HR: 0800h
AN: GC21A-0163    [Abstracts]
TI: Oceanic Influences on Recent Continental Warming
AU: Compo, G P
EM: Gilbert.P.Compo@noaa.gov
AF: Climate Diagnostics Center/CIRES/University of Colorado and Physical Sciences Division/ESRL/NOAA, R/PSD1, 325 Broadway, Boulder, CO 80305,
AU: * Sardeshmukh, P D
EM: Prashant.D.Sardeshmukh@noaa.gov
AF: Climate Diagnostics Center/CIRES/University of Colorado and Physical Sciences Division/ESRL/NOAA, R/PSD1, 325 Broadway, Boulder, CO 80305,
AB: Evidence will be presented that the recent worldwide warming of the continents has occurred largely in response to a worldwide warming of the oceans rather than as a direct response to increases of greenhouse gases (GHGs) over the continents. Atmospheric model simulations of the last half-century with prescribed observed ocean temperature changes, but without prescribed GHG changes, account for most of the continental warming. The oceanic influence has occurred through hydrodynamic-radiative teleconnections, primarily by moistening the air over the continents and increasing the downward longwave radiation at the surface. The oceans may themselves have warmed from a combination of natural and anthropogenic influences, as suggested by substantial differences between the observed recent warming trend and the ensemble-mean warming trend simulated by the IPCC models with all the radiative forcings included.
UR: http://www.cdc.noaa.gov/people/gilbert.p.compo/CompoSardeshmukh2007.pdf
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 1630 Impacts of global change (1225)
DE: 1637 Regional climate change
DE: 1694 Instruments and techniques
SC: Global Environmental Change [GC]
MN: 2007 Fall Meeting