There are three wide belts of planetary winds that encircle the Earth. These belts play a significant role in our atmosphere and weather patterns. The first belt is the troposphere, which is the lowest and most dense layer of our atmosphere. The troposphere extends from the Earth’s surface to an altitude of about 10 kilometres. The second belt is the stratosphere, which sits just above the troposphere and extends to an altitude of about 50 kilometres. The third belt is the mesosphere, which sits just above the stratosphere and extends to an altitude of about 85 kilometres. In this article, we will discuss these three belts and their role in our atmosphere!
What Are The Belts of Planetary Winds?
The belts of planetary winds are three wide bands of west-to-east flowing air that encircle the Earth. These belts are caused by the planet’s rotation and the resulting Coriolis effect. The Coriolis effect is a force that deflects moving objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. The belts of planetary winds are named for the regions where they blow: the polar easterlies, the westerlies, and the trade winds.
The Polar Easterlies
The polar easterlies are a band of wind that blows from the east across the North and South Poles. These winds are caused by the rotation of the Earth and the resulting Coriolis effect. The polar easterlies are the strongest winds in the belts of planetary winds.
The Westerlies
The westerlies are a band of wind that blows from the west across the middle latitudes of the Earth. These winds are caused by the rotation of the Earth and the resulting Coriolis effect. The westerlies are weaker than the polar easterlies, but they are still strong enough to affect weather and climate.
The Trade Winds
The trade winds are a band of wind that blows from the east across the tropics. These winds are caused by the pressure gradient between the high pressure at the equator and the low pressure at the poles. The trade winds are the weakest of the three belts of planetary winds.
3 Belts Of Planetary Winds
There are three belts of planetary winds. Some of them are:
- Troposphere: The region of the atmosphere where temperature decreases with height. The troposphere is the lowest layer of the atmosphere and extends from the Earth’s surface to an altitude of about 12 kilometres.
- Stratosphere: The region of the atmosphere where temperature increases with height. The stratosphere extends from an altitude of about 12 kilometres to an altitude of 50 kilometres.
- Mesosphere: The region of the atmosphere where temperature decreases with height. The mesosphere extends from an altitude of 50 kilometres to an altitude of 80 kilometres.
Benefits Of 3 Belts Of Planetary Winds
- The belts of planetary winds are a very important part of the Earth’s climate. They help to distribute heat around the planet and they also help to moderate the Earth’s weather.
- Without the belts of planetary winds, the Earth would be a very different place. The climate would be much more extreme, and the weather would be very unpredictable.
Limitations Of 3 Belts Of Planetary Winds
The belts of planetary winds are not perfect. They can be affected by things like the El Nino Southern Oscillation (ENSO). ENSO is a natural phenomenon that occurs when the trade winds weaken. This can cause the Earth’s climate to change in unpredictable ways.
The belts of planetary winds also have a limited ability to distribute heat. They are not as effective at distributing heat as the oceans are. The oceans can store heat and release it slowly over time. This helps to moderate the Earth’s climate and keep it stable.
Conclusion
The winds on Jupiter, Saturn, Uranus and Neptune are created by the planets’ rotation. These winds are much faster than the Earth’s winds and can reach speeds up to 1,500 mph (2,400 km/h). Each planet has three wide belts of wind that circles the planet. The colours of these belts vary depending on the gas composition of each planet. For example, Jupiter’s red belt is made up of high-pressure hydrogen gas.