HR: 09:25h
AN: SH51E-06 INVITED     [Abstracts]
TI: Recent Advances in Solar Influences on Earth's Climate
AU: * North, G R
EM: g-north@tamu.edu
AF: Texas A&M University, Department of Atmospheric Sciences, College Station, TX 77843-3150 United States
AB: This talk reviews recent studies on the impact of solar variability on the Earth's climate system. Some attention will be given to recent reports drawn from paleoclimatology and others from climate modeling. The paleoclimatological studies include attempts to explain the surface temperature record over the last 1000 years with some attention to reconciling several of the records. Some modeling studies have been applied to these long records, but most of the modeling attention will be focused on attempts to detect the 11 year cycle in the large scale temperature fields. After reviewing recent successful detection studies by the author's group utilizing the last century's record, several more recent studies will be examined in an attempt to understand the underlying mechanisms involved. The more recent studies make use of shorter records but take into account vertical information as well as data taken at the surface. The tentative conclusion is that the response over the last few cycles is rather large at some latitudes, and the cause might originate in dynamical alterations of the general circulation rather than merely the often-suggested energy balance considerations. The response to the 11-year cycle is likely to be a roughly equal combination of both dynamical and simple energy balance effects at least at some latitudes.
DE: 7536 Solar activity cycle (2162)
DE: 1620 Climate dynamics (3309)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting