[jackcarter]

Ah, that’s interesting and believable. Do you know where you heard that?

I found this article, which talks about a slightly different effect: If Antarctic ice melts more quickly than arctic ice, then the Antarctic land rebound will shove southern-hemisphere water north, raising sea levels in the northern hemisphere. The opposite effect happens if arctic ice melts before Antarctic ice.

https://www.theguardian.com/commentisfree/2018/oct/01/cities...

[wcoenen]

The article doesn't even mention the effect of gravity, which is also significant. Ocean water is currently gravitationally attracted to the ice caps, and when an ice cap disappears, all that "bunched up" water will spread around the globe. This effect reduces sea level rise in a large area around the ice cap, and increases it everywhere else.

This other article in The Guardian does mention it: https://www.theguardian.com/environment/ng-interactive/2018/...

[koops]

Here the Woods Hole oceanographers talk about it without the couch analogy:

https://www.whoi.edu/news-release/why-is-sea-level-rising-hi...