it is because air sinks at the poles
After high-pressure areas are formed around the poles, cold polar air flows towards lower pressure regions. This movement of air is known as advection, and it helps to balance out the pressure differences between the poles and lower latitudes.
The convection cells radiate heat.
The convection cells radiate heat.
sinks towards the surface, creating dense air masses. These high-pressure areas are also influenced by the rotation of the Earth, known as the Coriolis effect, which causes air to circulate in a clockwise direction around the poles.
Air flows from the poles to the equator due to the temperature difference between the two regions. Warm air rises at the equator, creating a low-pressure system, while cold air sinks at the poles, creating a high-pressure system. This pressure difference causes air to flow from the poles towards the equator to balance out the pressure.
low pressure and high pressure
you would expect it to have high pressure
north
it is because air sinks at the poles
After high-pressure areas are formed around the poles, cold polar air flows towards lower pressure regions. This movement of air is known as advection, and it helps to balance out the pressure differences between the poles and lower latitudes.
The convection cells radiate heat.
The convection cells radiate heat.
Because cold air is denser than warm air.
it is found over the north and south poles
Air falls at the poles due to the cooling of air, which increases its density causing it to sink. In addition, high pressure systems tend to form at the poles, leading to the downward motion of air.
High pressure zones are typically found around 30 degrees latitude in both hemispheres, known as the subtropical highs. They are also found at the poles, known as the polar highs. Additionally, there are high pressure systems associated with descending air in regions of surface high pressure, such as the Siberian High and the Bermuda High.
Atmospheric pressure is lower at the poles compared to the equator because of the Earth's shape and rotation. The polar regions receive less direct sunlight, causing the air to be cooler and denser. This creates high-pressure systems that lead to lower atmospheric pressure.