May 27, 2009

"Notable Quotes"

"A conservative estimate of the warm bias resulting from measuring the temperature near the ground is around 0.21°C per decade (with the nighttime minimum temperature contributing a large part of this bias). Since land covers about 29% of the Earth’s surface, the warm bias due to just this one effect explains about 30% of the IPCC estimate of global warming. In other words, consideration of this one bias in temperature would reduce the IPCC trend to about 0.14°C per decade; still a warming, but not as large as indicated by the IPCC."


Roger Pielke Sr. Senior Research Scientist, Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado

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