So when I did the math using your numbers (3.2 mm/yr + 0.084 mm/yr/yr) for the expected case I got 528.16 mm by 2100.

But when I used your +tolerance it blows up. Mainly because of the acceleration component. At first I thought 0.025 was supposed to be 0.0025 but even using 0.0025 I get 1,812.11 mm by 2100.

Using 0.025 mm/yr/yr I get 2,212.72 mm by 2100.

I am not buying the acceleration component and here's why. The rate of change of sea level should be based upon the amount of available ice to melt and temperature. For a given temperature increase I would expect the case with more ice available to melt to produce a greater sea level rise than the case with less ice available to melt for the same given temperature increase. Now I may be looking at this all wrong but that's how my brain is seeing this. So I would be surprised that we would see an accelerating sea level rise at the end of an interglacial cycle without an accelerating temperature rise and as near as I can tell, no one is saying that we have an accelerating temperature component. As that would not make any sense given the logarithmic nature of the radiative forcing equation.

What do you think?

Are you dividing acceleration by 2 in your calculations? ... for of upper bounds of 3.4 mm/yr and 0.109 mm/yr/yr ... f(t) = 0.0545 t^2 + 3.4 t ... or f(80) = 0.0545 (80)^2 + 3.4 (80) = 620 mm = 24.5 inches (or if you prefer about 3 millifurlongs) ...

The margin of error for your 6,000 year sea levels greatly exceeds a few meters ... where we're measuring acceleration in microns/yr/yr ...

Melting ice is a small part of sea level in these days ... what we're seeing is due to thermal expansion ... the paper doesn't address why the level is accelerating, just that it is ... we're not all about sea

*surface* temperatures ... it takes a good long while for the energy to conduct down the water column ... we're +1ºC in the air, and +1ºC on the sea surface ... it might be 100 years before that +1ºC gets down 10,000 feet ... 500 years to get to 20,000 feet ... several thousand years before this +1ºC reaches the lowest points of the sea bed ... that might seem a long time, but that's because you're young ...