Fig. 9: Composites of 850-hPa meridional wind (V850) anomalies (ms−1).
From: Pacific decadal oscillation and ENSO forcings of northerly low-level jets in South America

The left column shows composites of V850 anomalies during Warm PDO and a El Niño and b La Niña phases. The middle column shows composites of V850 anomalies during Cold PDO and e El Niño and f La Niña phases. The right column shows composites of V850 anomalies during Cold PDO and i El Niño and j La Niña phases. Panels (c, g, k) and (d, h, l) show La Niña minus El Niño composites (linear component), and La Niña plus El Niño composites (nonlinear component), respectively. Solid (dashed) contours in the linear (c, g) and nonlinear (d, h) panels indicate positive (negative) anomalies statistically significant at a 95% confidence level. The contour interval is 1 ms−1.