Is there a northwest wind in autumn?

There is a northwest wind in autumn. In winter in the northern hemisphere, due to the interaction between Siberian high and Aleutian low, northwest wind, that is, winter wind, prevails. The winter wind in China comes from the inland, and the wind direction is northwest wind. The climate is characterized by low temperature and little rain.

Winter winds mainly affect northwest, northeast, north China (including North China Plain and Loess Plateau) and south China (south of Huaihe River in Qinling Mountains). The Qinghai-Tibet Plateau is almost unaffected because of its high altitude, and the Kunlun Mountain, Altun Mountain and Qilian Mountain in the north can stop the cold air mass from going south.

The main cause of wind formation (whether it is summer monsoon or winter monsoon)

The main reason is the air pressure difference: that is, due to the high and low temperature, there are air pressure differences in different geographical locations, high air pressure in cold air and low air pressure in hot air. Then the airflow flows from the place with high pressure to the place with low pressure, which forms the wind.

The so-called winter wind belongs to seasonal airflow. Another point is that the specific heat capacity of the land is less than the sea level, so the relative sea level temperature is lower in winter, so the air flowing from the mainland to the ocean is formed. Influenced by latitude and land and sea location, the prevailing wind direction in most parts of China changes significantly with the seasons in a year, forming a typical monsoon climate.