, today is the Great Heat, which is the last solar term of summer among my country’s traditional twenty-four solar terms. The next solar term will usher in the beginning of autumn.Although this is the last summer solar term,But it means the hottest period of the year, and it is very prone to extreme high temperatures.
The Great Heat is around the middle of the dog days of summer, when the sun's altitude angle is large, the ground receives a lot of solar radiation, and heat continues to accumulate, causing the temperature to remain high.
According to the China Weather Network, Great Summer has the highest average temperature, the highest number of high temperature days, and the highest number of extreme high temperatures.Becoming the "Three Materials Champion" is a veritable "King of Heat".
In addition, this is also the period when rainfall in Northeast and North China is most concentrated in the year.
During the annual summer heat, typhoons in the South China Sea and the northwest Pacific are concentrated and land in my country.
Why is the Great Summer so hot?
Meteorological analysts said that after the summer solstice, although the direct sun point gradually moves southward, the surface heat is still accumulating until the heat accumulation reaches its peak around the time of the third volt, which is the period of great heat.
Especially for the southern region, before and after the Great Heat, it is often controlled by the western Pacific subtropical high pressure. Downdrafts prevail in the areas controlled by it, which is conducive to ground warming and is less likely to form clouds. It also makes it easier for solar radiation to reach the ground, causing the temperature to rise.