An illustration of the Bangladesh/East Indian severe storm environment can be foundhere. The result is aloaded guntype sounding that we see here in theplains.
Surface
flow from the Bay of Bengal increases by late March and early April.
This can be viewed as
a monsoon flow of sorts.
Westerly mid-level flow
around the Tibetan Plateau advects the Indian mixed layer over the Bengal
moist tongue. This leads to the elevated
mixed layer. Note that parts of the Indian desert
are
"elevated"(1-3000ft) compared to Bangladesh which is near sea lavel.
The southern branch of
the polar jet often retreats north of the Tibetan Plateau by May, leaving
light mid to
high level flow across the Bengal region.
