Figure 4
(a) Hovmöller diagram of 5\(^{\circ }\)S-5\(^{\circ }\)N averaged IMERG rainfall. The red (blue) contours show rainfall (OLR) anomalies with 0.1, 0.2, 0.3 mm hr\(^{-1}\) (5, 10, 15, 22 W m\(^{-2}\)) values over the same latitudinal band filtered for CCKW (30-60 day ISO). The dashed contours show negative anomalies. (b) Same as (a) but for the ERA5 850 hPa zonal winds. The red contours show wind anomalies (0.5, 1, 1.5, 2, and 3 m \(s^{-1}\)) filtered for CCKW and the blue contours show for 30–60 day ISO (at 1 m s\(^{-1}\) intervals). The dashed contours show positive anomalies. The black lines in (a) and (b) show flight tracks and the dots show dropsonde locations.
