Why is Beijing colder than Guangzhou in winter and hotter than Guangzhou in summer?
1, hot and rainy in summer, cold and dry in winter and short in spring and autumn.
2. The frost-free period of the whole year is 180 ~ 200 days, which is shorter in western mountainous areas.
3. The seasonal distribution of precipitation is uneven. 80% of the annual precipitation is concentrated in June, July and August in summer, and there are heavy rains in July and August.
4. The annual average sunshine hours are between 2000 and 2800 hours. The maximum value is over 2800 hours in Yanqing County and Gubeikou, and the minimum value is distributed in Xiayunling and Rizhao for 2063 hours.
Extended data In summer (June-August), the temperature in Beijing is high, the precipitation is high, the sunshine is normal, the disasters such as rainstorm, flood, gale and hail are more prominent, and the overall climatic conditions have a normal impact on Beijing's ecological environment. The precipitation in summer is 33% higher than normal, which is the highest since 1999. * * There have been five heavy rainfall weather processes, in which the daily precipitation of some stations of "6.22" rainstorm and "7.6" rainstorm exceeded the historical extreme value in the same period. The "6.22" rainstorm affected 8594 people in the city, resulting in a direct economic loss of 3.22 million.
Strong convective weather caused agricultural direct economic losses of 65.438+0.28 billion yuan in Fangshan, Yanqing, Fengtai and Pinggu. Because the precipitation is obviously too much, it is very beneficial to the reservoir water storage. Satellite remote sensing monitoring shows that the water area of Miyun Reservoir in Beijing was about 126.4 square kilometers on August 24th, 2007, reaching the maximum value of nearly 17.
In the summer of 20 17, the number of high temperature days in Beijing Observatory was 19, which was significantly higher than that in the same period of normal years. Among them, from June 14 to June 19, Beijing experienced high temperature weather for six consecutive days, and from July 9 to June 13, it experienced continuous high temperature weather, which was affected by continuous high temperature.