The result is that temperatures in recent decades exceed the maximum proxy estimate (including uncertainty range) for the past 1,300 years. (skepticalscience.com)
Better simulation of the past two decades, and in due course the upcoming one, would reduce uncertainty ranges and improve the confidence level of our projections of greenhouse gases. (ipcc.ch)
The entire recession of the ice stream will still take centuries, but this is very difficult to model and there are huge uncertainty ranges with many unknown parameters. (antarcticglaciers.org)