extreme weather
In summer, many people's first impression is that it is extremely hot and ridiculously hot. Now it has passed the mid-range, but the temperature values in Shaanxi, Sichuan, Chongqing, Jiangsu, Zhejiang and other places are relatively high, reaching historical extremes. It is mainly because these places are affected by responsible high pressure and heat waves, and the weather changes greatly. Chongqing is particularly hot, and the summer temperature has set a new local record. Judging from the average temperature record, the lowest temperature record, and the record of days of continuous weather above 40℃, the recent high temperature record may also be broken.
Hangzhou has also experienced sustained high temperatures. Since July 20, the number of days of continuous high temperature has reached 27 days, which also broke the previous record of continuous high temperature of 26 days. Moreover, there will still be high-temperature attendance in the local area, and there will be new records every day. Through the observation of the global high temperature network, if there is no 43℃, it will not be able to squeeze into the previous 10 temperature, and the high temperature is also very tired. In many places, the temperature has broken records, or dropped.
Why this year is so weak is mainly due to the influence of subtropical high. According to the relevant news of the Meteorological Observatory, it is found that this year's high temperature weather is related to the abnormal atmospheric circulation. It can be seen from the monitoring that the western Pacific subtropical high has a large influence range and strong intensity. Through this control, downdraft appeared in some areas in the south, and the sky was clear and cloudy, because the radiation had a great influence during the day, and there was more hot air near the ground, which would lead to a wide range of high temperature. The reason why the subtropical high is so strong is also related to the abnormal weather, so we should pay attention to heatstroke prevention and cooling this summer.