Weather phenomena in Qinhuangdao, Shenyang
In this year, it is characterized by little rain, drought and continuous warm weather. The seasonal characteristics of temperature change are more prominent. The temperature rises rapidly in spring, hot in summer and cold in winter. The annual average temperature is Qinglong 9.8. C, Changli 1 1.7. C, other counties are between the two, 0.2- 1.3 higher than normal. C. Annual extreme minimum temperature -27.3. C (Qinglong). The annual extreme minimum temperature is 39.0. C (Qinglong), the annual temperature in Qinglong is 37.8 degrees. C, other counties 35.0-37.0. C, 4.0-5.0 higher than normal. C.
1999-2000 shows obvious winter cold. The average temperature of 65438+ 10 is not needed. Most counties are below MINUS 8 degrees. C is close to the lowest value of historical data. From March to September, the average temperature was higher than normal for seven consecutive months. The average temperature in Changli, Funing, Lulong and Qinglong in June is 24.0. Above c, the average temperature in July is 27.0. Above c, all reached the highest value in the same period in history. ≥35。 The hot weather in C, except Beidaihe, is above 13 days. July 12- 14 was affected by the warm and high pressure in the mainland, and the highest temperature in most parts of the city reached 38-39. C. The frost-free period in Qinglong is 158 days, and that in other counties is 184 days. The first frost appeared in June+10/October 65438+February; At the beginning and end of April, the final frost can be seen in the south of the Great Wall, and it will end on May 6 in the north of the Great Wall.
The annual precipitation in Changli is about 420 mm, and that in other counties is 500-600 mm, which is about 30% less than normal. This is a year of severe drought. There is more snow in winter, less rain and snow in winter and early spring, rain in spring sowing and generally no rain in early May. It is sunny and hot in summer. The precipitation in June is only about 20% of normal, and the total rainfall in June and July is less than half of normal. By mid-July, the rainy, sunny and hot weather lasted for 60 days, the water storage capacity of each reservoir dropped sharply, and the city's industrial and urban domestic water was in short supply. On the night of July 15, there was a general rainstorm in our city, and the drought was alleviated. At the beginning and end of August, there was another rainstorm in our city. The daily rainstorm in Beidaihe and Lulong exceeded 100 mm, with little rain and snow in late autumn and early winter, and the soil moisture in farmland was still insufficient.
There are three hailstorms this year. On May 18, local hail fell in Qinglong, causing general disasters. On the afternoon of June 8, 8 townships including Tumenzi and Shuangshanzi in Qinglong Manchu Autonomous County suffered from wind and hail disasters. In addition, on July 3 1 day, local hail fell in Shanhaiguan and Funing. There are many days of snowfall in winter, and the maximum snow depth is 8 cm (Qinglong).
The sunshine hours in the whole year are 2600-3000 hours, and the sunshine percentage is 68% in Changli and 60% in other places. The annual evaporation is 1450- 1920mm. The annual average relative humidity is between 60% and 66%. There are many foggy days throughout the year, including 23 days in Lulong, 0/3 days in Beidaihe/Kloc and 5- 10 days in other places.
The annual average wind speed is 1.5-2.5 m/s, with more winds from west to southwest. The windy days are Changli 16 days, and other counties are 2-6 days, with the maximum wind speed 17.3m/s (Funing, northwest wind). The maximum frozen soil depth is 89 cm in Qinglong, about 55 cm in other counties.