Why is Chenzhou colder than Matian?

Chenzhou, located at the northern foot of Nanling Mountain, is one of the cities with the most drastic temperature changes in the south of China. The average temperature in low altitude area of 65438+ 10 and July is about 6℃ and 30℃ respectively. The annual sunshine hours are about 1300- 1600 hours, concentrated in midsummer; The annual precipitation is about 1400- 1800 mm, which is concentrated in spring and summer.

2. In winter, Chenzhou is affected by Nanling static front, and the weather is rainy and cold, sometimes with snowfall and freezing rain.

3. Cold air goes south.

Recently, the cold air mass from the north is extremely strong and has been heading south one after another. Xie Yijun said that the cold air in the south is the primary reason for the low temperature in Hunan. Secondly, the westerly belt of East Asia is a deep U-shaped trough in the north-south direction, which dominates the downward cold air all the way, while the central and eastern China and Indo-China Peninsula are located at the bottom of the U-shaped trough.