The reason why the daily temperature difference of the Qinghai-Tibet Plateau is larger than that of the middle and lower reaches of the Yangtze River Plain (① It is close to the sun; ② The Qinghai-Tib

The reason why the daily temperature difference of the Qinghai-Tibet Plateau is larger than that of the middle and lower reaches of the Yangtze River Plain (① It is close to the sun; ② The Qinghai-Tibet Plateau is much larger than that of the middle and lower reaches of the Yangtze River Plain. B

Because the Qinghai-Tibet Plateau is high in altitude, the air is thin and clean, and the weakening effect on solar radiation is weak, so its radiation intensity is high and the daytime temperature is high. But at night, the atmospheric inverse radiation is very weak and the temperature is very low, which has the characteristics of large temperature difference between day and night.