[markkat]

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

Coastal cities are going to move.

[eanzenberg]

This is not representative by current trends nor simulations (which themselves have huge error bars)

[markkat]

Do 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]

https://www.nature.com/articles/s41467-019-12808-z

"Most estimates of global mean sea-level rise this century fall below 2 m."