Changes of weather and solar terms in Grain Rain and meteorology and solar terms in Grain Rain

Guide: When we look at the solar terms, we often see how the weather changes. The weather is closely related to our life. Understanding the weather characteristics of solar terms is to prepare for the change of weather, so as to avoid rain or high temperature, which we don't know and affect our lives. So, what's the weather like in Grain Rain? The following is the weather change of solar terms in Grain Rain brought by me. Let's have a look.

Solar Meteorology in Grain Rain

The main feature of the weather in Grain Rain is rainy, which is beneficial to grain growth. In Grain Rain season, in the south of China, "a hundred flowers blossom", willows fall, cuckoos cry at night, peonies bloom and cherries are ripe. The natural scenery tells people that it is late spring. At this time, the temperature rises rapidly. Grain Rain is the last solar term in spring. At this time, just after planting seedlings and planting new crops in the field, rain is most needed, so there is a saying that "spring rain is as expensive as oil". After the solar term in Grain Rain, the rainfall increased and the humidity in the air gradually increased.

In ancient China, Grain Rain was divided into three stages: "The first stage was when Ping was born; The second time, pigeons blow feathers; The third is that Dai Sheng fell to Sang. " After Grain Rain, rainfall increased, duckweed began to grow, then cuckoo began to remind people to sow, and then Dai Sheng birds began to be seen on mulberry trees.

Weather changes of solar terms in Grain Rain.

1, sandstorm

According to the 24 solar terms, Grain Rain is the last solar term in spring. Grain Rain in late spring means that spring will end and summer will come. The large-scale invasion of cold air into the south is rare, but the cold air activities affecting the north will not stop.

From the end of April to the beginning of May, the temperature is much higher than that in March, and the soil is dry and loose. The air layer is unstable, the high-altitude wind drops, the frontal cyclone is active, and the windy and dusty weather caused by * * * is more common.

During Grain Rain 1993, 1995, 1998 and 2005, there were strong sandstorms and sandstorms. Among them, the black wind occurred in Jinchang, Gansu on May 5, 1993. The instantaneous maximum wind speed reaches 34m/s( 12), and the visibility drops sharply to zero. The sandstorm wall formed by aeolian sand is as high as 300-400 meters, and has a three-layer structure. Each layer has a spherical dust ball rolling, the bottom layer is black, and the middle and upper parts are red and yellow, once an hour. It caused heavy casualties and economic losses, and it is still creepy.

A wide range of floating dust weather, dark sky and falling yellow dust have made the poet's picture of grass growing and warblers flying, flowers red and green, and spring full.

2. Spring drought

Huaihe river basin is a transitional zone between the spring rain area in the south of the Yangtze River and the spring drought area in the north. From the north of the Huaihe River in Qinling Mountains, the spring rain dropped sharply.

As the saying goes, "There is always little rain in Qingming Grain Rain", which means that during these two solar terms, there is no rain. During Grain Rain, people in Hainan Island, western Sichuan, western Guangxi, northwest China and north China are more eager for rain. Generally speaking, there are many sunny days, strong sunshine, large evaporation, windy sand and dry air, so the rain is more expensive at this time. Winter wheat, rape and other overwintering crops need rain when they enter maturity. Millet, corn, sorghum, cotton and vegetables sown in spring also need rain to take root and grow sturdily in Miao Zhuang. At this time, it is equivalent to planting food when it rains!

If there is little snowfall in winter, it is easy to get dry. It is very important to take measures such as water-saving irrigation and artificial precipitation enhancement in areas with severe drought in September once every ten years.

Spring drought is also an accomplice of forest and grass fires, which can be said to be a key stage to strengthen forest fire monitoring and fire prevention propaganda in forest areas.

April to August is the peak of strong convective weather in a year.

3. Strong convective weather

Generally speaking, April to August is the peak period of strong convective weather in a year. In May, severe weather such as thunderstorms, hail, strong winds and tornadoes will increase significantly in many areas in the south. Lightning protection, hail suppression and wind protection are put on the agenda.

4. Heavy rain

In the middle and lower reaches of the Yangtze River and the south of the Yangtze River in China, it often begins to rain obviously, especially in South China. Once cold air meets warm and humid air, it often forms a long rainy day, and it has entered the first flood season of the year. Strong convective weather wrapped in clouds and rain will not only bring disasters such as hail and thunderstorm, but also be accompanied by short-term, local rainstorm or torrential rain. 24-hour rainfall can reach more than 300 or 400 mm, resulting in river flooding and serious waterlogging, and long-term heavy rain will also lead to mudslides, landslides and other disasters.

Changes of weather and temperature in Grain Rain

The temperature change in spring is also very interesting. Grain Rain is the sixth solar term among the 24 solar terms, and it is also the last solar term that marks spring. According to astronomy, the sun runs on the ecliptic in Grain Rain. When it reaches 30 degrees, it usually falls in April 19-2 1 every year. The festival time in Grain Rain this year is April 20th 17: 42. At this time, the crops in the field need rain to moisten them. There is a saying that "Spring rain is as expensive as oil". In ancient China, agriculture depended on the weather. Only when it rains can hundreds of valleys on the ground grow. At this time, there is more and more rain, and a bumper harvest is in sight. So it was named Grain Rain. According to meteorologists, Grain Rain is the last solar term in spring, and the arrival of Grain Rain solar term means that the cold wave weather is basically over and the temperature rises faster, which is very beneficial to the growth of cereal crops. So we can draw a conclusion that this time period is suitable for planting.

Changes of Weather and Temperature in Grain Rain 2

The temperature will be higher in the south. After the solar term in Grain Rain, rainfall increased, and rain gave birth to hundreds of valleys. With sufficient and timely rainfall, cereal crops thrive. At this time, the temperature in the south rises rapidly. Generally, in late April, except for parts of northern and western South China, the average temperature has reached 20℃ to 22℃, which is more than 2℃ higher than that in mid-April. High temperatures above 30℃ often occur in eastern South China for a day or two, which makes people feel very hot. Low-altitude valley areas are used to enter summer. The climate characteristics of high temperature in south China in spring are beneficial to the early cropping cultivation measures in Da Chun. The suitable planting temperature of Polygonum cuspidatum is 65438 08℃ to 22℃, which can be satisfied at this time. The experience in the old arid areas in southern China has proved that planting Osmunda japonica early in Grain Rain can seal vine leaves before summer drought, enhance drought resistance and achieve high and stable yield. You can wear short sleeves when you go out