What is the reason for the continuous high temperature in the country this year?

He Lifu, chief forecaster of the Central Meteorological Observatory, specifically summarized the reasons for this large-scale continuous high temperature as follows:

First of all, the plum rains in the middle and lower reaches of the Yangtze River are shorter than in previous years, and plum blossoms appear earlier. Since the beginning of July, the subtropical high has been continuously controlling the middle and lower reaches of the Yangtze River. Influenced by downward flow, the weather turns sunny to cloudy, with strong solar radiation and high atmospheric humidity, and we will feel humid and sultry.

Secondly, the intensity of subtropical high is obviously stronger than that of the same period in history. Last year, the middle and lower reaches of the Yangtze River were still in the rainy season, but this year, due to the early plum blossom, the number of high temperature days was obviously higher, and the subtropical high was stronger, which led to the continuous rise of temperature, so Jiangnan became "Turpan". As far as temperature is concerned, Zhejiang is almost as hot as Turpan Basin in Xinjiang.

Another main cause of high temperature is the abnormality of atmospheric circulation. So far, there are few typhoons going northward and going inland. In previous years, because of the typhoon landing, the subtropical high will shrink and break under the influence of the typhoon, and the weather also presents a weather situation of hot for a while, typhoon for a while and cooling for a while. We call it intermittent hyperthermia. This year's typhoon affected the south, mainly in the Taiwan Province Strait and the South China Sea, causing the subtropical high to control the inland for a long time. Therefore, it is reasonable for the middle and lower reaches of the Yangtze River to suffer from high temperature for a long time.