在氣溶膠物理學中，沉降是指氣溶膠粒子聚集或沉積在固體表面上，從而降低空氣中粒子濃度的過程。沉降時依據是否有降水可以分為兩類，分別為干沉降和濕沉降。如果大氣中的氣溶膠粒子是被雨、雪、露、霜等降水物質帶到地面上，那麼這個過程則被稱為濕沉降，若沒有受到降水作用而落到地面則為乾沉降。[1][2][3]
參考文獻
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