HR: 1340h
AN: A23B-0783    [Abstracts]
TI: Coupled ocean-atmosphere multi-decadal oscillation in the Southeast Pacific Basin simulated by a climate model
AU: * Yih, H
EM: hyih@jamstec.go.jp
AF: Frontier Research Center for Global Change, 3173-25 Showa-machi , Kanazawa-ku , Yokohama, 236-0001 Japan
AU: Chan, W
EM: wlchan@jamstec.go.jp
AF: Frontier Research Center for Global Change, 3173-25 Showa-machi , Kanazawa-ku , Yokohama, 236-0001 Japan
AB: A natural period and related spatial pattern are estimated from integration results of GFDL R15 climate model with no increase of greenhouse gases and sulfate aerosols. The period of 30-40 years in and around the Southeast Pacific Basin is close to those estimated from climate proxies of tree-ring, ice core, and deep-sea sediments. Results of composite analysis show that sea-ice thickness and sea-level pressure could represent strong coupled feature in the model climate through the oscillation in time and space. Strong variability of atmospheric surface wind approximately matches with closed contours of planetary vorticity, f/H, in the basin.
DE: 1600 GLOBAL CHANGE (New category)
DE: 1610 Atmosphere (0315, 0325)
DE: 1620 Climate dynamics (3309)
DE: 1635 Oceans (4203)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting