What is atmospheric circulation?

Atmospheric circulation is global air movement that distributes the heat taken from sunlight from warmer to cooler areas. If the Earth did not turn on its axis and had a smooth and uniform surface, the hot air would rise to the equator and flow towards the poles. This would cool down there and sink and create a return flow to the equator along the ground surface. There would be two large, evenly rotating convection cells, one in the northern hemisphere and one in the south. Instead of this simplified pattern, the atmospheric circulation of the country is extremely more complicated. In fact, there are three convections on each hemisphere. The heated, humid tropical air near the equator rises and flows from the equator forming a rake cell. Over the poles, cold, dry air descends and controls polar cells. Ferrel cells are more variable and find semezi Hadley and polar cells.

4 instead of winds flowing in a straight line, the rotation of the earth will cause them to make themare curved. Coriolis force diverts the winds of the northern hemisphere to the right and the wind of the southern hemisphere to the left. It contributes to the formation of western winds in medium Latids and Easter winds in tropical and polar zones. The strength of Coriolis also produces rotary winds around high and low -pressure cells.

seasonal shifts in atmospheric circulation are caused by the slope of the ground axis. As the direct rays of the sun move seasonally north and south of the equator, circulatory formulas change. The heads on the ground surface also affect global atmospheric circulation. The larger country of Area on the northern hemisphere and the corresponding larger ocean areas in the southern hemisphere cause changes in three convection cells on each hemisphere.

2 until the 20th century were created accurate models of atmospheric circulation using computers and satellite data. These models were very similar to the actual functioning of the atmosphere and helped scientists better understand climate and weather patterns. Timely progress in weather forecast by computer modelIt has developed much more realistic and more complex models allowed more accurate predictions. Atmospheric circulation models are used to understand long -term climate change in the past and predict the effects of changes in the future.