Hundreds of toxic sites in California threatened by sea level rise due to climate change

[progree]

3. The 2021 IPCC Report on sea level rise by 2100 (1.2 feet with near metaphysical certainty)

Last edited Wed Dec 1, 2021, 08:15 PM - Edit history (1)

5 Big Findings from the IPCC’s 2021 Climate Report, World Resources Institute, 8/9/21
https://www.wri.org/insights/ipcc-climate-report
Graphic: Sea level rise by 2100:

Low emissions Scenario (SSP1-1.9): 0.38 m (1.2 feet),
High emissions scenario (SSP5-8.5): 0.77m (2.5 feet)

What Five Graphs from the U.N. Climate Report Reveal About Our Path to Halting Climate Change, EOS Science News by AGU, 12/1/21
https://eos.org/articles/what-five-graphs-from-the-u-n-climate-report-reveal-about-our-path-to-halting-climate-change

The two shared socioeconomic pathways (SSP1) that stay below 2°C (very low emissions and low emissions) require net zero emissions by mid- to late century and carbon removal. There are five scenarios:

very low emissions (SSP1-1.9),
low emissions (SSP1-2.6),
midlevel emissions (SSP2-4.5),
high emissions (SSP3-7.0), and
very high emissions (SSP5-8.5).

The very low emissions scenario meets the 1.5°C Paris Agreement goal with likely warming of 1.4°C by 2100—but it overshoots the target to just above 1.5°C midcentury before decreasing to 1.4°C.

The low emissions scenario reaches 1.8°C by 2100, just skirting under the high bounds of the Paris Agreement.

Midlevel emissions hit 2.7°C,

high emissions clock in at 3.6°C, and

very high emissions extend to 4.4°C in 2100.