European ice core project EPICA receives the European Union Descartes Prize

To this end two deep ice core had to be drilled through the 3000 meters thick East Antarctic Ice Sheet over several years in remote regions far from any coastal research stations. Drilling operations took place under extreme climatic conditions at Dome C at 75°06'S, 123°24'E with a mean annual temperature of minus 54.5 °C. The second drilling was carried out by the Alfred Wegener Institute in Dronning Maud Land at 75°00'S, 0°01'E and a mean annual temperature of minus 44.6°C. After retrieval, the ice cores were shipped in frozen state to Bremerhaven, where they were cut and analyzed in the various European laboratories.

Based on the EPICA ice cores it was possible to measure temperature and precipitation rates, atmospheric aerosol composition, solar activity, the flux of extraterrestrial dust onto the Earth as well as atmospheric greenhouse gas concentrations of the past. The results show, that the concentrations of the greenhouse gases carbon dioxide, methane and nitrous oxide have never been as high over the last 650,000 years as today, when human activities artificially emit those gases into the atmosphere. The carbon dioxide level in the past is tightly coupled to temperature changes in the Antarctic, respectively the Southern Ocean. Among others, warm periods prior to 450,000 years before present exhibited lower temperatures and greenhouse gas concentrations than our current warm period, the Holocene. Also the temperatures during the last ice age show this connection, where slower climate changes in the Antarctic are tightly coupled with rapid climate shifts in the North Atlantic region. This connection is caused by the oceanic heat transport between the North and South Atlantic.

EPICA is one of the core projects within the Research programme „Marine, Coastal and Polar Systems“ of the Alfred Wegener Institute in the research field “Earth and Environment“ of the Helmholtz Association.

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Notes for editors:

Your contact persons at the Alfred Wegener Institute are Dr. Hubertus Fischer (phone: +49/471/4831-1174; email: ) and Prof. Heinrich Miller (phone: +49/471/4831-1210; email: ). Your contact person in the public relations department is Dr. Ude Cieluch (phone: +49/471/4831-2008; email: ).

The Alfred Wegener Institute carries out research in the Arctic and Antarctic as well as in the high and mid latitude oceans. The institute coordinates German polar research and makes available to international science important infrastructure, e.g. the research ice breaker “Polarstern” and research stations in the Arctic and Antarctic. AWI is one of 15 research centres within the Helmholtz-Association, Germany’s largest scientific organization.