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Observed November–March mean trend patterns for 1960–1976. (A) LSAT (filled circles; in degrees Celsius per 17 y), SLP (contour interval, 1 hPa per 17 y), and marine surface wind (vectors; in meters per second per 17 y). Larger circles in A and stippling in B indicate LSAT and SST trends exceeding the 90% confidence level, respectively. Positive (negative) SLP trends are indicated by solid (dashed) contours, and zero contours thickened.
