What season is humid in northern China and what is the climate in northern China?

There is no plum rain in the north, and the plum rain is a special rainfall period in the middle and lower reaches of the Yangtze River in China. In the north, according to the season, the humidity should be summer and early spring... In the summer, from July to August, the rain belt stays in North China for a period of time, bringing a lot of precipitation to the north...

Therefore, in the year when the warm air is stronger, the summer rainfall in the north is concentrated and the rainfall is heavy... It is easy to cause flooding... There is little precipitation in spring and autumn in the north...

Little moisture... Although there is a lot of snow in winter... But the temperature is low, and most of the snowfall is piled up...

The snow melts mostly in early spring... Therefore, in early spring, there is a lot of moisture due to the melting snow.

Meiyu, also known as Huangmeitian, refers to the natural climate phenomenon of continuous cloudy weather and rain between mid-to-late June and the first half of July in the middle and lower reaches of the Yangtze River in China, Taiwan, south-central Japan, and southern Korea. Because the rainy season is the ripening period of plums in the south of the Yangtze River, the Chinese call this climatic phenomenon "plum rain", and this time is also called the "rainy season". During the rainy season, the air humidity is high, the temperature is high, and clothes are prone to mold, so some people call the rainy season "moldy rain" with the same sound.

After the rainy season, the weather in Central China, South China, Taiwan and other places begins to be dominated by the Pacific subtropical high, and officially enters the hot summer.

The northern part of China has a mainly temperate continental climate, and some areas have a plateau climate.

The temperate continental climate is mainly far from the ocean, and the humid air currents over the ocean are difficult to reach, and are controlled by continental air masses all year round.

Winters are cold and summers are warm. The annual temperature range is large, and the diurnal temperature range is also large. The coldest month occurs in January and the hottest month is in July, when spring temperatures are higher than autumn temperatures.

Precipitation is low and the seasons are unevenly distributed, concentrated in the summer. Precipitation varies widely from year to year. The northwest region of China belongs to the temperate continental climate.

Climatic causes

The temperate continental climate is mainly distributed in the inland areas of the Eurasian continent and the North American continent at 40° and 60° north latitude and the southern part of South America. Because it is far from the ocean, the humid climate is difficult to reach, so it is dry and rainless, the climate is extremely continental, and the annual and monthly temperature range is the highest among all climate types.

Moreover, the more we move towards the center of the continent, the drier it becomes, the greater the annual and diurnal differences in temperature, and the vegetation transitions from forests to grasslands and deserts. The climatic characteristics are: cold in winter and hot in summer, large annual temperature difference, concentrated precipitation, clear temperature changes in four seasons, less annual rainfall, and strong continentality.

The fundamental reason for the difference in temperature between the south and north of China is the difference in latitude. The northerners go to the south mainly because they feel that there is too much rain and it is inconvenient to move; Whereas southerners go to the north and feel dry and thirsty on their faces. I guess it has to do with the amount of humidity in the air, how much is the difference between the two?

The air humidity that people feel is expressed in relative humidity, which is 40-60% when people feel comfortable, can reach 90-100% when it rains, and the relative humidity when they feel dry and thirsty on the face is about less than 30%. Compared to the south, there is a difference of 20 degrees in humidity.

The south is basically wet, the humidity is generally seen in spring, and the north and northeast regions are dry in spring, so the wheat is planted, and the precipitation in the south is more in spring, which is rainy and rainy, the sun is not sufficient, and the water vapor can not evaporate in time.

The south is not humid all year round, generally in March is the return of spring and cold tide, more humid, this time I really don't like it, and it is very comfortable in other seasons.

It's just that the transition between spring and autumn is not very obvious, and it comes to summer and winter at once.

Along the coast, there is usually a wet rainy season in spring, and there is also a lot of rain in cities on the windward slopes.

Dali, Yunnan has four seasons like spring, there are mountains and rivers, there is no severe cold in winter, and there is no scorching heat in summer.

There are many places, such as Guangxi, Guangdong.

According to China's indoor air standards, it should be controlled at 30% and 60% in winter.

In summer, the indoor humidity is 40% to 80%, the indoor humidity suitable for the elderly and children is 45% to 50%, and the suitable indoor humidity for patients with respiratory diseases such as asthma is between 40% and 50%.

In the home environment, not only temperature and cleanliness, but also humidity is also an important indicator. In 2007, the National Institute for Occupational Safety and Health and the U.S. Centers for Disease Control and Prevention found that influenza viruses are infective due to high indoor humidity.