The equator is an intensely heated throughout the year .
Due to the intense heating the air in this region becomes warm and light and it rises above creating a partial vacuum .(As you know vacuum leads to decrease in air pressure)
As a result a region of permanent low pressure is created called the equatorial low pressure belt.
The belt of low pressure at the equator is called the intertropical convergence zone.
The extent of the equatorial low pressure belt is from 5 degree north to 5 degree south latitude.
Horse Latitudes.
Equatorial Low
Doldrums
doldrums...
The Intertropical Coverance Zone. Or to abbreviate, ITCZ.
due to high temperature north west India becomes a seat of low pressure .this condition attracts the south east trade winds from southern hemisphere and while crossing the equator the winds change their direction to south west
The convection cells radiate heat.
Trade Winds
The Intertropical Coverance Zone. Or to abbreviate, ITCZ.
The uneven heating of the earth produces pressure belts. these belts occur at about every 30 degrees latitude. The rotation of the Earth flings the bulk of the air creating an area of low pressure belt in this region.
pressure belts
due to high temperature north west India becomes a seat of low pressure .this condition attracts the south east trade winds from southern hemisphere and while crossing the equator the winds change their direction to south west
The convection cells radiate heat.
Trade Winds
in equitorial low pressure belt , low pressure is due to 1) intense heating 2) rate of rotation of earth is max. at equator . this results in max centrifugal force at equator which pushes the air away from the surface and causes low pressure condition.
Air usually rises at low pressure areas
Because high pressure belts have sinking motion and dry conditions. Low pressure belts have rising motions and havey rainfall. pce
Because high pressure belts have sinking motion and dry conditions. Low pressure belts have rising motions and havey rainfall. pce
equator