I should have said that the graph was taken from the Copenhagen Sythesis report (2009). This one, from the same source shows the increasing global mean temperature change using 1990 as a base temperature. The dotted lines are based on IPCC predictions from previous reports. As you can see, we're already following some of the more extreme predictions. That is - the same extreme predictions that Bjørn Lomborg said you could safely ignore.
Quote:The Intergovernmental Panel on Climate Change (IPCC) concluded in 2007 that climate change is, without doubt, occurring and that the Earth is warming. More importantly, the IPCC concluded that there is over 90% probability that this global warming is primarily caused by human activities – the most important of these being the emission of greenhouse gases and the clearing of natural vegetation. Since 2007, reports comparing the IPCC projections of 1990 with observations show that some climate indicators are changing near the upper end of the range indicated by the projections or, as in the case of sea level rise (Figure 1), at even greater rates than indicated by IPCC projections........
If anyone wants the link for the Copenhagen synthesis report again, let me know. Of course you may prefer to go out and buy stale veggies instead
Quote:Figure 3
Changes in global average surface air temperature (smoothed over 15 years) (corrected from 11 in the first version og this report) relative to 1990. The blue line represents data from Hadley Center (UK
Meteorological Office); the red line is GISS (NASA Goddard Institute for Space Studies, USA) data. The broken lines are projections from the IPCC Third Assessment Report, with the shading indicating the
uncertainties around the projections3 (data from 2007 and 2008 added by Rahmstorf, S.).
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