HR: 0800h
AN: U31A-0001    [Abstracts]
TI: The EPICA challenge - predicting greenhouse gas concentrations over 800,000 years: (2)
AU: Fischer, H
EM: hufischer@awi-bremerhaven.de
AF: Alfred Wegener Institute for Polar and Marine Research, Columbusstrasse, Bremerhaven, 27568 Germany
AU: Chappellaz, J
EM: jerome@glaciog.ujf-grenoble.fr
AF: Laboratoire de Glaciologie et Geophysique de'l Environment, Grenoble, Rue Moliere, 54, Saint Martin d'Heres, 38402 France
AU: Kull, C
EM: christoph.kull@pages.unibe.ch
AF: PAGES International Project Office, Sulgeneckstrasse 38, Bern, 3007 Switzerland
AU: Miller, H
EM: hmiller@awi-bremerhaven.de
AF: Alfred Wegener Institute for Polar and Marine Research, Columbusstrasse, Bremerhaven, 27568 Germany
AU: Stocker, T F
EM: stocker@climate.unibe.ch
AF: Physics Institute University of Bern, Sidlerstrasse 5, Bern, 3012 Switzerland
AU: Watson, A J
EM: a.j.watson@uea.ac.uk
AF: School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ United Kingdom
AU: * Wolff, E W
EM: ewwo@bas.ac.uk
AF: British Antarctic Survey, High Cross Madingley Road, Cambridge, CB3 0ET United Kingdom
AB: The European Project for Ice Coring in Antarctica (EPICA) ice core from Dome C (Antarctica) has provided a new record of climate extending to 800,000 years. The imminent appearance of a dataset of greenhouse gas concentrations covering the same period has presented a unique opportunity for a test of our understanding, particularly of the climate/carbon system. The EPICA challenge (issued in Eos earlier this year) was that modeling groups and others should predict the dataset (of CO$_2$ and/or CH$_4$) before it appears, with the aim of promoting an open discussion of the underlying ideas and assumptions. People were invited to send their ideas to the Past Global Changes (PAGES) Project Office for collation. This poster, and the one that accompanies it, will summarise the responses received, and will try to highlight the underlying assumptions and uncertainties that have led to the suggested profiles. The main focus of this poster (CO$_2$ or CH$_4$) depends on the balance of responses received.
DE: 3344 Paleoclimatology
DE: 1827 Glaciology (1863)
DE: 0325 Evolution of the atmosphere
DE: 0330 Geochemical cycles
SC: Union [U]
MN: 2004 AGU Fall Meeting