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during the day on september 29, the weather in central chongqing was much cooler than the previous few days. according to the chongqing meteorological observatory, chongqing will experience heavy cooling rainfall on the evening of september 29, and the temperature in most areas will drop rapidly by 10-14°c.

after this cooling, will there be hot weather again in chongqing? will chongqing’s long summer end this year? upstream news reporters interviewed tang hongyu, chief engineer of the chongqing climate center, on related issues.

chongqing’s hot weather will end this year

tang hongyu said that based on the current analysis of relevant data, after this strong cooling, the hot weather in chongqing will end this year. after the national day holiday, autumn will begin in various places in chongqing.

this summer, the overall temperature in chongqing is relatively high, the temperature is severe, and the precipitation is relatively low. the city's average temperature in summer is 27.6°c, which is 1.0°c higher than the same period in normal years (26.6°c).

the city has an average of 5 days with high temperatures above 40°c, the third most since 1961. a total of 5 high-temperature weather processes occurred. among them, the high-temperature process that started on august 11 lasted until late september and reached the extremely severe level.

what's causing this year's extra-long summer?

tang hongyu introduced that according to meteorological standards, when the daily average temperature is above 22°c for the first time for 5 consecutive days in a certain place, the first day of these 5 days will be regarded as the beginning of summer in that place, and when the average temperature continues to be lower than 22°c it's the end of summer.

compared with previous years, chongqing has had significantly more high-temperature days this year, with an average of 56 days in the city, the most since 1961.

this year, due to the fact that the average temperature in most areas of chongqing from mid-april to late may is higher than normal, summer begins earlier than normal in most areas. however, the long-term high temperature weather from mid-august to september leads to the onset of summer in mid-september. the average temperature in the second half of the year is significantly higher, and the end of summer is later than normal, resulting in a longer summer.

will similar extreme weather become the norm in the future?

tang hongyu introduced that according to the results of multiple studies, including the results of numerical climate model simulations and projections, it is shown that under the background of global warming, the frequency and intensity of extreme weather and climate events will increase and intensify in the future, that is, said, "extreme weather and climate events do tend to become normal."

upstream news reporter shi heng