9 ms·
Over the last 40M years, when CO2 was at current levels (400ppm), sea level was +9 to +31 meters higher. We need to reduce to 280ppm to start rebuilding ice. h
by markkat 7y ago
Over the last 40M years, when CO2 was at current levels (400ppm), sea level was +9 to +31 meters higher. We need to reduce to 280ppm to start rebuilding ice.
https://www.pnas.org/content/110/4/1209 https://www.pnas.org/content/110/4/1209
Coastal cities are going to move.
- eanzenberg 7y agoThis is not representative by current trends nor simulations (which themselves have huge error bars)
- markkat 7y agoDo you have a citation for current simulations? The +9m to +31m isn't from simulations. It's from ice core sample and sediment analysis.
- eanzenberg 7y agohttps://www.nature.com/articles/s41467-019-12808-z https://www.nature.com/articles/s41467-019-12808-z "Most estimates of global mean sea-level rise this century fall below 2 m."