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OKIsItJustMe

(19,938 posts)
Tue Apr 9, 2019, 03:25 PM Apr 2019

Retrieving Climate History from the Ice (... essential climate data from the past 1.5 million years ...)

https://www.awi.de/en/about-us/service/press/press-release/retrieving-climate-history-from-the-ice.html
Retrieving Climate History from the Ice
In the Antarctic, European researchers plan to analyse essential climate data from the past 1.5 million years.

(09. April 2019)

In the context of a major European Union project, experts from 14 institutions in ten European countries have spent three years combing the Antarctic ice, looking for the ideal site to investigate the climate history of the past 1.5 million years. Today, the consortium Beyond EPICA – Oldest Ice (BE-OI), led by Olaf Eisen from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) in Bremerhaven, presented its findings at the General Assembly of the European Geosciences Union in Vienna.



https://www.unibe.ch/news/media_news/media_relations_e/media_releases/2019/medienmitteilungen_2019/the_oldest_ice_on_earth_may_be_able_to_solve_the_puzzle_of_the_planets_climate_history/index_eng.html
The oldest ice on Earth may be able to solve the puzzle of the planet’s climate history

A European research consortium, in which the University of Bern is involved in, wants to drill a 1.5 million year old ice core in Antarctica. An analysis of the climate data stored in the ice should contribute to a better understanding of the alternation between warm and cold periods.

As part of the EU project "Beyond EPICA – Oldest Ice", experts from 14 institutions located in 10 European countries have spent three years combing the Antarctic ice sheet to find the ideal location to retrieve the oldest ice core on the Earth. The location has now been found and the consortium presented their choice today at the annual conference of the European Geoscience Union (EGU) in Vienna.

The research team selected one of the most barren and lifeless places on Earth: "Little Dome C" is located around 30 kilometers – or a couple of hours by snowmobile – away from the Concordia Research Station, which is jointly run by France and Italy. The station is 3233 meters above sea level, it experiences extremely little precipitation and the average annual temperature is a chilly –54.5 °C?. The temperature never rises above –25 °C? and can drop to –80 °C? in winter.

Previous world record at the University of Bern

The Concordia Station has played an important role with regards to climate research in the past. As part of the EPICA (European Project for Ice Coring in Antarctica) project, between 1996 and 2004 researchers drilled to a depth of 3270 meters into the Antarctic ice at this site. Using a detailed analysis of these ice cores, the University of Bern was able to reconstruct the CO2 concentration in the atmosphere over the past 800,000 years – a world record. "This time interval is characterized by ice ages that were interrupted by relatively short warm periods, like the one that we are currently experiencing, every 100,000 years or so", explains Hubertus Fischer from the Oeschger Center at the University of Bern. "The CO2 concentrations also changed at the same time: low values in ice ages, high values in warm periods." Fischer is a professor for experimental climate research and the leader of the Swiss Team taking part in Beyond EPICA – Oldest Ice.

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