Session No. G1 Tuesday, June 26, 2001

10:00 AM-3:00 PM, Edinburgh International Conference Centre: Pentland
G1. Feedbacks and Coupling between Geosphere, Biosphere, Hydrosphere, and Atmosphere
Andrew Watson, Presiding
Start Time
10:00 AM HOW CAN WE BUILD BETTER EARTH SYSTEM MODELS?: SHEPHERD, John, Southampton Oceanography Centre, Univ of Southampton, European Way, Southampton SO14 3ZH United Kingdom, j.g.shepherd@soc.soton.ac.uk.
10:30 AM STABLE AND UNSTABLE STATES IN A SYSTEM CONTROLLED BY POSITIVE FEEDBACK, IMPLICATIONS FOR THE TROPICAL RAINFOREST ECOSYSTEM: ALCOCK, J., Environmental Sciences, Penn State Abington College, 1600 Woodland Rd, Abington, PA 19001, jea4@psu.edu.
10:50 AM MILLENNIAL-SCALE CLIMATE VARIABILITY CONTROLLED BY VERTICAL EXCHANGE IN THE OCEAN: SHAFFER, Gary, OLSEN, Steffen Malskær, and BJERRUM, Christian J., Danish Center for Earth System Science, Univ of Copenhagen, Juliane Maries Vej 30, Copenhagen OE, 2100, Denmark, gs@dcess.ku.dk
11:10 AM GLACIAL-INTERGLACIAL PERTURBATIONS IN THE GLOBAL SILICA CYCLE AND IMPLICATIONS FOR VARIABILITY IN ATMOSPHERIC CO2 LEVELS OVER THE LATE QUATERNARY: RIDGWELL, Andy J., School of Environmental Sciences, Univ of East Anglia, Norwich, NR4 7TJ, United Kingdom, A.Ridgwell@uea.ac.uk and WATSON, Andrew, Univ of East Anglia,
11:30 AM Break
11:40 AM FEEDBACKS IN THE RESPONSE OF THE LLN CLIMATE MODEL TO THE ASTRONOMICAL FORCING: BERGER, André L., CRUCIFIX, Michel, and LOUTRE, Marie-France, Institut d'Astronomie et de Géophysique G. Lemaître, Université Catholique de Louvain, 2, Chemin du Cyclotron, Louvain-la-Neuve, 1348, Belgium, berger@astr.ucl.ac.be
12:10 PM CENOZOIC MOUNTAIN UPLIFT FORCING GLOBAL COOLING OR VISE VERSA: A CHICKEN AND EGG PROBLEM REVISITED: KUHLEMANN, Joachim, Geol.-Palaeont. Inst, Univ. Tuebungen, Sigwartstr. 10, Tuebingen D-72076 Germany, kuhlemann@uni-tuebingen.de.
12:30 PM BIOTIC FEEDBACKS DURING THE PHANEROZOIC AND THE FUTURE OF GAIA: LENTON, Timothy M., Centre for Ecology and Hydrology, Edinburgh Research Station, Bush Estate, Penicuik, Midlothian EH26 0QB United Kingdom, tlent@ceh.ac.uk.
12:50 PM DOES LIFE DRIVE DISEQUILIBRIUM IN THE BIOSPHERE?: SCHWARTZMAN, David W., Biology, Howard Univ, Washington, DC 20059, dws@scs.howard.edu and VOLK, Tyler, Biology, New York Univ, 1009 Main Building, New York, NY 10003,
1:10 PM Lunch
1:50 PM MODELING THE LONG-TERM EVOLUTION OF ATMOSPHERIC OXYGEN AND CARBON DIOXIDE: OHMOTO, Hiroshi, Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State Univ, 435 Deike Bldg, University Park, PA 16802, ohmoto@geosc.psu.edu and LASAGA, Antonio C., Geology and Geophysics, Yale Univ, New Haven, CT 06520,
2:10 PM THE DYNAMICS OF THE EARTH'S GLOBAL CARBON CYCLE: A MINIMAL MODEL: VON BLOH, Werner1, SIEGFRIED, Franck1, KOSSACKI, Konrad J.2, and BOUNAMA, Christine1, (1) Potsdam Institute for Climate Impact Rsch, P.O. Box 60 12 03, Potsdam, 14412, Germany, bloh@pik-potsdam.de, (2) Institute of Geophysics of Warsaw Univ, Pasteura 7, Warsaw, 02-093, Poland
2:30 PM FEEDBACKS AND THE LONG TERM CARBON CYCLE: BERNER, Robert Arbuckle, Geology and Geophysics, Yale Univ, Box 208109, New Haven, CT 06520-8109, robert.berner@yale.edu.

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