What factors affect Beijing's climate characteristics? Emergency, emergency, emergency.

The climate of Beijing belongs to temperate continental monsoon climate.

1, cold and dry in winter and hot and rainy in summer.

Beijing is located on the channel where the dry and cold air mass in the mainland moves to the southeast. From June to May of the following year, it was almost completely controlled by the dry and cold air mass from Siberia, and it was only affected by the warm and humid air mass from June to September for more than three months. So precipitation is mainly concentrated in summer, especially in July and August. Due to the influence of warm and humid air mass and dry and cold air mass, the annual precipitation changes greatly, and the rainfall in wet year and dry year is very different. The precipitation difference between the maximum year (1959 1406.0mm) and the minimum year (1869 242.0mm) is1164.0mm. Drought and flood often occur. According to the precipitation data recorded in 5 14, dry years and waterlogging years account for 65%. Due to the high concentration of precipitation, waterlogging is easy to occur in low-lying areas even in dry years. The precipitation is concentrated, and the precipitation intensity is high.

2. The spatial distribution of precipitation is uneven.

Warm and humid air from the southeast is lifted by Yanshan Mountain and Taihang Mountain, forming a rain area on the windward slope in front of the mountain and a rain area on the leeward slope.

3. The piedmont Plain is obviously warming.

Because the mountains block the cold air and sink and get warmer, the winter temperature in Beijing Plain is higher than that in the adjacent areas of the same latitude, forming a warm piedmont area.

The diurnal variation of wind direction is remarkable.

The special terrain of "Beijing Bay" makes the mountain and valley wind in Beijing obvious. The plain area is south in the afternoon and turns north at midnight. Nankou, Gubeikou and other places, along the ravine, form a tuyere whose wind speed is obviously greater than the surrounding area.

There are four distinct seasons, the longest in winter, the second in summer and the shorter in spring and autumn.

There are frequent cold and warm air activities in Beijing in spring, and the temperature is changeable and the daily range is large, which is prone to windy and dusty weather. Summer is hot and rainy, which is the season of convective weather such as thunderstorms, strong winds and heavy precipitation. Autumn is sunny and rainy, comfortable and pleasant; Winter is cold and dry, windy and snowy.