簡單climate問題..(中2程度)..10分!!!

Because once the sun radiate to or onto the ground, the short wave radiation change

(reflect) to long wave radiation, so the reflection current can easily heat up the air near

the ground. So, the air will be heated up faster.

You can say the air that near to the ground is denser, but the better way to explain is:

denser air sink because of desity, weight, the heavier, the lower.Due to Gravitational

Force.