<html xmlns="http://www.w3.org/TR/REC-html40" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:v="urn:schemas-microsoft-com:vml">
<head>
</head>
<body vlink="purple" link="blue" lang="EN-US">
<div class="Section1">
<p align="center" class="MsoNormal"><b><o:p> </o:p></b></p>
<p align="center" class="MsoNormal"><b>Old Dominion University<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b>Department of Physics<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b><o:p> </o:p></b></p>
<p align="center" class="MsoNormal"><b>Fall Colloquium Series<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal"><b>Thursday February 11, 2010<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal">"<b>Celestial origins of the
climate oscillations, a review</b>"<o:p></o:p></p>
<p align="center"><br>
<b>Dr. Nicola Scafetta<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b>Duke University</b><b><o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b><o:p> </o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p>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. <o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal">Presentation: Physical
Sciences Building II 1100 @ 3:00 pm<o:p></o:p></p>
<p align="center" class="MsoNormal">Refreshments: 1st Floor Atrium @ 2:30 pm<o:p></o:p></p>
<p align="center" class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal"><b>Please note unusual
date</b><o:p></o:p></p>
<p align="center" class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal">More details at <a href="http://www.physics.odu.edu">http://www.physics.odu.edu</a><o:p></o:p></p>
<p align="center" class="MsoNormal">All are Welcome!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>