Figure 2. (a) Annual cycle of northward migration of the rain band over Indian longitudes as seen from time-latitude plot of daily climatological precipitation average over 70oE to 90oE. (b) Same as (a) but averaged over 120oE to 140oE. (c) JJAS mean regional overturning circulation (Hadley circulation) as seen from wind vectors formed with mean meridional and mean vertical velocities averaged over (70oE to 95oE).(d) Annual cycle of daily precipitation (mm/day) over central India (black) and annual cycle of kinetic energy (m2/s2) over west-central Arabian Sea (see text) at 850 hPa for 2008 (red).