Ice that's already in oceans doesn't contribute to sea level rise. Ice that's currently on land that then melts into or moves into an ocean DOES contribute to sea level rise. Gradually, as it melts into, or quickly, when a mass of land ice slides in. This is important, because

"The mass of ice bottled up on the Antarctic Peninsula, were it to slide into the sea, would raise the global sea level about 10 inches, roughly equivalent to the cumulative sea level change observed in the 20th century." - Henry Pollack, A World Without Ice #ocbookofthemonth

Except, most sea level rise during the 20th century is from water being warmer and therefore taking up more space (thermal expansion), plus some meltwater from land ice. But we have a big problem.....

"The amount of ice on each of the Greenland and West Antarctic landmasses is equivalent to about 20 feet of sea level change, and that on East Antarctica, about 200 feet." - Henry Pollack, A World Without Ice #ocbookofthemonth #climatechange #sealevelrise #ice

Luckily, for now, East Antarctica's ice is relatively stable, at high elevation and far inland.

But Greenland and West Antarctica are an impending disastrous situation....

"Just prior to the beginning of the most recent glaciation, about 120,000 years ago, Greenland had only about half its present ice cover, and sea level stood some 10 to 15 feet higher than today." - Henry Pollack, A World Without Ice #ocbookofthemonth

Basically we're looking at potentially / probably something like this in the coming future... Last words from the #ocbookofthemonth

"The overarching lesson of the Pliocene is sobering: an ice free Northern Hemisphere, with no sea ice covering the Arctic Ocean and no ice sheet on Greenland, is a possible condition of the modern climate system." - Henry Pollack, A World Without Ice #climatechange

Link to the book club, if anyone wants to join! 1 book/mo on climate, wildlife, conservation, and more! #ocbookofthemonth

Above quotes are from the Dec book, A World Without Ice by Henry Pollack.

The Jan 2021 book is Bayou Farewell by Mike Tidwell https://www.goodreads.com/group/show/741391-outdoor-conservation-book-club