e.g. CO2 air-sea flux), and therefore influences also climate. Its impact on atmospheric composition is illustrated for example by dramatic ozone and mercury depletion events which occur within or close to the sea ice zone (SIZ) mostly during polar spring and are catalysed by halogens released from SIZ ice, snow or aerosol. Recent field campaigns in the high Arctic (e.g. BROMEX, OASIS) and Antarctic (Weddell sea cruises) highlight the importance of snow on sea ice as a chemical reservoir and reactor, even during polar night. However, many processes, participating chemical species and their interactions are still poorly understood and/or lack any representation in current models. Furthermore, recent lab studies provide a lot of detail on the chemical environment and processes but need to be integrated much better to improve our understanding of a rapidly changing natural environment.

The aim of this three day workshop is to bring together experimental and theoretical scientists who work on the physics, chemistry or biology of the atmosphere-snow-sea ice system in order to discuss research status and challenges, which need to be addressed in the near future. An important objective is to foster new research collaborations and identify opportunities for international collaborative funding proposals. An expected workshop outcome will be a publicly available white paper/conference report outlining research priorities and pathways how to address them.

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