Table of Contents
- 1 Why does the equatorial region has constant low pressure throughout the year?
- 2 Why low pressure is found at the equator?
- 3 Why does low atmospheric pressure prevails over the circumpolar region?
- 4 Why is equatorial region hot and wet throughout the year?
- 5 Why are cyclones always followed by anticyclones?
- 6 What is the climate in the equatorial low pressure belt?
- 7 What is the distribution of sea level pressure at the Poles?
Why does the equatorial region has constant low pressure throughout the year?
Equatorial regions have low atmospheric pressure throughout the year because atmospheric pressure decreases with increase in temperature. This is because when the temperature rises, air expands. The molecules of air move far apart and hence exert less pressure.
Why low pressure is found at the equator?
At the equator, the ground is intensely heated by the sun. This causes the air to rise which creates a low-pressure zone on the Earth’s surface.
Is there low pressure at the equator?
At the equator there is an area of low pressure, due to the rising and expanding air. At around 30º North the sinking air creates an area of high pressure.
What is the name of low pressure in equatorial region?
Equatorial Low Pressure Belt or ‘Doldrums’ This belt happens to be the zone of convergence of trade winds from two hemispheres from sub-tropical high pressure belts. This belt is also called the Doldrums, because of the extremely calm air movements.
Why does low atmospheric pressure prevails over the circumpolar region?
Due to earth’s rotation, the winds surrounding the Polar region blow towards the Equator. Centrifugal forces operating in this region create the low pressure belt, known as Circum-polar low pressure belt.
Why is equatorial region hot and wet throughout the year?
Originally Answered: Why is the equatorial region uniformly hot throughout the year? There are no seasons in equatorial climate. Temperature is high due to sun which is directly above the area. High temperatures evaporates the water so that’s why its humid and it often results in convectional rain.
What type of pressure occurs at the equator?
Low pressure bands are found at the equator and 50°-60° N/S. Usually, fair and dry/hot weather is associated with high pressure, with rainy and stormy weather associated with low pressure. You can see the results of these circulations on a globe.
How does a low pressure area develop?
A low pressure area usually begins to form as air from two regions collides and is forced upward. The rising air creates a giant vacuum effect. Hence, a zone of low pressure is produced with the lowest pressure near the center of the storm. As a storm approaches a particular area, the barometric pressure will lower.
Why are cyclones always followed by anticyclones?
Answer: Explanation: This is because the Coriolis effect directs winds away from their original path due to the rotation of the Earth and deflects winds to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. Anticyclones are spinning storms around high-pressure systems.
What is the climate in the equatorial low pressure belt?
In the equatorial low pressure belt the air is warm and moist. Equatorial trough of low pressure is the zone of convergence of trade winds blowing equatorward from the sub-tropical belts of high pressure in the northern and southern hemispheres. Within this belt the winds are light and variable with frequent calms.
What is the difference between Equatorial low and polar high?
Near the equator the sea level pressure is low and the area is known as equatorial low. Along 30° N and 30° S are found the high-pressure areas known as the subtropical highs. Further pole wards along 60° N and 60° S, the low-pressure belts are termed as the sub polar lows. Near the poles the pressure is high and it is known as the polar high.
Where is the equatorial trough of low pressure located?
The equatorial trough of low pressure is located in the vicinity of the geographical equator between latitudes 5°N and 5°S. This is the mean position of this pressure belt. In fact, like the belt of maximum temperature this trough of low pressure extends more to the north than to the south of the equator.
What is the distribution of sea level pressure at the Poles?
World Distribution of Sea Level Pressure. Along 30° N and 30° S are found the high-pressure areas known as the subtropical highs. Further pole wards along 60° N and 60° S, the low-pressure belts are termed as the sub polar lows. Near the poles the pressure is high and it is known as the polar high.