Why is there relatively more rain in the south and less rain in the north?

first of all, it has something to do with geographical location. In low latitudes, especially in direct sunlight, solar energy will drive the water circulation system faster. Thus, the circulation of ocean and land water is accelerated, and the ocean water is transported to the land and then merged into the ocean from the land. On the whole, the water area is large.

secondly, it is related to monsoon. This is also an integral part of the water cycle. We all know that all kinds of potential energy flow from high places to low places in dynamics, and wind is no exception. Sufficient solar energy in low latitudes will cause hot air to rise, thus forming a low-pressure area, and high latitudes will easily form a high-pressure area. The air circulation between the low-pressure area and the high-pressure area will form wind. The summer monsoon is full of water vapor, which is often beneficial to the southeast coastal areas, and the farther inland to the northwest, the less it can be taken care of. This is the result of the combination of monsoon and geographical factors.

In addition, the long-term evolution process has resulted in the abundant vegetation in the lakes and rivers in the south, with high coverage, while the topography in the north is small and the surface is exposed. From the local microclimate differences caused by different water storage and environment, the water vapor is abundant in areas with high vegetation coverage and large lake evaporation, while the precipitation in the north is relatively small.

above. Please advise if there is any bias

The south is near the sea, and the coastal cities are densely populated and it is easy to produce steam, so there will be more rain!

The amount and distribution of precipitation in a region mainly consider the source of water vapor in the region. China is located in the west coast of the eastern Pacific Ocean in Eurasia, with significant differences in thermal properties between land and sea, forming an obvious monsoon circulation. The precipitation in China is mainly the Pacific water vapor brought by the southeast monsoon in summer, so the regional distribution of annual precipitation in China is "decreasing from southeast to northwest", which means "more in the south and less in the north" from the perspective of north and south.

According to the distribution map of annual precipitation in China, the first line of Qinling and Huaihe River is the dividing line of annual precipitation of 8 mm in China. The farther south, the greater the annual precipitation, and the place with the most precipitation is located in Huoshaoliao, Taiwan Province Island, with an astonishing annual precipitation of 8,44 mm, while the annual precipitation to the north of Qinling and Huaihe River gradually decreases, and the annual precipitation in some areas of Inner Mongolia is less than 2 mm. The difference between the north and the south is also reflected in the length of the rainy season. The rainy season is long in the south and short in the north.

There are many rains in the south and few rains in the north of China, which naturally have the following reasons:

The climate in the north of China is mainly temperate monsoon, such as Beijing, where 55ml of precipitation is mainly concentrated in late July to early August. At this time, the rainstorm is concentrated and the river water level rises, so there is a serious spring drought and heavy rain in summer. This situation is very common in the north.

The climate in the south is much more complicated, including subtropical, tropical monsoon climate and temperate monsoon climate. Summer is also hot and rainy, but the rainfall is often more than that in the north. Extreme single-day precipitation in some places in the south can reach or even exceed the annual precipitation in some places in the north.

The most important thing is that although winter in the south is dry, it is much better than that in the north. Snow, sleet and rain will drop from time to time, so there is no obvious dry season in the climate.

there are few water systems in the north and many in the south. There are many rivers in the south, and the coastline is long, so the moon comes first near the water tower, so the precipitation in China shows a pattern of less in the north and more in the south, less in the west and more in the east.

because of geography and climate, there are many rivers, lakes and seas in the south, and the north has always been relatively dry!

the climate formed in the last 15 years. Not before.

in recent years, there has been a lot of rain in the south, but too little rain in the north, which is caused by the general environment and climate.

the climate in the south is humid and abundant, especially in the coastal areas. Rice is mainly planted in rural and mountainous areas, and the groundwater vein is also very shallow, and a large amount of water vapor evaporates, so there is a lot of rain.

however, in the north, the river is dry for years. Agricultural planting, mainly based on groundwater irrigation, coupled with a large number of industrial exploitation, groundwater is getting deeper and deeper, and water vapor evaporation is less, resulting in a vicious circle. So there is less and less rain.

Because there is a vast water source near the sea in the south, the air convection humidity is high, there are many plants, and there is a lot of water vapor and rainfall. In the north, however, there is less water in the stream, and the higher the temperature, the more air pressure, the less cloud cover, the less air humidity and the less rainfall.

I just read a comment that there are four distinct seasons in the north? Joke! The climate in the north is dry and there are relatively few green plants, especially in winter! The climate in the south is humid, and green is a beautiful scenery all year round!

The rainfall distribution in the north and south of China is uneven, with more rainfall in the southeast coast and less rainfall in the northwest inland. For example, the average annual rainfall days in Fuzhou are 16? 18 days, the rainfall is 16 mm? Between 18 mm; In Yinchuan, which is located in the northwest, the average rainfall days are only over 4 days, and the rainfall is only about 2 mm.

The average annual rainfall in Taiwan Province is more than 6,5 millimeters, which is called the "rain pole" of China. Turpan basin in Xinjiang is very dry, with an average annual rainfall of only a dozen millimeters, which is one of the dry and rainless areas in the world. The reason why there is more rain in the south and less rain in the north in China is first determined by geographical location.

according to the geographical latitude, the earth is divided into five climatic zones: tropical zone, south (north) temperate zone and south (north) frigid zone. The tropical climate is hot and humid, with a lot of rainfall; And from the temperate zone to the cold zone, the rain gradually decreases, and there is little rain in drought. China's north-south border spans a wide latitude. The south is located in the tropics and subtropics, so there is more natural rain and water. The north is located in the temperate zone and close to the inland, so there is less rainfall.

There is another important reason why there is less rain in the north and more rain in the south of China: monsoon prevails in China. In summer, the southeast monsoon continuously transports the water vapor from the ocean to the land. When warm and humid air meets cold air, it will soon rain heavily and rainstorm in the southeast. Then, the rain belt moved slowly to the north, and it rained all the way, and the water vapor became less and less. In the arid north, the rainfall was very small.

In winter, the dry and cold northwest wind prevails in the north of China, and only when the strong warm and humid airflow blows from high altitude to the north will it snow. Based on these reasons, the situation of more rain in the south and less rain in the north has been formed.