What is the atmospheric circulation phenomenon?

Discovery of large airflow ring phenomenon

There are many "secrets" hidden in the thick atmosphere above the earth. Its endless movement has changed the climate in various parts of the earth and formed different biological zones. 192 1 year, the Norwegian meteorologist Piknes announced the atmospheric circulation model to the whole world, thus revealing the law of atmospheric movement over the earth.

The atmosphere above the earth is not static. It likes to run around like a naughty child. Scientists have found that the motion of the atmosphere has its own laws. In addition to moving horizontally and vertically, it also circulates around the clock. This is what we call atmospheric circulation today.

In the history of human science, Norwegian meteorologist V Pieckness occupies an important position because he is the main founder of modern meteorology and atmospheric dynamics. 192 1 year, he announced the famous atmospheric circulation model to the world according to the facts observed for many years.

Generally speaking, atmospheric circulation mainly refers to the planetary wind system on a global scale. The atmosphere circulates along a certain circular line, which is divided into three levels: the largest first-order circulation, which is huge in scale and runs around the world, such as easterly belt and westerly belt; Monsoon, cyclone and anticyclone are all manifestations of secondary circulation; The secondary circulation has the smallest range, which is generally manifested as land-sea wind, valley wind and so on. Through circulation, the atmosphere can realize heat exchange and water vapor transport. Because of atmospheric circulation, the climate around the world is ever-changing and colorful.

It is no accident that Pixar founded the atmospheric circulation model. When he studied the earth's atmospheric movement, he tried to introduce the concept of physics and explore the laws of atmospheric circulation. He used positive and negative physics to distinguish different circulation forms, such as positive cyclone circulation and negative anticyclone circulation, and further explored the law of circulation changing with time. So, Piknes put forward the atmospheric circulation theorem. He believes that air moves due to baroclinic action, which is the cause of circulation. The stronger the baroclinic of the atmosphere, the greater the change of circulation, and vice versa. In this process, the air with high density flows in the direction of low pressure, and the air with low density flows in the direction of high pressure. In this way, the potential energy in the atmosphere becomes the kinetic energy of atmospheric motion. The introduction of Piknes circulation theorem laid the foundation of dynamic meteorology and meteorology.

Pieckness's love of science will never stop. From 19 13 to 19 17, he found that there were discontinuities in the atmosphere. He divided them into different types, such as cold and warm fronts, and put forward a modern cyclone model. 19 17 Established Bergen Geophysical Research Institute in Norway, expanded meteorological observation network and established weather analysis and forecast center.

Because of the atmospheric circulation model, Piknes revealed the secret of atmospheric movement, which made him go down in the history of human science forever. Because of his great contribution to the world meteorological cause, Pines was elected as a foreign member of the Royal Society and a foreign academician of the American Academy of Sciences.