East Asian monsoon is an important part of Asian monsoon, and its movement and change affect the weather and climate in China. East Asian monsoon is caused by the difference of thermal properties between land and sea.

In summer, the land temperature is high, forming a low pressure, and the summer monsoon blows from the subtropical ocean to the land (southerly wind); In winter, the cold land forms high pressure, so the winter wind blows from the high latitude mainland to the ocean (northerly wind), and the winter wind is strong. The main reason is the difference of thermal properties between land and sea. Its scope includes eastern China, Korean Peninsula, Japanese and other regions.

Overview:

East Asian monsoon is an important part of Asian monsoon, and its movement and change affect the weather and climate in China. The surface monsoon in East Asia is second only to the South Asian monsoon and the Southeast Asian summer monsoon, and its scope generally includes eastern China, Korean Peninsula, Japanese and other regions. In winter, the mainland is occupied by cold high pressure, and the northerly wind at the front of high pressure becomes the winter wind in eastern Asia.

The location of cold high pressure varies from place to place, and the prevailing wind direction is also different.

North China and Japan are generally northwest winds, while Central China and South China are northeast winds. In summer, the Asian continent is controlled by the heating depression, and at the same time, the Pacific high extends westward and northward, resulting in a southerly wind system blowing from the ocean to the mainland, that is, East Asia and summer monsoon. The causes of East Asian monsoon and South Asian monsoon are different, and the weather and climate characteristics are also different. For example, when winter winds prevail, the climate in East Asia is characterized by low temperature, dryness and little rain. When the summer monsoon prevails, the weather is hot, humid and rainy.