The planet is warming rapidly, resulting in historic drought, deadly floods and unusual melting events in the Arctic. It is also causing steady sea level rise, which scientists say will continue for decades.

A new study from Climate Central, a nonprofit research group, shows that roughly 50 major coastal cities will need to implement "unprecedented" adaptation measures to prevent rising seas from swallowing their most populated areas.

The analysis, in collaboration with researchers at Princeton University and the Potsdam Institute for Climate Impact Research in Germany, resulted in striking visual contrasts between the world as we know it today and our underwater future, if the planet warms to 3 degrees Celsius above pre-industrial levels.

Climate scientists reported in August the world is already around 1.2 degrees Celsius warmer than pre-industrial levels. Temperatures should stay below 1.5 degrees, they say a critical threshold to avoid the most severe impacts of the climate crisis.

But even in the most optimistic scenario, where global greenhouse gas emissions begin to decline today and are slashed to net zero by 2050, global temperature will still peak above the 1.5degree threshhold before falling.

Source:
https://edition.cnn.com/2021/10/12/world/3-degrees-sea-level-rise-climate-central/index.html