大気汚染物質の海洋への輸送(そのII) : 海上における降水洗浄の観測

概要

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The concentration and the size distribution of condensation nuclei and the concentration of the giant sea-salt particles were measured during a rainfall and sea fog on the sea. The varia-tions of these parameters accompanied by such meteorological phenomena were studied and the following results were obtained. In a sea fog, the concentration of the giant sea-salt particles decreased dramatically by two or three orders. As for the condensation nuclei, it was seen that the concentration of small size particles decreased. The former may be attributed to the consumption of sea fog nuclei and the latter may be attributed to the attachment to sea fog droplets by Brownian motion. During the rainfall, the concentration of giant sea-salt particles increased and that of large size particles out of condensation nuclei decreased. The splashes, which are produced when the rain drops collide with the sea surface, may be considered to increase the concentration of giant sea-salt particles.
北海道大学の論文
1982-03-25