The use of numerical simulation models has allowed us to hypothesize a southward movement of the whole range of convection when the reduction in the differential surface temperature of oceans (SST) between latitudes immediately to the south and north of the equator..

 

 

These fluctuations are attributable to the occurrence of events known as El Niño and La Niña, both summed up in the dynamics in the ENSO (El Niño Southern Oscillation). But it is swings that affect the interannual variability of the ITCZ, rather than a change of position so much as a significant and continuing what such research would seem to confirm. E 'therefore assumed that the forcing factor is that astronomical phenomena while agent through action and feedback is still rather obscure.

Global warming caused the increase of greenhouse gases into the atmosphere, could accentuate this shift in northern band of rain in the area of convergence, triggering the crisis of water shortages in areas where this problem does not now exist. This is with all due respect unnecessarily pessimistic and a bit shortsighted.

The discovery was made possible precisely by analyzing the changing climatic conditions of these areas, demonstrating that there is no status quo to be preserved regardless, that is not said that the climatic conditions in which our society has known the maximum development should be considered optimal or irrevocable, especially because this is absolutely not possible.