Analysis of the ancient ice is expected to show how Earth’s atmosphere and climate have evolved. That should provide insight into how Ice Age cycles have changed, and may help in understanding how atmospheric carbon changed climate, they said.
The same team previously drilled a core about 800,000 years old. The latest drilling went 2.8 kilometers (about 1.7 miles) deep, with a team of 16 scientists and support personnel drilling each summer over four years in average temperatures of about minus-35 Celsius (minus-25.6 Fahrenheit).
Italian researcher Federico Scoto was among the glaciologists and technicians who completed the drilling at the beginning of January at a location called Little Dome C, near Concordia Research Station.
Both Barbante and Scoto said that thanks to the analysis of the ice core of the previous Epica campaign they have assessed that concentrations of greenhouse gases, such as carbon dioxide and methane, even during the warmest periods of the last 800,000 years, have never exceeded the levels seen since the Industrial Revolution began.
The European Union funded Beyond EPICA (European Project for Ice Coring in Antarctica) with support from nations across the continent. Italy is coordinating the project.
The announcement was exciting to Richard Alley, a climate scientist at Penn State who was not involved with the project and who was recently awarded the National Medal of Science for his career studying ice sheets.
Alley said advancements in studying ice cores are important because they help scientists better understand the climate conditions of the past and inform their understanding of humans’ contributions to climate change in the present. He added that reaching the bedrock holds added promise because scientists may learn more about Earth’s history not directly related to the ice record itself.
Source: https://apnews.com
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