Why Yulin is colder than Xi 'an?

Higher latitude, different altitude, different climate types, etc.

1, high latitude: Yulin is located in the north, with high latitude and less direct sunlight radiation, resulting in low temperature.

2. Altitude difference: The terrain of Yulin City is relatively high, in some areas of mountainous areas or plateaus. According to the law of elevation fluctuation, with the elevation increasing, the return air volume decreases, the density increases, and the wet coal decreases, which affects the process of water vapor and energy transmission, resulting in obvious cold and warm boundaries between different levels.

3. Different climate types: The two cities have different climate characteristics. Xi 'an belongs to warm temperate and semi-humid climate; Yulin belongs to the inland drought or the prevailing wind environment of mid-latitude valley blocking in Asian monsoon continent, which forms a continuous dry weather with severe lack of effective rainwater resources, accompanied by fierce, fast and powerful blue sky, sunny days and beautiful scenery, but it is easy to send out to put out the fire in Lin Yuan.