The main factors influencing rainfall are the air streams, the inter-tropical convergence zone and topography.
2.
The second condition is the shift in the position of Inter-Tropical Convergence Zone ( ITCZ ).
3.
All three have failed to emerge from the Inter Tropical Convergence Zone since the leaders made a relatively fast escape.
4.
Exceptionally, swarms of the desert locust, " Schistocerca gregaria ", flew westwards across the Atlantic Ocean for 4500 km during October 1988, using air currents in the Inter-Tropical Convergence Zone.
5.
The northward movement of the Inter-Tropical Convergence Zone brings a great deal of rain in the summer months, whereas for the rest of the year, the climate is rather arid.
6.
The northern part of the state, characterised by Monsoonal circulation, in the winter months from May to September is of generally warm dry offshore winds, drawn across the Inter-Tropical Convergence Zone by the low pressure systems of Monsoon Asia.
7.
The only time " Contact " falters is when it goes the Hollywood route, halfheartedly throwing onscreen a stop-and-go romance between Ellie and Matthew McConnaughey's New Age zealot who acquires power as a presidential guru years after a night of tropical convergence with Ellie.
8.
The south of the Sahara Desert, along the boundary with the hot semi-arid climate ( " BSh " ) of the Sahel, receives most of its annual rainfall during the highest-sun months ( summer ) when the Inter-Tropical Convergence Zone moves up from the south.
9.
By restricting the North Indian Ocean to south of 25o N, the Asian landmass prevents the basin from having access to the sub-tropical convergence zone, a region that usually occurs at a latitude of about 40o and is an important supplier of oxygen to the ocean.
10.
During this period, the lower temperatures reduced the strength of the Hadley Cell whereby rising tropical air of the Inter-Tropical Convergence Zone ( ITCZ ) brings rain to the tropics, while dry descending air, at about 20 degrees north, flows back to the equator and brings desert conditions to this region.
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