Have a look at this very well made, graphics filled, article in the Washington Post that explains a lot about the rising ocean, and in particular, how it is likely going to be bad in the the south of the USA.
This section, for example, explains stuff that is very often missed out in the discussion:
First, as ice melts in Greenland or Antarctica, meltwaters spill into the ocean, raising global sea levels everywhere. But, counterintuitively, the coastlines farthest from the ice sheets are hit hardest.
That’s because the ice sheets are gigantic — so gigantic, in fact, that they exert a gravitational pull on the ocean. (The Greenland ice sheet weighs approximately 2.7 quadrillion metric tons, equal to about 450 million Great Pyramids of Giza; the Antarctic ice sheet is 10 times heavier.)
Normally, that enormous weight pulls oceans close to the ice sheets, making sea levels around Greenland and Antarctica higher than they would be otherwise. But as the ice melts, that effect lessens. Sea levels close to the ice sheet fall, and sea levels farther away rise.
Jerry Mitrovica, a professor of earth sciences at Harvard University and one of the leading experts on melting ice sheets and ocean levels, recalls looking at a plot of sea levels near Greenland. “I couldn’t believe it,” he said. “It was just an incredible thing to see around this melting ice sheet that sea level change, at least regionally, is dramatically going down.”
Researchers use satellites to track this effect. Two GRACE Follow-On satellites, launched in 2018 by NASA and the German Research Center for Geosciences, orbit the Earth about 140 miles apart — as they do, subtle changes in Earth’s gravitational pull yank one farther from the other. Those shifts paint a picture of the planet’s gravity, which scientists can use to predict the precise pull of the ice sheets on ocean waters.
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