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PI: Marc d'Orgeville
Institution: University of Toronto
Abstract:
The nature of the Pacific Decadal Oscillation (PDO) has been investigated based upon analyses of sea surface temperature observations over the last century (d~Orgeville & Peltier, 2007, submitted to GRL). It has been argued that the PDO can be interpreted as arising through the excitation of ocean basin modes that are superimposed on a multidecadal modulation. This modulation is strongly time-lag correlated with the Atlantic Multidecadal Ocsillation (AMO). This analysis has suggested that the AMO and the multidecadal modulation of the PDO may be interpreted as two components in phase quadrature of the same oscillation cycle which has a period of approximately 60 years.

We would like to investigate the relationship of the PDO and the AMO in the different output of the CMIP3 archive, first in long control runs where a statistical equilibrium is reached, and then in forced global warming scenario runs.
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