HR: 12:05h
AN: PP52A-08    [Abstracts]
TI: The Importance of Dynamical Responses to Forcing in Understanding Climate Changes Over the Past Millennium
AU: * Mann, M E
EM: mann@psu.edu
AF: Department of Meteorology and Earth and Environmental Systems Institute, Pennsylvania State University, Walker Buildling, University Park, PA 16827, United States
AU: Fan, F
EM: fxf908@psu.edu
AF: Department of Meteorology and Earth and Environmental Systems Institute, Pennsylvania State University, Walker Buildling, University Park, PA 16827, United States
AU: Zhang, Z
EM: zuz10@psu.edu
AF: Department of Meteorology and Earth and Environmental Systems Institute, Pennsylvania State University, Walker Buildling, University Park, PA 16827, United States
AU: Ammann, C
EM: ammann@ucar.edu
AF: Climate Global Dynamics Division, National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Shindell, D
EM: dshindell@giss.nasa.gov
AF: NASA/Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, United States
AU: Schmidt, G
EM: gschmidt@giss.nasa.gov
AF: NASA/Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, United States
AB: We describe analyses of the dynamical response of the climate to different agents of radiative forcing over the past millennium that are likely in many regions to overwhelm global mean responses. Considered in particular are the responses of the Arctic Oscillation/North Atlantic Oscillation, the El Nino/Southern Oscillation (ENSO) and the Asian summer Monsoon to natural solar and volcanic radiative forcing. Our findings indicate varying importance of natural volcanic and solar radiative forcing depending on the temporal and regional scales considered. Comparisons against available historical and proxy data are made with respect to several different climate variables (surface temperature, sea level pressure, and precipitation/drought).
DE: 3344 Paleoclimatology (0473, 4900)
DE: 4900 PALEOCEANOGRAPHY (0473, 3344)
SC: Paleoceanography and Paleoclimatology [PP]
MN: 2007 Fall Meeting