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Depends on what's meant by 'recent'. https://www.pnas.org/content/118/13/e2021442118 https://www.pnas.org/content/118/13/e2021442118 Abstract: Understanding G

Depends on what's meant by 'recent'. https://www.pnas.org/content/118/13/e2021442118 https://www.pnas.org/content/118/13/e2021442118 Abstract: Understanding Greenland Ice Sheet history is critical for predicting its response to future climate warming and contribution to sea-level rise. We analyzed sediment at the bottom of the Camp Century ice core, collected 120 km from the coast in northwestern Greenland. The sediment, frozen under nearly 1.4 km of ice, contains well-preserved fossil plants and biomolecules sourced from at least two ice-free warm periods in the past few million years. Enriched stable isotopes in pore ice indicate precipitation at lower elevations than present, implying ice-sheet absence. The similarity of cosmogenic isotope ratios in the upper-most sediment to those measured in bedrock near the center of Greenland suggests that the ice sheet melted and re-formed at least once during the past million years.

jfengel 6y ago
He meant "recent" in the sense of "a few hundred years ago". He claimed that the island was called "Green" because he believed that's what early explorers saw. Which is factually wrong. Not that it matters to him. "I absolutely do not believe that the science of man-caused climate change is proven, not by any stretch of the imagination. I think it's far more likely that it's just sunspot activity or something just in the geologic eons of time where we have changes in the climate." In other words, he knows what he wants to believe, and assumes there's something scientificky sounding that will back him up.
pmayrgundter 6y ago
About 120kya Northwest Greenland was 8C warmer than today and lost about 400km (about 20%) of its thickness. "In a 2013 study published in Nature, 133 researchers analyzed a Greenland ice core from the Eemian interglacial. They concluded that during this geological period, roughly 130,000–115,000 years ago, the GIS (Greenland Ice Sheet) was 8 degrees C warmer than today. This resulted in a thickness decrease of the northwest Greenland ice sheet by 400 ± 250 metres, reaching surface elevations 122,000 years ago of 130 ± 300 metres lower than at present." https://en.wikipedia.org/wiki/Greenland_ice_sheet#Observation_and_research_since_2010 https://en.wikipedia.org/wiki/Greenland_ice_sheet#Observatio...

jfengel 6y ago

He meant "recent" in the sense of "a few hundred years ago". He claimed that the island was called "Green" because he believed that's what early explorers saw. Which is factually wrong. Not that it matters to him. "I absolutely do not believe that the science of man-caused climate change is proven, not by any stretch of the imagination. I think it's far more likely that it's just sunspot activity or something just in the geologic eons of time where we have changes in the climate." In other words, he knows what he wants to believe, and assumes there's something scientificky sounding that will back him up.

pmayrgundter 6y ago

About 120kya Northwest Greenland was 8C warmer than today and lost about 400km (about 20%) of its thickness. "In a 2013 study published in Nature, 133 researchers analyzed a Greenland ice core from the Eemian interglacial. They concluded that during this geological period, roughly 130,000–115,000 years ago, the GIS (Greenland Ice Sheet) was 8 degrees C warmer than today. This resulted in a thickness decrease of the northwest Greenland ice sheet by 400 ± 250 metres, reaching surface elevations 122,000 years ago of 130 ± 300 metres lower than at present." https://en.wikipedia.org/wiki/Greenland_ice_sheet#Observation_and_research_since_2010 https://en.wikipedia.org/wiki/Greenland_ice_sheet#Observatio...