Why is Sichuan hotter than Guangdong this year?

The reason why Sichuan is hotter than Guangdong this year is mainly due to the influence of subtropical high. Since August, the subtropical high has been particularly "deep" and located in the northwest, which has "controlled" a large area including Sichuan for a long time. Under its control, Sichuan as a whole is under the control of downdraft, with clear skies and Wan Li and partly cloudy. During the day, under the influence of solar radiation, near-surface heating is relatively strong, so there is a wide range of high temperature weather. In addition, with the "joining" of North Africa-Iran high pressure this year, the weather characteristics in Sichuan Basin, which are basically affected by/kloc-0 and/or two high pressure systems every year, suddenly become more complicated and extreme, which is one of the reasons for the large-scale high temperature weather in Sichuan.

Meteorologists also pointed out that global warming is also one of the reasons for frequent high temperature weather. Global warming makes the summer temperature in Sichuan rise, increasing the frequency and duration of high temperature weather. At the same time, urbanization and industrialization will also aggravate the urban heat island effect, making the temperature in the urban center higher than that in the suburbs, further aggravating the severity of high temperature weather.

To sum up, this year's hotter Sichuan than Guangdong is mainly the result of the joint action of subtropical high and global warming.