Chris de Freitas
Chris de Freitas is a climate scientist and associate professor in the School of Geology and Environmental Science at the University of Auckland, New Zealand.
He has been president of the Meteorological Society of New Zealand and an editor of Climate Research.
De Freitas has been a frequent critic in discourse surrounding the issue of anthropogenic global warming, concerning the way information is received and interpreted. He has written that carbon dioxide emissions themselves may not necessarily be the source of recent increases in global temperature. In the New Zealand Herald (9 May 2006), he wrote:
"There is evidence of global warming. The climate has warmed about 0.6 °C in the past 100 years, but most of that warming occurred prior to 1940, before the post World War II industrialisation that led to an increase in carbon dioxide emissions. But warming does not confirm that carbon dioxide is causing it. Climate is always warming or cooling. There are natural variability theories of warming."