On August 30, 2008 the National Post published an article by David Evans (see copy here: No evidence to support that carbon emissions cause significant global warming). David Evans is an Australian Scientist who worked on carbon emission modeling and believed for years that carbon emissions caused global warming. He has now changed his mind based on the evidence – particularly since 2001. He is concerned that politicians and the media have not understood this and is trying to help.
To quote some of his points:
- Satellite measurements do not show any evidence of global warming – in fact since 2001 there is evidence of some cooling
- Satellite measurements plus radiosondes (weather balloons) show no evidence of greenhouse warming
- Evidence that used ice cores to show that global warming in earlier centuries was associated with more carbon dioxide in the air have the carbon occuring after the warming not before – so it’s an effect not a cause.
- Computer models and theoretical calculations are not evidence, they are just theory.
- When the public find out that all the above points were known in 2008, might they feel deceived, furious at the futility of the economic sacrifices? Who is going to be held responsible? Perhaps the political class, for not having the wit to examine the evidence? Maybe the press, for not have not done even the most elementary job of informing a debate and asking questions? If any of the [above is] news to you, then no, your press has not been keeping you well informed. (This item omitted from Post article).
In another paper, David suggest that perhaps the Global temperature can be affected by the sun’s cosmic rays which affects low-level clouds which in turn affects surface temperature. But being a theory too, this has not yet been proved either.
So although preserving the planet’s resources, conserving energy and minimizing waste are all good things, let’s not get them confused with global warming. There is no evidence yet that carbon emissions cause measurable global warming. None.