Characteristic climate of Anshan High-tech Zone

Anshan High-tech Zone is located at the southeast edge of Songliao Plain in mid-latitude, and belongs to the continental monsoon climate zone in warm temperate zone. The main climatic characteristics are: four distinct seasons, rain and heat in the same period, dry and cold in the same season, abundant precipitation, suitable temperature and sufficient sunshine, and disastrous weather such as gale, hail, drought, flood and frost occurs in different degrees in different years and seasons.

In spring (March-May), there are many strong winds, less precipitation, long sunshine, quick recovery, large evaporation and low humidity. In summer (June-August), precipitation is concentrated, and heavy rain mostly occurs in this season, with high temperature and less heat; In autumn (September ~165438+1October), the weather is refreshing, the rainfall drops sharply, and the temperature drops sharply; Winter (l2 ~ June) is dry and cold, with less snowfall and more northerly winds.

Although the area under the jurisdiction of Anshan belongs to the same climate zone, there are differences due to different geographical environments (topography, landforms, distance from the sea). The annual precipitation is 640 ~ 880mm, which gradually decreases from southeast to northwest. The average annual temperature in the plain is 8.0℃~9.0℃, and the average annual temperature in the eastern and southeastern mountainous areas is 6.3℃ ~ 7.0℃. The sunshine hours average 2350~2700 hours in several years, and the northwest is more than the southeast.

High temperature In 2004, the general climate characteristics of Anshan City were: high temperature, less precipitation and less sunshine than normal. Among them, the average annual temperature in Anshan is 1 1.3℃, which is higher than the previous year's 9.6℃ 1.7℃. The annual average temperature in Haicheng is 9.9℃, which is 65438 0℃ higher than that in previous years. The annual average temperature in taian county is 9.8℃, and that in Xiuyan County is 9.65438 0℃, both higher than the historical period1.65438 0℃. The extreme maximum temperatures in different places are: 36.4℃ in Anshan City, 35. 1℃ in Haicheng City, 35.4℃ in taian county City and 36.8℃ in Xiuyan County, all of which appear in June 10. The extreme minimum temperatures in various places are: 22℃ below zero in Anshan, appearing at 65438+1October 2 1, 27.2℃ below zero in Haicheng, 22.9℃ below zero in taian county and 22.6℃ below zero in Xiuyan. The number of last frost days in each place is: Anshan and taian county appeared on April 9, which was l6 days and 19 days earlier than in previous years; The final frost period in Haicheng City and Xiuyan County appeared on April 15, which was 6 days and 7 days earlier than previous years, respectively. The date of the first frost is 10 year122 October in Anshan, which is 9 days later than in previous years. The first frost dates in other areas all appeared on June 2nd 10. Among them, the first frost date in Haicheng is close to the calendar year, the first frost date in taian county is 4 days earlier than the calendar year, and the first frost date in Xiuyan County is 3 days later than the calendar year.

Uneven distribution of precipitation In 2004, there was less precipitation in all parts of Anshan, and the annual precipitation in all parts was: 6 18 mm in Anshan, which was 92mm； less than the average over the years; Haicheng is 478 mm, 223 mm less than the average over the years; The annual precipitation in taian county is 566 mm, 78 mm less than the average of previous years. The annual precipitation in Xiuyan County is 704 mm, which is less than the average over the years 1l4 mm. The total number of rainy days in urban areas in the whole year was 87 days, which was 4 days less than the average of 9 1 day in previous years and 3 days more than that in 2003. The number of snowfall days is 22 days, which is more than the average of 2 1 day in previous years 1 day and 6 days less than that in 2003. There are only two strong winds in the urban area throughout the year, and the maximum wind speed is 24 m/s, which is obviously less than in previous years. There is no obvious dusty weather in the city, and the thunderstorm day is 2 1.