【Haichuan Teahouse】Will the high temperatures this summer become the norm in the future?

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As shown in the figure, this round of high temperatures has lasted for 64 days, the longest period since 1961. This summer (from June 1 to August 15), the average number of hot days across the country was 12, about 5 days more than the usual level for this time of year. In regions such as North China, East China, and Southwest China, the number of hot days is generally over 20 per year, while in places like Henan, Hubei, Anhui, Jiangsu, and Chongqing, this figure exceeds 30 days. As of August 15, this heatwave had lasted for 64 days, exceeding the previous record of 62 days set in 2013 and marking the longest duration since 1961. The daily maximum temperatures at 262 weather stations exceeded historical records. To date, 1,680 weather stations across the country have recorded temperatures above 35°C, while 1,426 stations have recorded temperatures above 37°C. All are the second-highest on record, second only to 2017. (For plotting purposes: 1,762 stations and 1,443 stations in 2017 respectively.) In addition, 914 **weather stations across the country experienced daily maximum temperatures that met the criteria for extreme heat events. In regions such as Hebei, Shaanxi, Sichuan, Hubei, Jiangsu, Zhejiang, Fujian, Guangdong, and Qinghai, 262 **weather stations saw their daily maximum temperatures reach or exceed historical extremes, which is more than the 187 stations in 2013 and 133 stations in 2017. The area affected by temperatures above 40°C in this round is the largest on record. Data shows that the extent of areas with temperatures over 40 degrees Celsius this time is the greatest ever, at 1.365 million square kilometers, far exceeding the 776,000 square kilometers recorded in 2013 and the 993,000 square kilometers recorded in 2017. Many of these cities set temperature records; for example, Zhushan in Hubei reached 44.6℃, Beibei and Fengjie in Chongqing reached 44.5℃ and 44.4℃ respectively, and Wuxi reached 44.0℃. In Hebei, Lingshou reached 44.2℃, Gaocheng reached 44.1℃, and Zhengding reached 44.0℃. In Yunnan, Yanjin reached 44.0℃. The highest daily temperatures in these cities all reached 44℃ or higher.