Elemental compositions of individual aerosol particles collected over the Southern Ocean: A case study

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• 作者：Mouri ; Hideaki ; Nagao ; Ippei ; Okada ; Kikuo ; Koga ; Seizi ; Tanaka ; Hiroshi
• 关键词：Elemental composition ; Aerosol particles ; Southern Ocean ; Case study ; Antarctic atmosphere ; Cloud physics
• 刊名：Atmospheric Research
• 出版年：1997
• 出版时间：January, 1997
• 年：1997
• 卷：43
• 期：2
• 页码：183-195
• 全文大小：677 K

文摘

Marine aerosols have been sampled from the boundary layer over the Southern Ocean. By means of X-ray spectrometry, elemental compositions of individual particles have been studied. The data reveal the occurrence of two chemical processes over the Southern Ocean: (1) modification of sea salts by acidic materials, where Cl⁻ is replaced by SO²⁻₄ and/or NO⁻₃, and (2) fractional recrystallization within evaporating seawater drops followed by shattering. The effects of these phenomena appear to be simultaneously enhanced when there is mass transfer from the free troposphere.