The climate characteristics and influence of Jinan (housing characteristics, fruits, vegetation, food, clothing, housing and transportation, etc.). )

The annual average temperature in Jinan is 14.7℃, the annual average precipitation is 67 1. 1mm, and the annual sunshine hours are 26 16.8 hours. Leng Yue is 1 month, and the monthly average temperature is -0.4℃. The hottest month is July, and the monthly average temperature is 27.5℃, which is extremely low. The extreme maximum temperature is 40.5℃, which appeared on1June 23, 997. Frost generally starts around the middle of 10, and ends from late March to early April of the following year. The frost-free period of the year is 235 days. The dominant wind direction is southwest and northeast, followed by east, north and south, and at least northwest wind. The main meteorological disasters are

Jinan belongs to a warm temperate climate zone. Due to the geographical location, a continental monsoon climate is formed, with four distinct seasons. Winter is controlled by polar or polar deformed continental air masses, and is constantly attacked by dry and cold air masses from Siberia. The northwest, north and northeast winds prevail, resulting in dry and cold weather, abundant sunshine and little precipitation in winter. Tropical and subtropical marine air masses dominate in summer, and northwest monsoon forms in winter. Therefore, southwest wind, southwest wind and southeast wind prevail, resulting in hot and humid weather, concentrated rainfall and frequent thunderstorms in summer. Spring and autumn are the transitional seasons between winter monsoon and summer monsoon, and the wind direction is changeable. Because the wind changes obviously with the seasons, it forms the climate characteristics of Leng Xia in winter and uneven rainfall in four seasons.

The four seasons climate in Jinan is characterized by dry and windy spring, hot and rainy summer, cool autumn weather and long dry and cold winter. In spring (March-May), the temperature rises quickly, the daily range is large, the weather is dry, the wind and rain are heavy, the precipitation is small, the evaporation is large, the soil moisture is lost quickly, and the spring drought is serious. The average daily interval in spring is 10-65438. It is the month with the largest average wind speed in the whole year. The gale in spring accounts for about 56% of the gale days above magnitude 8. The precipitation in spring is generally about 90mm, accounting for only about 14% of the annual precipitation. Summer (June-August): It is hot in summer, with an average temperature of 26.7℃. This season is not only hot and rainy, but also has the characteristics of rainy and hot seasons. The average precipitation in summer is about 450 mm, and the average precipitation days in July alone are about 15 days. The rainstorm days with daily precipitation greater than or equal to 50 mm are concentrated in July and August, accounting for about 65% of the annual rainstorm days. In early summer, droughts often occur due to high temperature, strong wind and low humidity. In autumn (September-165438+1October), the rainy season basically ends, and the westerly belt at high altitude gradually strengthens southward. The weather is short, the wind speed is weak, the clouds are few, the visibility is excellent, the weather is stable and sunny, and the weather is sunny in autumn. The average temperature in autumn is 15.5℃, and the average precipitation is 105. 1 mm, but too little rainfall will cause autumn drought. In winter (12- the following year), the average temperature in winter is about 1℃, the maximum frozen soil depth is 42 cm, the maximum snow depth is 22 cm, and the winter precipitation is about 20mm, accounting for only 3% of the annual precipitation. The whole winter is rainy, snowy, dry and cold.