Thread by @ClimateBen, Greenland:1. Recent melt is exceptional2. Models underestimate rate3. Loss of ice ¼ [...]

Greenland:

1. Recent melt is exceptional
2. Models underestimate rate
3. Loss of ice ¼ trillion tons per year
4. Sea level rise feedback cycle
5. Melt accelerating exponentially
6. Disrupting ocean conveyor belt
7. Ice sheet changes are non-linear
8. Now beyond the tipping point

Giant slabs of ice have been thickening and spreading under the Greenland snow preventing surface meltwater from trickling down and being absorbed. Instead, more water pours off the surface of the ice sheet and into the ocean, speeding up sea level rise. https://insideclimatenews.org/news/18092019/greenland-ice-sheet-melting-sea-level-rise-climate-change-heat-wave-study

With Greenland's Extreme Melting, a New Risk Grows: Ice Slabs That

More meltwater is now pouring off these hardened surfaces and toward the ocean, a new study finds. That will have an impact on sea level rise.

https://insideclimatenews.org/news/18092019/greenland-ice-sheet-melting-sea-level-rise-climate-change-heat-wave-study

Greenland’s recent melt is “exceptional” over the past 350 years and the ice sheet’s response to higher temperatures is now “nonlinear.” https://e360.yale.edu/features/in-greenlands-melting-ice-a-warning-on-hard-climate-choices

In Greenland’s Melting Ice, A Warning on Hard Climate Choices

Greenland is melting at an unprecedented rate, causing vast quantities of ice to disappear and global sea levels to rise. The fate of the ice sheet is not sealed, but unless CO2 emissions are sharply...

https://e360.yale.edu/features/in-greenlands-melting-ice-a-warning-on-hard-climate-choices

1.6C = 7m sea level rise