Ian Clark (geologist)
Ian D. Clark is a professor in the Department of Earth Sciences at the University of Ottawa (Canada), who has been writing about geoscience and geochemistry since at least 1982. His graduate work in isotope hydrogeology was at the University of Waterloo and the University of Paris. Clark has written numerous articles for the Canadian Journal of Earth Sciences, for over 25 years, but has no peer-reviewed publications on anthropogenic climate change.
In the 2007 UK television documentary "The Great Global Warming Swindle", he states that changes in global temperature correlate with solar activity, saying "Solar activity of the last hundred years, over the last several hundred years correlates very nicely on a decadal basis, with sea ice and Arctic temperatures." Data in the graph Clark defends were modified from the original publication, leading to suggestions among practicing climate scientists that these data were falsified to improve the apparent correlation between solar activity and temperature.
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