The Severe Cold Air which Affected Qingdao during the 2022 National Holiday of China

Under the background of global warming and climate change, the number of extreme weather is increasing, not only the extremely hot weather in summer but also record-breaking cold events. This paper uses synoptic maps and sounding graphs to analyze an unusual weather process of severe convection and sudden drop in temperature that happened in Qingdao between 2nd October 2022 and 4th October 2022. The weather process could be roughly divided into two parts. Before the cold front reached Qingdao, the precedent cold air came across with the strong west Pacific subtropical high and created severe convection like heavy rain, thunder, and lightning as well as strong wind, especially gusts, the characteristics resemble a typical summer severe convection. After the dusk of 3rd October 2022, the temperature began to fall rapidly, with the winds shifting to the north, this process is like a cold wave surging Qingdao in winter. The purpose of this paper is to study the impact of climate change on extreme weather using this weather event as an example. This study will help those concerned to better understand the evolution of weather events so that the necessary precautions can be taken to mitigate the damage they may cause to people, property and infrastructure.