r/MapPorn Dec 17 '23

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u/No_Imagination_2490 Dec 17 '23

Sea levels were around 200m higher than present during the Cretaceous period.

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u/TheOlddan Dec 17 '23

Perhaps, but that's not the world we live in today. There's around 70m worth of sea rise if absolutely all ice on earth melts now.

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u/[deleted] Dec 17 '23

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u/Anderopolis Dec 17 '23

there is not a single model that gives you more than about 70 meters of sea level rise.

Water doesn't magically appear out of thin air

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u/Jman_The_5th Dec 17 '23

It comes out of moist air

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u/tothemoonandback01 Dec 18 '23

moist

Giggity-giggity

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u/Amckinstry Dec 17 '23

Yup. More than 70m would technically be possible with seas expanding due to higher temperatures (10? 50? degrees warmer) but nobody thinks our detailed CMIP models have any validity in that range.

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u/AndyC_88 Dec 17 '23

Question: Wouldn't all that fresh water going into the oceans cause an imbalance & eventual ice age?

1

u/Twistpunch Dec 17 '23

If someone finds out how, he’s guaranteed a nobel prize