Neal Rauhauser: Visualizing 400ppm Carbon Dioxide = 20 to 30 Meter Rise in Sea Level?

03 Environmental Degradation
Neal Rauhauser
Neal Rauhauser

Visualizing 400ppm Carbon Dioxide

If we don’t do it this year we will surely reach 400ppm of atmospheric carbon dioxide by 2014. The last 650,000 years this number has been between 180ppm and 280ppm. The world hasn’t had 400ppm since the Pliocene.

Here are maps of Florida, Delaware, and California with toady’s shoreline, 20 meter rise maps, and 30 meter rise maps. Geological records from the Pliocene indicate seas were 25 meters higher than today. I use the sea level map tool to produce this.

Florida is gone south of Orlando with 20m, south of Gainesville if its closer to 30m.

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