Pressure Belts of Earth

• On the earth’s surface, there are seven pressure belts.
• They are the Equatorial Low, the two Subtropical highs, the two Subpolar lows, and the two Polar highs.
• Except for the Equatorial low, the others form matching pairs in the Northern and Southern Hemispheres.

Subtropical High-Pressure Belts

• At about 30°North and South of Equator lies the area where the ascending equatorial air currents descend.
• This area is thus an area of high pressure.
• It is also called as the Horse latitude.
• Winds always blow from high pressure to low pressure.
• So the winds from subtropical region blow towards the Equator as Trade winds and another wind blow towards Sub-Polar Low-Pressure as Westerlies.

Source: ICSE book