HomeSocialLast year, Zhejiang's climate was extremely changeable, "cold" and "hot" both broke...

Last year, Zhejiang’s climate was extremely changeable, “cold” and “hot” both broke records in recent

The 100-year average temperature (°C) and precipitation (mm) in Zhejiang Province have changed over the years.Photo provided by Zhejiang Provincial Meteorological Bureau

China News Service, Hangzhou, January 6th (Zhang Yuhuan) On the 6th, the Zhejiang Meteorological Bureau released the top ten weather and climate events in the province in 2022. The reporter learned that in 2022, the climate in the province will be extremely changeable, with uneven “cold” and “hot”. The monthly average temperature was the lowest in nearly 17 years.

High annual temperature and low precipitation were a major feature of Zhejiang’s climate last year. In 2022, the average temperature in Zhejiang Province will be 18.4°C, 0.8°C higher than normal, and the third highest in a century. The annual precipitation is 1395.3mm, which is 10% less than normal. The temporal and spatial distribution of precipitation is extremely uneven, with more concentrated in southwestern Zhejiang (Meiyu precipitation) and Ningbo (typhoon precipitation), and less precipitation in other areas.

At the same time, the province’s climate is extremely changeable throughout the year. There is a month-long rainy and snowy weather from late January to February, and there are 6 obvious rain and snow processes; “Nuo” and “Plum Blossom” affected the northeast region of Zhejiang; in December, hail, rain and snow flew together, and the average temperature was the lowest in the past 17 years.

High temperature is a test that Zhejiang must pass every year. In 2022, the average number of high-temperature days in Zhejiang Province will reach 53 days, breaking the historical record since records were kept. The province’s comprehensive high temperature intensity has reached the “hottest” year since observation records, and nearly 40% of the national weather stations’ highest temperature has broken the historical extreme value. Cases of heat stroke (severe heat stroke) have occurred in many places in Zhejiang Province.

Affected by the cold wave, there was rain and snow in Huanghu Town, Yuhang, Hangzhou.Photo courtesy of Huanghu Town

Affected by the cold wave, there was rain and snow in Huanghu Town, Yuhang, Hangzhou.Photo courtesy of Huanghu Town

Typhoon is another big test. In early and mid-September 2022, typhoons “Xuan Lannuo” and “Plum Blossom” successively affected Ningbo, Zhoushan, Jiaxing, Shaoxing and other places. Among them, “Xuan Lannuo” passed through the sea off the east of Zhejiang at a super typhoon level. Its path was complicated and rare, causing rainfall in 94 towns (streets) in Zhejiang to exceed 200 mm. “Plum Blossom” landed in Shenjiamen, Putuo District, Zhoushan at the level of a strong typhoon. During the process, 110 towns (streets) received more than 300 mm of rainfall.

Although the typhoon brought a certain amount of precipitation, the precipitation in Zhejiang during the flood season last year was relatively low, resulting in drought in summer and drought in autumn. From July 5 to November 27, Zhejiang suffered from a large-scale meteorological drought. The drought spread from the northern and eastern coastal areas of Zhejiang to the entire province of Zhejiang. The drought in southern Zhejiang was severe. The number of days of extreme drought in Wenzhou and Lishui exceeded 30 days. In order to effectively deal with the drought, Zhejiang carried out 1097 weather modification operations. At the beginning of November, the province organized the largest and most influential multi-sectoral artificial rainfall enhancement operation in the provinces, cities and counties over the years to help the Wenzhou area to fight the drought. The accumulated precipitation increased by 11.1103 million tons, and the drought in Wenzhou was effectively alleviated.

At the end of last year, Zhejiang ushered in another “super cold wave”. From November 28 to December 2, the cold wave weather affected Zhejiang from north to south, accompanied by thunderstorms, strong winds, hail and heavy snow. The 24-hour and 48-hour daily minimum temperatures in Zhejiang Province dropped by an average of 9°C and 12°C respectively, and the mountainous areas in northwestern Zhejiang continued to stay below 0°C for more than 60 hours; snow fell in most parts of northern Zhejiang. The cold wave covered an area of ​​89,000 square kilometers in Zhejiang Province. (Finish)

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