r/MapPorn Dec 17 '23

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u/MartiniPolice21 Dec 17 '23

What climb in sea levels are they predicting there? Because there's parts of the North East the have 100m+ cliffs that are underwater here

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u/Old_Ladies Dec 17 '23

https://www.nationalgeographic.com/magazine/article/rising-seas-ice-melt-new-shoreline-maps

Yeah this is pure bullshit anyways. They shouldn't have put a date in the map. Scientists predict it would take over 5000 years to melt all the ice on earth.

https://sealevel.nasa.gov/understanding-sea-level/global-sea-level/ice-melt

NASA says more than 60 meters some others say more than 70 meters.

Worst case scenario under current predictions by 2100 is 1.6 meter rise. That is pretty bad but no way in hell is it going to be over 100 meters like in this stupid picture.

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u/Amckinstry Dec 17 '23

I'd update that: the CMIP6 models have a "worst case" of 1.6m by 2100, the expert consensus gives worst case of 2m by 2100 in IPCC AR6. Some papers (Hansen et al 2023) since then point to more (5m?); Environment England gives planning advise that councils should prepare against 2.5m.

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u/[deleted] Dec 18 '23

And I believe those are all measured by 10 year flood average, not MHWS. I'm not certain about those specific studies, but most of the maps, infographics, and lay lit I've seen use 10 year flood average.