GETTY Dr David Evans claims CO2 has only a tenth to a fifth of the impact on temperature rises than calcul

Dr David Evans, a former climate modeller for the Government’s Australian Greenhouse Office, says global warming predictions have been vastly exaggerated in error. The academic, from Perth, Australia, who has passed six degrees in applied mathematics, has analysed complex mathematical assumptions widely used to predict climate change and is predicting world temperature will stagnate until 2017 before cooling, with a 'mini ice age' by 2030. He says fundamental flaws in how future temperatures may rise have been included in the 'standard models' and this has led to inflated mathematical - and therefore temperature - predictions. He said: "There is an intellectual stand-off in climate change. Skeptics point to empirical evidence that disagrees with the climate models.

GETTY Not convinced: Dr David Evans does not envisage scenes like this any time soon

"Yet the climate scientists insist that their calculations showing a high sensitivity to carbon dioxide are correct — because they use well-established physics, such as spectroscopy, radiation physics, and adiabatic lapse rates. He said he "mapped out" the architecture of the climate models used and found, that while the physics was correct, it had been "applied wrongly". He claims to have found two reasons for it being wrongly applied, the first being a vastly over estimated impact on our temperature from CO2. He said: "There is no empirical evidence that rising levels of carbon dioxide will raise the temperature of the Earth’s surface as fast as the UN’s Intergovernmental Panel on Climate Change (IPCC) predicts. "Yes, CO2 has an effect, but it’s about a fifth or tenth of what the IPCC says it is. "CO2 is not driving the climate; it caused less than 20% of the global warming in the last few decades”. He said the other problem was the predictions had no reflection on changes that have actually been recorded and never saw the current 18-year temperature stagnation we are now in.