Pliocene Archives - State of the Planet

Team Deciphers Sea-Level Rise From Last Time Earth’s CO2 Was as High as Today

In a coastal cave off Spain, scientists have found evidence showing that more than 3 million years ago, when temperatures were similar to those projected for the end of this century, sea levels were as much as 16 meters higher than they are now.

by |August 30, 2019
http://paleo.amnh.org/artwork/knight/index.html

Crossing 400ppm: Welcome to the Pliocene

“Right now, we’re living in a world of a Pliocene atmosphere,” scientist Maureen Raymo of the Lamont-Doherty Earth Observatory tells the Yale Forum on Climate Change and the Media. “But the whole rest of the climate system — the oceans are trying to catch-up, the ice sheets are waning, and everything is trying to catch up to this Pliocene atmosphere.”

by |April 22, 2014
Ice core records of CO2 and climate over the past million years, NOAA

400 ppm World, Part 1: Large Changes Still to Come

Why should society care that CO2 is now as high as 400 ppm? The reasons are multiple, but all trace back to the relationship between CO2 and temperature.

by |June 11, 2013