Climatic characteristics of Taizhou Islands

According to the data at the top of Wuhushan Mountain in Xiadachen 1959- 1990, the annual average temperature is 16.7℃. The average temperature in the hottest month is 26.7℃, which appears in August, and the average temperature in Leng Yue is 6.9℃, which appears in February. The extreme maximum temperature is 33.8℃ and the extreme minimum temperature is -5.7℃. The annual sunshine hours are 1950.8 hours, and the annual average relative humidity is 83%. The annual precipitation 1387.5mm, and the maximum daily precipitation is 27 1.7mm, which occurs in September. The annual rainstorm days are 4.6 days. The annual average wind speed is 6.8m/s and the maximum wind speed is 37.0m/s; The wind direction is northerly, appearing in September, with the maximum wind speed of 45.9 m/s; The wind goes north and appears in September. The annual maximum wind direction is NNE, and the annual average number of windy days above magnitude 6 is 14 1.9. The annual effective wind energy is about 3,368 kW h/㎡, and the annual effective wind energy hours are about 7600h·h h. The annual average foggy days are 70.9 days, and the foggy period is from March to June, accounting for 7 1.5% of the total foggy days. 1May 1990, a sea fog lasted 60.3 hours ... The precipitation season changed greatly, and the precipitation from mid-July to February accounted for 53% of the annual precipitation, which was prone to summer drought, autumn drought and winter drought. In 1967, the annual precipitation was only 846.3mm, and in 7- 10, the precipitation was only 74.2 mm In 1949- 1990, two typhoons landed through the islands, among which Typhoon No.5207 landed between Huangyan and Wenling. Typhoon 90 15 landed in Jiaojiang. Typhoon 74 13 showed that the extreme values of daily precipitation and process precipitation in the islands were 230mm and 39 1 mm, respectively.