Traditional Culture Encyclopedia - Weather forecast - Is the autumn weather good in Beijing?

Is the autumn weather good in Beijing?

In autumn, Wan Li is clear, the weather is cool, the sky looks blue and the climate becomes cool.

Causes of climate formation:

From the climatological point of view, such a climate is formed. On the one hand, after entering autumn, the night becomes longer, the ground heat dissipation increases, the temperature difference gradually increases, and the gradually cold and dry air brings people cool and sunny autumn days; On the other hand, after the rainy summer, the soil is wet, the autumn wind in Beijing is weak, and there are few strong winds in history, so the air is clear, which gives people a particularly fresh feeling.

It has a very direct relationship with the latitude and longitude, land and sea orientation and geographical environment of Beijing. Beijing has a monsoon climate. The northwest is Xishan Yanshan, which belongs to the Taihang branch and is connected with the Mongolian Plateau and the Loess Plateau. To the southeast, the vast North China Plain is adjacent to the vast ocean, forming a special geographical environment with mountains and water. During the day, the plain receives more solar radiation than the mountain, and the southeast wind is formed when the air expands along the hillside, which is called the valley wind in climatology; At night, the air in the mountain plateau cools rapidly and sinks along the hillside, forming a northwest wind, which is called mountain wind in climatology. This has almost become the regular language of weather forecast in Beijing. The wind turns from south to north at night and from north to south during the day. The law of this wind direction, plus atmospheric pressure. The influence of airflow and the change of temperature also constitute the climate characteristics of Beijing. When the average temperature drops below 22 degrees, summer ends and autumn comes. When the average temperature drops below 10 degrees, autumn will be covered by a long winter.