air drainage

Noun

uncountable

(physics, meteorology) The gravity-induced downslope flow of relatively cold air. Winds thus produced are called gravity winds.

Japanese Meaning

重力により引き起こされ、比較的冷たい空気が斜面を下向きに流れる現象。

During clear nights in the valley, air drainage often leads to temperature inversions along the slopes.

谷間の晴れた夜には、冷気の流下がしばしば斜面沿いに温度逆転を引き起こします。

Sense（1）

(physics, meteorology) The gravity-induced downslope flow of relatively cold air. Winds thus produced are called gravity winds.