;)
There is a fascinating post at No Tricks Zone on sea level rise, focusing particularly in the difference between the (heavily adjusted, short-term) satellite record and the (relatively pristine, long-term) tide-gauge data. The former is over 3mm per year, while the latter is much lower.
Author Dave Burton has been trying to reconcile the two numbers and has drawn a blank:
It is not possible to torture the tide-gauge data into yielding a globally averaged rate of relative sea-level rise anywhere near 3.3 mm/yr.
The upshot is that the satellite record might be as much as double the correct figure, or at least the relevant figure for coastal planning purposes. I wonder what figure is used for assessing the economic impacts of climate change?