Section 3.5: Variability in the Ocean Interior
47
Figure 3.11: Top: EOF 2 of North Atlantic SST anomalies based on unnormalized winter (November-March) means, for the period 1900-1989. This
mode accounts for 12% of the variance. Also shown is the climatological SST
distribution (thin contours).
Bottom: Spectrum of EOF 2. The thin line represents a background red
noise spectrum and its 95% confidence limit. (From Deser and Blackmon,
1993).
70"N
3O"N
90 0 W
IOOW
IO"E
4
2
o~~~~~~~~~~~~~~
36 18 12 9 7 6
4.5 3.6 3
2.6 2.2 2
Period (yeors)