[Loclphys] Colloquium (2/11/2010) Please note unusual date

[Malin, Delicia M.]

Old Dominion University
Department of Physics

Fall Colloquium Series

Thursday February 11, 2010

"Celestial origins of the climate oscillations, a review"

Dr. Nicola Scafetta
Duke University



The climate of the Earth has always changed. Herein I will focus on those mechanisms that link climate changes to astronomical phenomena. I will discuss: 1) how changing galactic environment of the solar system as it crosses the spiral arms of the Milky Way may explain the warm and ice periods of the Phanerozoic during the last 600 million years; 2) how the Milankovic's variations in eccentricity, axial tilt, and precession of the Earth's orbit resulted in about 100,000-year ice age cycles during the Quaternary glaciation over the last few million years; 3) how solar variation (plus volcano eruptions) have contributed to the pre-industrial climate change from 1000 to 1900; 4) how solar and orbital changes (plus volcano eruptions and anthropogenic emission) have contributed to climate change during the last century. Although the anthropogenic emissions have contributed to the global warming observed during the last century, I will show that the Anthropogenic Global Warming Theory (AGWT), which claims that more than 90% of the observed warming since 1900 and practically 100% of the observed warming since 1970 is man-induced, must be severely revised. I will present empirical evidences that the last century was characterized by large natural climate oscillations that can be correlated to extraterrestrial solar or planetary oscillations such as a large 60 year cycle. The presence of these natural cycles would imply that climate can cool in the next decades.





Presentation: Physical Sciences Building II 1100 @ 3:00 pm
Refreshments: 1st Floor Atrium @ 2:30 pm

Please note unusual date

More details at http://www.physics.odu.edu
All are Welcome!

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/loclphys/attachments/20100205/0cdef01e/attachment.html