What are the characteristics of autumn in Chengdu?

The autumn in Chengdu is characterized by crisp autumn air, and the autumn precipitation greatly exceeds the evaporation.

Chengdu has a subtropical monsoon climate, with early spring, hot summer, cool autumn and warm winter. The annual average temperature is 16℃, and the annual rainfall is about 1000 mm. A remarkable feature of Chengdu's climate is cloudy and short sunshine time.

Another notable feature of Chengdu's climate is humid air. Therefore, although the temperature is not high in summer (the highest temperature generally does not exceed 35℃), it looks sultry. The average temperature in winter is above 5℃, but it is very cold because of cloudy days and humid air. The rain in Chengdu is concentrated in July and August, and there is less rain and less ice and snow in winter and spring.

Extended data

Chengdu Plain has four distinct seasons, less sunshine, mild climate and abundant rainfall, and belongs to a warm and humid subtropical Pacific southeast monsoon climate zone. In the piedmont area of Longmen Mountain in the northwest of the plain, the temperature is low, the precipitation is abundant, the evaporation is slightly low, the rainfall in the east and southeast is slightly less, and the temperature is slightly higher.

The temperature in Chengdu Plain has not changed much. The annual average temperature is 16. 1℃, and the annual maximum temperature generally appears in July and August. The monthly average maximum temperature does not exceed 26℃, and the monthly average minimum temperature is generally not lower than 4℃. So freezing is extremely rare, there is no freezing of soil and groundwater.

Abundant rainfall is one of the climatic characteristics of Chengdu Plain. Longmen Mountain is located on the west side of the plain, which has a significant impact on atmospheric rainfall. The water vapor coming from the east is blocked by the Longmen Mountain barrier, which forms topographic precipitation, resulting in a rainy belt in Ya 'an-Dujiangyan-Anxian, with an annual average rainfall of 1.200- 1.600 mm, and the rainfall decreases to the southeast.

The rainfall in Wenjiang, Danxian, Xinfan and Guanghan is about 1000mm, and the rainfall in Jintang, Chengdu, Xinjin and Longquan foothills is about 900 mm..

Rainfall is unevenly distributed in seasons. From June to September, a large amount of precipitation was generated under the control of warm and humid air masses in tropical oceans. The total rainfall in four months was 753.7 mm, accounting for 76% of the total precipitation in the whole year. Winter is controlled by dry and cold air mass in Chinese mainland, with dry climate and scarce precipitation.

The average annual relative humidity in Chengdu Plain is 82. 1%, and the average annual evaporation is 994 mm, with the highest 1 15 1 mm and the lowest 960 mm ..

Baidu Encyclopedia-Chengdu Plain

Baidu Encyclopedia-Chengdu