Figure F4. Ten-day National Oceanic and Atmospheric Administration HYSPLIT backtracks (2007–2011). Green indicates rain-bearing air trajectories. Rain-bearing trajectories over India are dominated by summer season (southwest) winds, whereas both winter (northerly) and summer (southerly) air masses carry precipitation to the monsoonal region of southeast China. This is consistent with World Meteorological Organization rainfall records indicating that JJA rainfall accounts for 50% of the total annual rainfall in this region. The Bay of Bengal location better isolates the summer season dynamics.
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