Processes of Chemical Exchange between the Atmosphere and Polar Snow

A NATO Advanced Research Workshop with the above title was held at Il Ciocco, Italy, on March 18th-24th, 1995. The meeting was funded by NATO's Global Environmental Change Programme, and supported by the ICSI Snow Atmosphere Chemical Exchange Working Group, and by the IGAC Polar Atmospheric and Snow Chemistry group (part of IGBP).

The proceedings of this meeting have now been published in NATO ASI Series as volume I43 by Springer-Verlag. The editors are Eric Wolff and Roger Bales. Publication date is 1996, ISBN number 3-540-61280-7. The book has 675 pages. Ordering information is available from Springer's online catalogue. The book consists of the invited full papers listed below, 3 Working Group reports (also shown below), and 11 extended abstracts of posters that were presented at the meeting. The final title of the volume was "Chemical Exchange between the Atmosphere and Polar Snow".

An article by Roger Bales and Eric Wolff, summarising the topic, including conclusions of the meeting, was recently published in the AGU journal EOS, 76, 477-483 (November 21, 1995). This page last updated October 31st, 1996. No further updates are envisaged.

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Papers in proceedings volume

The record of aerosol deposited species in ice cores, and problems of interpretation. Eric Wolff (BAS, Cambridge, UK)

Acidic gases (HCl, HF, HNO3, HCOOH, and CH3COOH): a review of ice core data and some preliminary discussions on their air-snow relationships. Michel Legrand, Anne Leopold and Florent Domine (Grenoble)

The record of gases and reactive species in ice cores, and problems of interpretation. Albrecht Neftel (Bern).

Atmospheric transport pathways for the Arctic. Trond Iversen (Oslo).

Occurrence and trends of pollution in the Arctic troposphere. Len Barrie (AES, Canada)

One year's continuous aerosol sampling at Summit in central Greenland. Peter Wahlin (NERI, Copenhagen)

Central Antarctica: Atmospheric chemical composition and atmospheric transport. Barry Bodhaine (NOAA, Boulder)

Coastal Antarctica: Atmospheric chemical composition and atmospheric transport. Dietmar Wagenbach (Heidelberg).

Chemical reactions in the polar troposphere relevant to C, S, and N compounds. Jan Bottenheim and Len Barrie (AES, Canada)

Modeling framework for atmospheric trace gas measurements at the air-snow interface. Anne Thompson (NASA/Goddard)

Overview of field data on the deposition of aerosol-associated species to the surface snow of polar glaciers, particularly recent work in Greenland. Jack Dibb (New Hampshire)

The deposition of particles and gases to ice sheets. Cliff Davidson, Michael Bergin and Hampden Kuhns (CMU, Pittsburgh)

Overview of recent field experiments for the study of the air-snow transfer of H2O2 and HCHO. Katrin Fuhrer, Manuel Hutterli (Bern) and Joe McConnell (Arizona)

Conceptual framework for interpretation of exchange processes. Roger Bales and Jungyill Choi (Arizona).

Processes at ice surfaces: Physical uptake and reaction. A. (Ravi) Ravishankara (NOAA, Boulder).

Possible chemical transformations in snow and ice induced by solar (UV photons) and cosmic irradiation (muons). Michael Hoffmann (Caltech).

Metamorphism of polar firn: significance of microstructure in energy, mass and chemical species transfer. Bert Davis, Ted Arons and Mary Albert (CRREL, Hanover, NH).

The effects of snow ventilation on chemical concentrations. Ed Waddington, John Cunningham and Susan Harder (Seattle).

Wind-blown snow: sublimation, transport and changes to polar snow. John Pomeroy (Saskatoon) and Gerry Jones (Quebec).

Turbulent exchange of momentum and scalars in the surface layer over Antarctic snow and ice. Richard Bintanja and Michiel van den Broeke (Utrecht).

Thermodynamics on ice surfaces. Peter Brimblecombe (UEA, Norwich) and Martha Conklin (Arizona)

Gas diffusion in firn. Jakob Schwander (Bern).

Location, movement and reactions of impurities in solid ice. Eric Wolff (BAS, Cambridge, UK).

Extended abstracts of poster presentations

Firn properties affecting gas exchange at Summit, Greenland: Recent results on near-surface ventilation possibilities. M R Albert, E M Arons, R E Davis

Interactions of gas phase HCL and HNO3 with ice. F Domine, E Thibert, L Chaix

Climate and atmospheric tracers modelling with GCM, polar applications. C Genthon, A Armengaud, G Krinner

Atmospheric residence times influence on tracer concentrations in remote polar areas. M Hansson

The behaviour of organic chemicals in snow. D Mackay, C Jia, J Hoff, D Gregor, F Wania

Mass size distributions for atmospheric particulate elements at the Zeppelin background station in Ny Alesund, Spitsbergen. W Maenhaut, V Havranek, G Ducastel, J E Hanssen

Air/snow transfer studies at the high-alpine site Jungfraujoch, Switzerland. M Schwikowski, U Baltensperger, H G„ggeler

Fluorocarbon tracers of the age of air in Alpine firn. W T Sturges, S A Penkett, J-M Barnola, J A Chappellaz

The peroxide record from the DSS ice core, Law Dome, Antarctica: Preliminary results. T van Ommen, V Morgan

On the spatial variability of impurity content and stable isotopic composition in recent Summit snow. J P Steffensen, H B Clausen, J M Christensen

Where are we going? - the ice core-paleoclimate inverse problem. E D Waddington

Working groups: 3 groups split according to species. Each group discussed what is known about the transfer function, and what studies are needed to improve this knowledge.

A: Aerosol species (eg Ca)

Chair: Robert Delmas, Rapporteur: Cliff Davidson

B: Acidic gases (eg HNO3)

Chair: Michel Legrand, Rapporteur: Len Barrie

C: Oxidant gases (H2O2/HCHO)

Chair: Albrecht Neftel, Rapporteur: Martha Conklin

Conclusions and recommendations to ice core community.