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Interactions between the Responses of North American Climate to El Nino/La Nina and to Secular Warming Trend in the Indian-Western Pacific Oceans. Gabriel Lau. Geophysical Fluid Dynamics Laboratory/NOAA Princeton University. CORRELATION: SST(FMA) vs NINO INDEX(NDJ) MODEL. OBSERVATION.
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Interactions between the Responses of North American Climate to El Nino/La Nina and to Secular Warming Trend in the Indian-Western Pacific Oceans Gabriel Lau Geophysical Fluid Dynamics Laboratory/NOAA Princeton University
CORRELATION: SST(FMA) vs NINO INDEX(NDJ) MODEL OBSERVATION (Alexander et al. 2002, J.Clim., Fig.2) (Alexander et al. 2002, J.Clim., Fig.3)
200 mb Z JJA(1) IWP-CLIMO
Correlation with Great Plains Precipitation 200 mb Z Schubert et al. 2004
SST Sensitivity Runs • Name of • ExperimentSST Forcing • EN El Niño • LN La Niña • T(IWP) 50-yr Trend in Indo-Western Pacific • T(IWP)+EN Sum of IWP Trend and El Niño • T(IWP)+LN Sum of IWP Trend and La Niña • C Climatological
C20C A1B
C20C A1B
Experiment Design SST Predicted by Mixed Layer Model SST Anomaly Prescribed SST Climatology Prescribed 1950 1999 Total of 16 realizations GFDL R30 14-Layer GCM Prescribed SST in Deep Tropical Central / Eastern Pacific Two-way coupling with a variable-depth ocean mixed-layer elsewhere