The climate of Jincheng

Jincheng is located in the southeast of Shanxi Province, bordering Taihang Mountain in the east and Central Plains in the south. Its geographical coordinates are11155'-113 37' and 3512'-36 3' north latitude. Seen from the temperature zone, Jincheng is located in the warm temperate zone, with the annual average temperature 1 1.5℃, the highest temperature in Leng Yue -2.7℃ and the hottest month of 24. 1℃. Seen from the dry and wet areas, Jincheng is in a semi-humid area, with an average annual precipitation of 573.8 mm, which is unevenly distributed and concentrated in summer. The frost-free period is long, with an average annual frost-free period of 196.6 days. The sunshine in the whole year was 2303.5 hours, accounting for 52% of the sunshine hours. The annual average wind speed is 2.0m/s, and the maximum wind direction is south wind. Jincheng has a temperate monsoon climate, and its main climatic characteristics are: cold and dry in winter, concentrated precipitation in summer and short spring and autumn. The main meteorological disasters are: drought, rainstorm, hail and so on.

Spring is from March to May. In this season, the temperature rises rapidly, the temperature difference between day and night is remarkable, and the interannual change between cold and warm is also great. Due to the frequent cold air activities, it often causes "late spring cold" and late frost. At the same time, there is little precipitation this season, and the spring drought is more serious. Affected by strong winds, there are many sandstorms, and the number of windy days above magnitude 8 accounts for more than 36% of the whole year. There will be dry and hot winds affecting winter wheat in the middle and late May.

Summer is from June to August, with long sunshine time, high radiation intensity and high temperature. The seasonal average temperature is above 22℃, and the precipitation is relatively concentrated. Seasonal precipitation accounts for more than 55% of annual precipitation, and seasonal precipitation days account for about 40% of annual precipitation. Summer is greatly affected by subtropical high, and floods or droughts often occur. At the same time, thunderstorms, strong winds, hail and other strong convective weather occur frequently, which often causes losses to industrial and agricultural production.

Autumn is September-165438+ 10, with a sharp drop in rainfall, stable weather and pleasant climate. However, after autumn, the sunshine time is shortened, the radiation intensity is weakened and the temperature is obviously reduced. Cold waves often occur in late autumn, causing early frost and threatening the maturity of autumn crops. In 10 and 1 1 month, foggy weather often occurs, which has adverse effects on traffic and air quality.

Winter is 65438+February-February of the following year. Due to the control of high pressure, northwest wind prevails in the territory, cold air activities are frequent, the climate is cold and dry, it is sunny, and precipitation is scarce. Seasonal precipitation accounts for about 4% of the annual precipitation, and the average number of precipitation days is 1 1.2 days, and there is often no snowfall for more than one month.