http://www.antarctica.ac.uk/News_and_Information/news_stories/story.php?id=50Many viewers of the recent Channel 4 programme “The Great Global Warming Swindle” have been left confused as to whether or not humans are affecting the climate system. The programme claimed to demonstrate that climatic change is driven by solar influences and that the recent warming is not related to human greenhouse gas emissions. The programme also accused the science community of falsification of results and of a conspiracy of lying – or a “swindle” - about the cause and significance of climate change.
Here we shall clarify three key points:
The evidence for an unusual recent global warming is unequivocal, and it is very likely that this is due to human activity
Recent changes in solar activity bear no resemblance to temperature changes.
Channel 4 used seriously flawed data on which to base their programme.
"Erroneous ‘data’ used by Channel 4
Much of the programme was based around a diagram, shown several times, that purported to be world temperature for the last 120 years. This showed a curve, labelled “NASA”, extending to the year 2003. The curve was produced by NASA nearly twenty years ago. Although it showed data only until 1987, it had been stretched and relabelled to suggest it showed the temperature record to 2003. The resulting distortion excludes the significant warming that has occurred since 1987. Other figures similarly misrepresented the current state of knowledge, especially as regards the influence of the Sun on climate, and the strength of the recent climate warming. This was illustrated an article “The Real Global Warming Swindle” by Steve Connor published in the Independent
(
http://news.independent.co.uk/environment/climate_change/article2355956.ece ).
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