I am having trouble with the global patterns of atmospheric heating and circulation. I don't completely understand.
These sites should help you.
http://www.nc-climate.ncsu.edu/edu/k12/.atmosphere_circulation
http://www.metoffice.gov.uk/learning/learn-about-the-weather/how-weather-works/global-circulation-patterns
Global patterns of atmospheric heating and circulation, also known as atmospheric circulation, refer to the large-scale movements of air around the Earth driven by unequal heating and cooling of the atmosphere. These patterns play a crucial role in shaping weather and climate patterns across the globe.
To better understand global patterns of atmospheric heating and circulation, you can follow these steps:
1. Start with the basics: Atmospheric circulation occurs because sunlight is more concentrated at the equator and less so at the poles. This uneven distribution of solar energy creates temperature differences, driving the movement of air masses.
2. Study the concepts of convection: Warm air at the equator rises due to its lower density, forming a low-pressure area. This rising air cools and then moves towards the poles, both horizontally and vertically. As it reaches higher latitudes, it descends towards the surface, forming high-pressure regions.
3. Learn about the three main circulation cells: The global circulation is divided into three major cells: the Hadley cell, Ferrel cell, and Polar cell.
- Hadley cell: Located near the equator, this cell is responsible for the tropical trade winds. Warm air rises at the equator, moves towards the poles at high altitudes, and descends around 30° latitude.
- Ferrel cell: Found between 30° and 60° latitude in both hemispheres, the Ferrel cell is driven by air moving poleward from the subtropics and equator. It creates westerly winds and is associated with the mid-latitude weather systems.
- Polar cell: Located near the poles, this cell involves cold air sinking and moving towards lower latitudes, creating polar easterlies.
4. Understand the impact of the Coriolis effect: The rotation of the Earth affects the direction of moving air masses. In the Northern Hemisphere, air is deflected to the right, while in the Southern Hemisphere, it is deflected to the left. This deflection gives rise to prevailing winds, such as the westerlies and trade winds.
5. Explore other atmospheric phenomena: Once you grasp the basic concepts, delve into additional phenomena that influence global atmospheric circulation, such as jet streams and monsoons.
6. Utilize visual aids: Visualizing the global patterns of atmospheric heating and circulation through diagrams, animations, and maps can significantly aid comprehension. Online resources and textbooks may provide helpful illustrations.
7. Study real-life examples: Explore case studies or real-world weather patterns associated with specific circulation patterns, such as El Niño and La Niña events or the formation of hurricanes and tropical cyclones.
By following these steps and consistently learning and practicing, you can improve your understanding of global patterns of atmospheric heating and circulation.