What are the common natural disasters in Qingyuan?

The rainy season in Qingyuan, Guangdong Province is June and July every year. In the rainy season, the air humidity is high and the temperature is high, so clothes are easy to get moldy, so some people call the rainy season "moldy rain". Meiyu mainly occurs in the middle and lower reaches of the Yangtze River in China, Taiwan Province Province in China, Liaodong Peninsula, the southernmost tip of the Korean Peninsula and the subtropical monsoon climate zone in south-central Japan. There is no plum rain in other parts of the world at the same latitude. There is no obvious plum rain in South China. Every year from late April to early May, cold air from the north and warm air from the south meet in South China, forming a quasi-static front in South China.

Around the end of May, the influence of warm air increased, and the quasi-static front moved northward to the Jianghuai area, becoming a quasi-static front in the Jianghuai area. Because the warm air from the south carries a lot of water vapor, when it meets the cold air mass, it will produce a lot of convection activities. Because of the equal influence of cold and warm air during this period, the front stays in Jianghuai area.

Climatic characteristics of Qingyuan, Guangdong Province

Qingyuan, Guangdong Province belongs to the East Asian monsoon region, with subtropical monsoon climate, subtropical monsoon climate and tropical monsoon climate in turn from north to south. The climate is characterized by long summer and warm winter, abundant rainfall, long rainy season, frequent typhoons and rainstorms in summer and autumn, invasion of cold air in winter and spring, and occasional extreme cold. It is one of the areas with the richest light, heat and water resources in China.

From north to south, the average annual sunshine hours increased from less than 1500 hours to more than 2,300 hours, and the average annual sunshine hours in the whole province were 1745.8 hours.

Except for mountainous areas in northern Guangdong, the average annual temperature in most areas is between 20℃ and 22℃. If the average temperature for five consecutive days is ≧22℃ as summer, there are five months in northern Guangdong, six months in central Guangdong and seven months in southwestern Guangdong. Although the summer in Qingyuan, Guangdong is long, there is no heat. In winter, the average temperature in June 65438+ 10 is above 10℃.

There is abundant rainfall, which is obvious in dry season and rainy season. The annual precipitation days are 175-225 days, and the average annual precipitation is between 1300-2500mm. There are three precipitation centers, located in Enping and Yangjiang at the southern foot of Wuyun Mountain, Puning and Haifeng at the southern side of Lianhua Mountain, Qingyuan and Fogang at the southern part of Huashi Mountain, and Yapoji Mountain. The seasonal distribution of precipitation is uneven, and the precipitation from April to September accounts for more than 80% of the whole year.

Wind energy resources are better. The prevailing wind direction in coastal areas throughout the year is mainly easterly wind, while that in other areas is mainly northerly wind. Coastal areas and offshore islands are more abundant in wind energy resources due to the influence of ocean energy and land-sea thermal power. The annual average effective wind energy density of Nan 'ao Island, Pearl River Mouth Island and Xiachuan Island exceeds 1.20 W/m2, and the cumulative hours of effective wind speed exceed 5,000 hours, with an average of 1.5 hours per day.

Guangdong is one of the provinces with the most meteorological disasters in China. Floods and droughts occur from time to time, and typhoons are more frequent. Low temperature and rainy weather in spring, cold dew wind in autumn and cold wave frost from late autumn to early spring are also frequent disastrous weather in Guangdong.