Look at the Monsoon diagrams first!
As the overhead sun appears to move [?] to the Tropic of [?] in June, it draws with it the convergence zone associated with the [?]. The increase in insolation over northern India, Pakistan and central Asia means that heated air [?], creating a large area of [?] pressure.

Consequently, warm moist Em (equatorial maritime) air and Tm (tropical maritime) air, from the [?] Ocean, is first drawn northwards and then, because of the [?] force caused by the spinning Earth, is diverted north-eastwards.

The air is humid, unstable and conducive to [?]. Amounts of precipitation are most substantial on India's west coast, where the air rises over the Western Ghats, and in the [?] mountains to the north.

Mumbai ([?]) has 2000mm and Cherrapunji 13000mm of rainfall in four summer months.

The arrival of the monsoon allows the planting of [?].

Rainfall totals are accentuated as the air rises by both orographic and convectional uplift and the 'wet' monsoon is maintained by the release of substantial amounts of [?] heat of condensation.

The average arrival date is 10th May in Sri Lanka and 5th July at the Pakistan border - a delay of seven weeks!