695067.fig.0011a
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695067.fig.0011b
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695067.fig.0011c
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Figure 11: Northern Annular Mode (NAM) captured from SLP anomalies over 20°–90°N during DJF season at 0-month lead for (a) CFSv2; (b) R2 data; (c) the corresponding EOF time series which gray (black) line is related to R2 (CFSv2). Contour interval is 1 hPa from 0.5 hPa and negative contours are dotted. (a) and (b) are adapted from IRI/LDEO Climate Data Library.