Why is the inversion layer thicker in northern Xinjiang than in southern Xinjiang?

The main reasons are radiation and advection and temperature inversion.

The surface of northern Xinjiang is colder in winter than that of southern Xinjiang (the main source of low-altitude atmospheric temperature is the earth's warm atmosphere), but after rising to a certain altitude, the temperature difference between the north and the south is not too big.

(The source of medium and high air temperatures is air heat transfer and a very small amount of solar radiation)

Obviously, when the temperature difference between day and night changes, or even due to the movement of weather systems, Northern Xinjiang is more likely to experience cold temperatures and warm temperatures. The temperature inversion phenomenon lasts for a long time and the altitude thickness where the phenomenon occurs is greater than that of southern Xinjiang