Why is Xichang warm in winter and cool in summer?

Xichang belongs to the tropical plateau monsoon climate zone and is known as the "Spring City". The climate resources are abundant, with the characteristics of warm winter and cool summer, four seasons like spring, abundant rainfall, concentrated rainfall, abundant sunshine and abundant light and heat resources. During the day, the solar radiation is strong, and the temperature difference between day and night is large.

Xichang, the capital of Liangshan Yi Autonomous Prefecture, Sichuan Province, is located in the Anning Valley area in the southwest of Sichuan Province, with an area of 265 1 square kilometer. It has jurisdiction over 6 streets, 8 towns and 29 townships (including 12 Yi townships and 2 Hui townships), with a permanent population of 775,000 and an urbanization rate of 57.57%. Xichang is the political, economic, cultural and transportation center of Panxi and an important city combining Sichuan and Yunnan.

Extended data;

Geographical environment;

Xichang is located in the hinterland of the Anning River Plain (the second largest plain in Sichuan) on the western Sichuan Plateau (elevation 1500-2500m), with east longitude10/46'-102 25' and north latitude 27 32'-28.

Xichang altitude1500m. The terrain is mainly Zhongshan, accounting for 78.9% of the city's total area, with high mountains and low mountains accounting for 1. 1% and 3.4% respectively. The flat dam area 16.4% is the second largest valley plain in Sichuan Province.

There are mountains on both sides of the Anning River, and Yak Mountain in the west is the main part of the city's mountains, accounting for half of the city's total area. It runs through the whole territory from north to south, forming the watershed between Anning River and Yalong River. Many peaks in the north of the mountain are above 3500 meters above sea level and gradually decrease to the south. Most of the mountain is between 2000 meters and 3000 meters. The east side of Anning River belongs to the Loki Mountains. The main ridge line in the northern section is in Xide County, and the main ridge line in the southern section is on the border line from Xichang to Puge.

Reference source; Baidu Encyclopedia-Xichang