What are the 5 main factors that determine global air circulation patterns?
There are 5 major factors affecting global air circulation : – uneven heating of earth’s surface, seasonal changes in temperature and precipitation, rotating of earth on its axis, properties of air and water and long term variation in the amount of solar energy striking the earth.
What are 4 factors that affect global air circulation?
There are four huge factors that determine global air circulation patterns:
- Uneven heating of the Earth’s surface by the sun.
- Seasonal changes in the temperature and precipitation.
- Rotation of the Earth on its axis.
- Properties of air, water, and land.
What are the global wind patterns?
They are the Polar Easterlies, the Prevailing Westerlies, and the Trade Winds. Each one of them rules roughly 30 degrees of latitude, like wind belts around the Earth.
What is global air circulation?
The global circulation can be described as the world-wide system of winds by which the necessary transport of heat from tropical to polar latitudes is accomplished. In each hemisphere there are three cells (Hadley cell, Ferrel cell and Polar cell) in which air circulates through the entire depth of the troposphere.
What factors affect global warming?
Geological records show that there have been a number of large variations in the Earth’s climate. These have been caused by many natural factors, including changes in the sun, emissions from volcanoes, variations in Earth’s orbit and levels of carbon dioxide (CO2).
How are winds affected by global climate change apes?
As the Earth spins on the axis, the equator spins faster than the poles; north to south air currents are deflected, which curves the global wind patterns (called the prevailing winds). The convection cells at the equator.
What is Enso apes?
El Nino-Southern Oscillation (ENSO) a periodic ocean anomoly caused by upper atmosphere changes in the Southern Hemisphere that weaken or reverse the trade winds and cause warm water to move eastward across the Pacific basin.
What are the 3 global wind patterns?
There are three prevailing wind belts associated with these cells: the trade winds, the prevailing westerlies, and the polar easterlies (Fig.
What causes global air circulation?
The reason we have different weather patterns, jet streams, deserts and prevailing winds is all because of the global atmospheric circulation caused by the rotation of the Earth and the amount of heat different parts of the globe receive.
What is the global atmospheric circulation model?
Global atmospheric circulation model. When the air reaches the top of the atmosphere it needs somewhere to go. Some of the air travels north and some south of the equator. The air cools and then sinks at around 30° north and south of the equator. As the air is sinking this creates high pressure.
What do you need to know about global air circulation?
LESSON 2: GLOBAL AIR CIRCULATION Key Concepts In this lesson we will focus on summarising what you need to know about: The mechanics present to create global wind and pressure belts as a response to the unequal heating of the atmosphere The relationships between air temperature, air pressure and wind
How does global atmospheric circulation affect the weather?
Global atmospheric circulation creates winds across the planet as air moves from areas of high pressure to areas of low pressure. It also leads to areas of high rainfall, like the tropical rainforests, and areas of dry air, like deserts.
What is the global wind circulation?
Over the major parts of the Earth’s surface there are large-scale wind circulations present. The global circulation can be described as the world-wide system of winds by which the necessary transport of heat from tropical to polar latitudes is accomplished.