FIGURE T18. Mean (top) and anomalous (bottom) sea surface temperature. Contour interval is 2�C (top) and 1�C (bottom). Temperatures >20�C are contoured every degree with odd contours dashed in top panel. Dashed contours in bottom panel indicate negative anomalies. SST anomalies are departures from the 1971�2000 base period means (Smith and Reynolds 1998, J. Climate, 11, 3320�3323).