Why is it so hot this year?

This large area of high temperature is due to the stable subtropical high. Xie Yijun explained that the subtropical high is a huge warm and high pressure system, just like a huge quilt covering the sky. The typical weather feature is sultry sauna. It's sunny during the day, but it's windy and humid at night, so it's difficult to dissipate heat.

Characteristics of hot weather

This round of hot weather lasts for a long time. Changsha and other places may achieve high temperature attendance this week, with high temperature intensity and strong thermal endurance. Not only the temperature is high during the day, but also at night. I stay in the oven during the day and steam at night. Friends must be prepared for a long-term high-temperature war. Pay attention to heatstroke prevention and cooling.

This temperature fluctuation has become a normal climate, and there are two main culprits. One is the natural fluctuation and seasonal difference of temperature, and the intensity of temperature change in spring in Hunan ranks first among the four seasons. The other is that global warming leads to increased climate instability, more intense temperature fluctuations and more frequent high-temperature heat waves.