Apologies for cross-posting
Deadline for Abstract Submission with travel grant application: 14 December 2012
Deadline for Abstract Submission: 31 January 2013
DACA-13: Davos Atmosphere and Cryosphere Assembly 2013, Switzerland
8-12 July 2013
Symposium C3 Atmospheric-cryospheric chemistry and ice cores
Numerous examples of active chemical and biological processes in snow and ice have been identified in the last decades demonstrating that ice sheets and snow covers are more than a passive blanket covering vast areas of the Earth either in winter or year-round. This mini-symposium deals with such processes from two perspectives. First, traditional and new proxies in ice cores or firn will be discussed to improve the reconstruction of environmental and climate conditions. Secondly, mechanisms and products impacting the impurity concentrations in snow and ice and the composition of the overlying atmosphere will be considered.
Symposium lead convener
Margit Schwikowski ([hidden email])
Sponsors: IACS, IAMAS
Session C3.1: Ice cores and climate
Lead convener: Margit Schwikowski ([hidden email])
Ice cores from mountain glaciers and polar ice sheets have provided information about past climate and environmental conditions on time scales from decades to hundreds of millennia. They contain a variety of climate proxy indicators which are used to estimate climate variability and climate processes prior to the modern period with great accuracy and good coverage of instrumental meteorological data. Proxies must be calibrated against modern instrumental information to yield a quantitative reconstruction of past climate. Contributions to this session are invited on quantitative reconstructions of past climate from all regions of Earth and at all time scales. Presentations about new ice core proxies, proxy calibration, multi-proxy use or proxy forward modelling approaches are especially welcome.
Session C3.2: Air-ice chemical interaction
Lead convener: Hans-Werner Jacobi ([hidden email])
The cryosphere plays an active role in Earth’s biogeochemical cycles. Physical, chemical, and biological processes in alpine and polar snow and ice have been shown to cause vivid fluxes between atmosphere, cryosphere, soil, and ocean. These fluxes can contribute to the accumulation, production, or modification of certain globally transported contaminants and greenhouse gases. This session focuses on the chemical and biological activity in ice and snow. We invite presentations about field, laboratory, and modelling studies identifying important processes and deepening our understanding of the impact of the multi-phase matrix of ice and snow on chemical and biological processes. Contributions regarding recent advances in the parameterization of such processes in models and the evaluation of the impact on atmospheric composition, climate are especially encouraged.
-- Dr. Margit Schwikowski Paul Scherrer Institut Labor für Radio- und Umweltchemie CH-5232 Villigen PSI Switzerland Phone: +41 56 310 4110 Fax: +41 56 310 4435 E-mail: [hidden email] http://lch.web.psi.ch/analytic/
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