HR: 11:35h
AN: PP52A-06 INVITED    [Abstracts]
TI: Nothing Like the Sun?
AU: * Cane, M A
EM: mcane@ldeo.columbia.edu
AF: Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY 10964,
AB: Will the response to greenhouse warming be unlike the response to increased solar radiance? The models used for the IPCC projections by and large agree that the future state of the tropical Pacific will be more El Niño-like (i.e. greater equatorial Pacific warming in the east than in the west), yet a number of paleoproxy records appear to be telling us that the past response to enhanced solar heating was more La Niña-like (i.e. a colder eastern equatorial Pacific). The period of instrumental data is ambiguous, allowing different interpretations of recent trends. (e.g Cane et al 1997 Science vs. Vecchi et al 2006 Nature). There are a number of possible resolutions: (1) the models are not correct; (2) the standard interpretation of the proxy data is not correct; (3) the response to greenhouse gases is different. An overview considering all three possibilities will be presented.
DE: 3344 Paleoclimatology (0473, 4900)
DE: 4900 PALEOCEANOGRAPHY (0473, 3344)
SC: Paleoceanography and Paleoclimatology [PP]
MN: 2007 Fall Meeting