The weather situation in Changchun

The weather in Changchun is dry and windy in spring, warm and short in summer, sunny in autumn with large temperature difference, and cold and long in winter.

The climate of Changchun City is in the transitional zone between the humid eastern mountainous area and the semi-arid western plain, belonging to the temperate continental semi-humid monsoon climate type. Although the east and south are not far from the ocean, the role of summer monsoon is weakened due to the blocking of Changbai Mountain.

The west and north are flat Songliao Plain, and the Siberian polar continental air mass is unobstructed, with an average annual temperature of 4.6℃. The highest temperature in history can reach 40℃, and the lowest temperature since 195 1 year has been -36.5℃. The annual precipitation is 600 ~ 700 mm, the frost-free period is 140 ~ 150 days, and the freezing period is 5 months.

Hydrological situation in Changchun

Changchun is a relatively flat terrain, which is the transition zone between the eastern mountainous area and the western Songliao Plain. The main landform types are low mountains and hills, which are distributed in the southeast of the urban area, belonging to a part of the Daheishan Mountains, with a slight northeast-southwest trend, and most of them are between 250 meters and 350 meters above sea level.

The surface water in Changchun City belongs to Songhua River system, the middle and lower reaches of Songhua River, Yinma River and Yitong River, as well as Mushi River, Shuangyang River, Wukai River, Xinkai River and Katcha River. There are seven bubble lakes, such as Polo bubble, Aobaotu bubble and Yuanbao bubble.

For urban surface water, the larger rivers are Songhua River tributaries and Yinma River-Yitong River and its tributaries, such as Xinkai River. Because the bedrock in the lower part of the urban area is Mesozoic Cretaceous red rock series, the rock stratum is dense, impermeable or with little water content, and there is no deep groundwater source, so the groundwater is poor.

The above contents refer to Baidu Encyclopedia-Changchun