The diagram shows the convection cells with circulating air patterns. Trade winds, Westerlies , Polar easterlies and Doldrums are identified. These global winds curve to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. The diagram provides the below additional information about wind belts:

• The circulating air patterns are called “convection cells.
• Warm air rises at the equator until it reaches the top of the troposphere.
• Dry air sinks Earth’s rotation over the world’s deserts.
• The area where the trade winds die out is known as the doldrums.
• Very cold air sink sat the poles and flows outward, creating winds called polar easterlies.