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Climate change: European team to drill for 'oldest ice' in Antarctica
An ambitious project to retrieve a continuous record of Earth's atmosphere and climate stretching back 1.5 million years is officially "go".
A European consortium will head to Antarctica in December to begin the process of drilling deep into the continent's eastern ice sheet.
...
"Something happened about 900,000 years ago. The ice age cycles changed from every 40,000 years or so, to every 100,000 years; and we don't know why," Dr Catherine Ritz from the Institute of Environmental Geosciences in Grenoble, France, told BBC News.
"And it's rather important, because if we want to forecast what will happen to the climate in the future, with the increase in greenhouse gases, then we will have to use models, and these models will be calibrated on what happened in the past."
https://www.bbc.co.uk/news/science-environment-47848344
A European consortium will head to Antarctica in December to begin the process of drilling deep into the continent's eastern ice sheet.
...
"Something happened about 900,000 years ago. The ice age cycles changed from every 40,000 years or so, to every 100,000 years; and we don't know why," Dr Catherine Ritz from the Institute of Environmental Geosciences in Grenoble, France, told BBC News.
"And it's rather important, because if we want to forecast what will happen to the climate in the future, with the increase in greenhouse gases, then we will have to use models, and these models will be calibrated on what happened in the past."
https://www.bbc.co.uk/news/science-environment-47848344