Chemical Exchange Between the Atmosphere and Polar Snow

The record of aerosol deposited species in ice cores, and problems of interpretation.- Acidic gases (HCl, HF, HN03, HCOOH, and CH3COOH): a review of ice core data and some preliminary discussions on their air-snow relationships.- The record of gases and reactive species in ice cores, and problems of interpretation.- Atmospheric transport pathways for the Arctic.- Occurrence and trends of pollution in the Arctic troposphere.- One year's continuous aerosol sampling at Summit in central Greenland.- Central Antarctica: Atmospheric chemical composition and atmospheric transport.- Coastal Antarctica: Atmospheric chemical composition and atmospheric transport.- Chemical reactions in the polar troposphere relevant to C, S, and N compounds.- Modeling framework for atmospheric trace gas measurements at the air-snow interface.- Overview of field data on the deposition of aerosol-associated apecies to the surface snow of polar glaciers, particularly recent work in Greenland.- The deposition of particles and gases to ice sheets.- Overview of recent field experiments for the study of the air-snow transfer of H202 and HCHO.- Conceptual framework for interpretation of exchange processes.- Processes at ice surfaces: physical uptake and reaction.- Possible chemical transformations in snow and ice induced by solar (UV photons) and cosmic irradiation (muons).- Metamorphism of polar firn: significance of microstructure in energy, mass and chemical species transfer.- The effects of snow ventilation on chemical concentrations.- Wind-blown snow: sublimation, transport and changes to polar snow.- Turbulent exchange of momentum and scalars in the surface layer over Antarctic snow and ice.- Thermodynamics of the solute layer on the surface of ice.- Gas diffusion in firn.- Location, movement andreactions of impurities in solid ice.- Extended abstracts of selected poster presentations.- Firn properties affecting gas exchange at Summit, Greenland: Ventilation possibilities.- Interactions of gas phase HCl and HN03 with ice.- Climate and atmospheric tracers modelling with GCM, polar applications.- Atmospheric residence times influence on tracer concentrations in remote polar areas.- The behaviour of organic chemicals in snow.- Mass size distributions for atmospheric particulate elements at the Zeppelin background station in Ny Alesund, Spitsbergen.- Air/snow transfer studies at the high-alpine site Jungfraujoch, Switzerland.- On the spatial variability of impurity content and stable isotopie composition in recent Summit snow.- Fluorocarbon tracers of the age of air in Alpine firn.- The peroxide record from the DSS ice core, Law Dome, Antarctica: Preliminary results.- Where are we going? - the ice core-paleoclimate inverse problem.- Working group reports.- A: Aerosol species.- B: Acidic gases.- C: Oxidants.- Conclusions and recommendations to ice core community.- ARW participants.- Author index.