More than 2.5m Sea Level Rise by 2040?

[muriel_volestrangler]

1. That looks like an unjustifiable extrapolation

You shouldn't just say "can I fit a rough polynomial to this graph" and then extrapolate that well into the future, without some justification for why that particular polynomial is a good model. Note that the blogger hasn't even bothered to tell us what the polynomial is. It smacks of someone who has found a 'polynomial' function on their spreadsheet, without having the faintest idea of what it means. His polynomial showed sea level rise slowing down between 2000 and 2008. Why? If he cannot give reasons for that, he cannot justify a model which later shows sudden acceleration.