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Figure 1: CGCM1 (DJF) SOI, PNA, and NAO.  The decrease in SOI is consistent with increasing El Nino-like conditions (i.e. ENSO cycles continue but from a warmer base state that roughly resembles current-day El Ninos).  The increase in the PNA is consistent with an increase in the strength of the Aleutian Low and the trend in the PDO (Figure 3 below).  While the NAO shows no trend, the AO (Figure 4 below) does show an increasing trend into the future, consistent with the historical trend.
 
 

Figure 2:  HADCM2 (DJF) a) SOI, PNA, and NAO  b) Modified SOI (called SOI* on the plot), with Tahiti's location shifted 12.5^o northwards and closer to the equator.  The modified SOI index does show a slight decrease over time, while the other indices do not show any strong trends.
 
 

Figure 3:  Pacific Decadal Oscillation (PDO) for CGCM1 and HADCM2.  Both models project an increase in the PDO, which is consistent with a strengthened Aleutian Low.