An Upcoming Talk By Roy Spencer “Global Warming As A Response To The Pacific Decadal Oscillation”

On December 15, 2008 Noon-1:30pm there will be an interesting and provocative talk titled “Global Warming as a Response to the Pacific Decadal Oscillation” by Dr. Roy Spencer of the University of Alabama-Huntsville at the Capitol Hill Club 300 First St., S.E., in Washington, D.C. Reservations are required –  RSVP by calling 202/ 296-9655 or email[]

Here is the abstract of the talk

“The Intergovernmental Panel on Climate Change (IPCC) assumes that there are no long-term natural sources of energy imbalances in the Earth’s radiative budget that would cause natural periods of global warming or global cooling.  But recent satellite  evidence suggests that the Pacific Decadal Oscillation (PDO) does indeed change the Earth’s energy balance.  When that PDO-related forcing is put into a simple climate model, along with the 100-year history of the PDO, a global temperature history results which is very similar to that observed, including 75% of the centennial temperature trend. This suggests that the IPCC’s claim of high confidence in global warming being manmade is misplaced.”

The short professional  biography of the speaker follows.

Dr. Roy Spencer is a principal research scientist for University of Alabama in Huntsville. In the past, he has served as Senior Scientist for Climate Studies at NASA’s Marshall Space Flight Center in Huntsville, Alabama, where here he directed research into the development and application of satellite passive microwave remote sensing techniques for measuring global temperature, water vapor, and precipitation.  He currently is the U.S. Science Team Leader for the Advanced Microwave Scanning Radiometer (AMSR-E) on NASA’s Aqua satellite. Dr. Spencer is the recipient of NASA’s Medal for Exceptional Scientific Achievement and the American Meteorological Society’s Special Award for his satellite-based temperature monitoring work. He is the author of numerous scientific articles that have appeared in Science, Nature, Journal of Climate, Monthly Weather Review, Journal of Atmospheric and Oceanic Technology, Journal of Climate and Applied
Meteorology, Remote Sensing Reviews, Advances in Space Research, and Climatic Change. Dr. Spencer received his Ph.D. in Meteorology from the University of Wisconsin in 1981.

Regardless of your perspective on the role of humans within the climate system, this talk promises to introduce new insight into how the climate system operates. That circulation changes alone can alter the global average radiative imbalance is an important new perspective. This means that any forcing that results in circulation changes (natural or due to human effects such as land cover/land use change (see) or aerosols (e.g. see) can result in changes in global warming and cooling. This is yet another science issue that was not properly assessed in the 2007 IPCC report.

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