by K. Richard, July 22, 2024 in NoTricksZone

There were millennia during the past glacial (when CO2 levels were under 200 ppm) that were as warm or warmer than today.

Four central Europe reconstructions, using collected evidence from disparate biomarkers, indicate there were periods (for example, 54,000 to 51,000 years ago, the Bølling–Allerød interstadial, 14,700 years ago) during the last glacial when temperatures were as warmer than (or similar to) today (Zander et al., 2024).

Temperatures throughout the Holocene (8,000 to 4,000 years ago), when CO2 hovered around 265 ppm, were 3.5°C (and up to 5°C) warmer than today. Modern temperatures are among the coldest of the last 10,000 years.

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