Figure 4
Composite map of (a) the 200-hPa GPH (shaded; m) anomalies for C1. (b), (c), and (d) are the same as (a) but for the 200-hPa stream function (shaded; m2 s–1) and WAF (vector; m2 s–2), 2-m air temperature (shaded; ℃), and OLR (shaded; W m–2) anomalies, respectively. WAF was omitted when its magnitude was less than 15 m2 s–2. Contours represent statistically significant areas satisfying the 99% confidence level based on the Student’s t-test. Maps were generated using GrADS version 2.1.a1 (http://cola.gmu.edu/grads/downloads.php).
