The zone of equatorial calm or Doldrums is the area that surrounds the Earth near the equator, which coincides with the low pressure belt. The strong warming of this area of the place to ascending currents as well as a warm and oppressive atmosphere, feared in other times by the Captains of the sailboats that had to cross it. The vertical movements that occur and the high humidity of the place to a sky, often covered with clouds of vertical development, rains, storms and electrical phenomena. The largest area of equatorial calm is in the Pacific.
