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**pdk42** · 22 July 2019, 05:32 PM

Re: Climate Change - Latest

Originally posted by pdk42 View Post

I suspect that the overall distribution of water won't change in any significant way. The water at the poles might be frozen, but it's still water and has a similar density.

Seems it's a nuanced answer:

Climate Change - NASA Science

https://climate.nasa.gov/faq/30/if-all-of-earths-ice-melts-and-flows-into-the-ocean-what-would-happen-to-the-planets-rotation/

NASA is a global leader in studying Earth’s changing climate.

Depends on whether you're talking about ice on land (e.g. Greenland) or just frozen water at the pole (Arctic sea ice).

if the Greenland ice sheet were to completely melt and the meltwater were to completely flow into the oceans, then global sea level would rise by about seven meters (23 feet) and the Earth would rotate more slowly, with the length of the day becoming longer than it is today, by about two milliseconds.

Melting sea ice, such as the Arctic ice cap, does not change sea level because the ice displaces its volume and, hence, does not change the Earth’s rotation.

**pdk42** · 22 July 2019, 07:46 PM

Re: Climate Change - Latest

I'll just also point out that a good proportion of forecast sea level rise is not due to ice melting, but the oceans becoming warmer and hence the water expanding.