What are the characteristics of monsoon climate along the southeast coast of China?

wind is an important form of atmospheric activity, and its wind direction changes almost in the opposite direction with the transformation of winter and summer. Zheng He, a famous navigator in Ming Dynasty, used the monsoon to go to the West for seven times.

There are many regions in the world with monsoon climate, but China, Japan, Korea, Indo-China Peninsula and Indian Peninsula in the east and south of Asia are the most remarkable.

the characteristics of monsoon climate in the valleys of the Qinghai-Tibet Plateau are firstly the change of wind direction. Winter winds blow from the mainland to the sea, and the weather is cold and dry; The summer monsoon blows from the ocean to the land, and the weather is hot and humid. In winter, the Xia Feng direction is nearly opposite, which is the most important feature. China is located in the southeast of the Eurasian continent, facing the Pacific Ocean. This land and sea distribution makes China a typical monsoon climate country.

Because the summer monsoon comes from the ocean, the humid air mass is easy to form clouds and cause rain, so the closer to the ocean, the stronger the humid air mass and the more precipitation. Away from the ocean inland, the rainfall is scarce, and the start time of precipitation gradually pushes inland from the coast, and the end time of precipitation is just the opposite, which is the second feature.

Because tall mountains can block the movement of some clouds, the possibility of precipitation is great, especially on windward slopes. This is the third feature: the distribution of rainfall is more in mountains than in plains, and the windward slopes in mountains are more than in leeward slopes.

the fourth feature is that rainfall is concentrated in summer, accounting for more than half of the whole year. Because the summer monsoon comes from the ocean, there is a lot of rainfall; Winter winds come from the mainland, so there is less rainfall.

China, East Asia and South Asia are the most typical monsoon climate regions in the world. Besides the similar conditions with other monsoon regions, there is also the most important factor, which is the role of the "roof of the world"-the Qinghai-Tibet Plateau.

Due to the abundant rain brought by the wind in summer, it can meet the conditions of "rain and heat in the same period" for crop growth, which is beneficial to the growth of high-yield food crops such as rice. Therefore, South Asia, Southeast Asia, China, North Korea and Japan are all concentrated rice producing areas in the world. Of course, the change of summer monsoon and winter monsoon is not regular, fixed and equal in intensity, and there will be great changes in different years, which may lead to floods and droughts.