What excellent news this is:
Research has shown that the 1.7 million kilometre square ice sheet could melt entirely over several thousand years if temperatures continue to rise unchecked, causing sea level rises of up to seven metres.
Now a study from the Met Office Hadley Centre shows that there could be thresholds in melting which, once crossed, could prevent the ice sheet from re-growing to its former extent even if the carbon dioxide concentrations driving climate change are reduced to pre-industrial levels.
Met Office scientists urged action to cut CO2 emissions now, to prevent the ice melting past the tipping points and causing large sea level rises in the coming centuries.
Climate modelling combined with a 3D simulation of the ice found that if the sheet melted by more than 15 per cent, which could occur within 300 years, it would be locked into further decline from which it could only recover to around 80% of its current size.
No, really, this is very good news indeed. Note the \”several thousand years\” and \”300 years\” in there.
Firstly, this puts the kibosh on those alarmists who keep telling us everything is going to drown next Wednesday lunchtime. Secondly, well, 300 years: one hell of a lot has happened since 1700 and we can pretty much assume that one hell of a lot will happen between now and 2300. And as for \”several thousand years\”, well, that\’s pretty much the length of western civilisation so far. You would really have to be pretty brave to say that the Second or Third dynasties of the Pharoahs should have changed their behaviour because of their effect upon us.
Further, we know from the IPCC\’s own reports that the world in 100 years is going to be between 5 and 10 times richer than it is now. Projecting on from their model (the A1 one) we can also expect that in 300 years it will be some 7,000 times richer (that looks alarming but that is indeed what a 3% annual growth rate does over the timescale if I\’ve used the calculator correctly) and if \”several thousand\”. well, the calculator breaks down but it\’s well over the 6 million times that a millenium would bring.
All of this puts Greenland melting into the category of \”we don\’t care about that\” for if it does indeed happen then it\’s so far in the future that the rich bastards there can deal with it.
Which is good news of course.