Fig. 3: Interaction of the MJO with the North Pacific Jet.

MJO-LPT (green contour and shading) and rainfall (blue scale), 200 mb irrotational wind (vectors), wind speed (greyscale), and negative PV advection by the irrotational wind (colored contours every 0.5 PVU/day) at 00 UTC on a Jan 5, b Jan 12, c Jan 16, d Jan 20, e Jan 24, f Jan 26, g Jan 27, h Feb 5. i Time series of 200 mb maximum negative PV advection by the irrotational wind in the 90–180°E/10–50°N box. The January climatological position and magnitude of the North Pacific Jet is shown in the inset axis of a along with the box used to compute the MJO-NPJ interaction.