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.
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The low pressure belt found at the equator is known as the Intertropical Convergence Zone (ITCZ). It is characterized by warm, rising air and often experiences convective storms and heavy rainfall. The ITCZ is a region where the trade winds from both hemispheres meet and converge.
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.
The pressure belts are located at different latitudes rather than longitudes. Some of the main pressure belts include the equatorial low-pressure belt near the equator, the subtropical high-pressure belts around 30 degrees north and south latitudes, and the subpolar low-pressure belts near the poles.
High pressure belts form as a result of air cooling and descending at specific latitudes in the Earth's atmosphere. As the air sinks, it becomes warmer and denser, creating an area of high pressure at the surface. These high pressure belts are typically found around 30 degrees north and south of the equator, known as the subtropical highs.
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.