Tracking 30 Years of Sea Level Rise

earthobservatory.nasa.gov

3 pointssohkamyung4 comments

I've always wondered, if all the ice melts, how much further up will the water go, or what is the maximum. iirc, it has gone up around 500 feet since the last ice age started receding, with most of that near the early stages.

The max is 60-70 meters if everything including Antarctica melts. A full melt of Antarctica is not, as far as I know, a prediction being made by any model in the next thousand years.

3.4 mm per year over the last thirty years. 1.1 feet per century.

Meanwhile, the tide around here goes up and down five feet twice every day.

Yes with a but: the article says over the last 140 years the rise was 21-24cm, and the last 40 years saw a rise of 10cm. That strongly implies an acceleration of sea level rise that is more than any measurement error could account for.

I dislike climate models for my own personal reasons... but they do predict continued acceleration. For example, in 2019 the IPCC predicted that by 2100 (80 years) the level would rise an additional 0.6-1.0 meters.

So the prediction is accelerated rise, and is backed up by observed recent acceleration.

A 3' increase in max high tides would probably cause some issues.

Reply on news.ycombinator.com