Climatic characteristics of Fujian, Quanzhou and Jinjiang

Quanzhou is located in the low latitude, adjacent to the Taiwan Province Strait in the east, with a subtropical maritime monsoon climate, superior climatic conditions and abundant climatic resources, which provide a good environment for people's life and economic development. Quanzhou has a subtropical maritime monsoon climate, facing the mountains and the sea. "There are flowers in four seasons, no snow in one winter, but thunder." (Poems about Quanzhou sung by Tang people) vividly illustrates the climate characteristics of Quanzhou; The winter here is very short, and there is no severe cold. The annual average temperature is 18-20℃, the frost-free period is more than 3 10 days, the annual rainfall is 1000- 1800mm, and the annual average sunshine is 1900-2000 hours. Therefore, Quanzhou can travel all year round, and the best tourist season is generally every year. The basic trend of temperature change in spring is warming up, but there are rises and falls, and the process is frequent and large. Sometimes the daily fluctuation can reach above 10℃, and in some years, after the end of March, there will still be "late spring cold" weather with the daily average temperature below 12℃ for more than three consecutive days. Summer is very hot, but there are not many really hot summers. The temperature in high altitude and coastal areas is relatively low, and typhoons and thunderstorms are two main weather processes to alleviate the high temperature. The temperature drops quickly in autumn. The "autumn cold" in which the average temperature is lower than 20℃ for more than three consecutive days generally occurs in the middle of June from 65438+1October (Zhongshan area) to1early October165438+1October (coastal area), but it still occurs in Koharu, and the daily range is also different. It is warm in most areas in winter, and it is cold in high-altitude mountainous areas. The hottest month in most parts of Quanzhou is July, and the hottest month in Leng Yue is 1. Coastal areas are regulated by the ocean, and the temperature changes lag behind. The hottest month is August, and the hottest month is February in Leng Yue. In the process of changing from cold to hot, the temperature rise is the largest in March and April, and the cumulative temperature rise is 8℃ within two months. In the process of changing from hot to cold, the biggest drop occurred in 1 1 and 65438+February from autumn to winter, with a cumulative drop of 8.5℃ in two months. February and August have the smallest fluctuation range, within 0.5℃. The process from cold to warm, and from warm to cold starts from inland, and coastal areas lag behind. Quanzhou is a typical monsoon region. In winter, northerly winds prevail, and the wind direction rotates clockwise from the coast to the inland. In summer, southerly winds prevail, and the wind direction rotates counterclockwise from the coast to the inland. From the representative stations in coastal areas, the frequency of northeast wind is the largest, followed by southwest wind, and the frequency of other wind directions is smaller. The wind direction in coastal areas is also influenced by the sea-land phoenix, which can deflect the wind direction and enhance or weaken the wind. In winter, the sea-land wind deflects clockwise in the morning and counterclockwise in the afternoon. In summer, the sea-land breeze deflects the wind counterclockwise in the morning and clockwise in the afternoon. This deflection occurs at 7-9 o'clock in summer, 19-2 1, and the delay in winter is about 2 hours. The coastal areas of Hui 'an County, Licheng District, Jinjiang County, shishi city and Nan 'an County are the high-value areas of Quanzhou's annual average wind speed, which are rich in wind energy resources and are conducive to the spread of air pollution. The average wind speed decreases rapidly from the coast to the inland. By the time Nan 'an came to the city, the annual average wind speed was almost the same as that of Anxi and Yongchun. In a year, the average wind power in coastal areas is relatively large in autumn and winter, relatively small in spring and summer, and the average wind power in inland areas is not much different.