The latest climate models predict similar possible global average temperature changes to those models used five or 10 years ago, ranging from 1.6-4.3C (2.9-7.7F) in the current best estimates using a mid-range emissions scenario. We are now more confident about these temperature range predictions.

Using the Hadley Centre models we have even been able to assign probabilities to more dangerous high temperature changes at the upper end of the temperature range if climate turns out to be very sensitive to increased greenhouse gases. We also have more detail about regional changes in climate.

Climate models combined with observations can attribute recent changes in climate on continental scales, and even on the small scale of the Central England Temperature, to human impact on the environment.

Now that man-made climate change is established beyond reasonable doubt - and further climate change is inevitable - it is even more important to improve our climate predictions to provide the best possible information to planners.

In order to do this we will continue to require the best possible science to be developed into climate models which are able to run at the highest possible resolution on some of the most powerful computers on the planet.