Year-round record of size-segregated aerosol composition in central Antarctica (Concordia station): Implications for the degree of fractionation of sea-salt particles - Archive ouverte HAL Access content directly
Journal Articles Journal of Geophysical Research: Atmospheres Year : 2008

Year-round record of size-segregated aerosol composition in central Antarctica (Concordia station): Implications for the degree of fractionation of sea-salt particles

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Abstract

The origin of sea-salt aerosol that reaches the high Antarctic plateau and is trapped in snow and ice cores remains still unclear. In particular, the respective role of emissions from the open ocean versus those from the sea-ice surface is not yet quantified. To progress on this question, the composition of bulk and size-segregated aerosol was studied in 2006 at the Concordia station (75°S, 123°E) located on the high Antarctic plateau. A depletion of sulfate relative to sodium with respect to the seawater composition is observed on sea-salt aerosol reaching Concordia from April to September. That suggests that in winter, when the sea-salt atmospheric load reaches a maximum, emissions from the sea-ice surface significantly contribute to the sea-salt budget of inland Antarctica.
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insu-00378451 , version 1 (11-03-2021)

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Bruno Jourdain, Susanne Preunkert, Omar Cerri, Hélène Castebrunet, Roberto Udisti, et al.. Year-round record of size-segregated aerosol composition in central Antarctica (Concordia station): Implications for the degree of fractionation of sea-salt particles. Journal of Geophysical Research: Atmospheres, 2008, 113 (D14308), 1 à 9 p. ⟨10.1029/2007JD009584⟩. ⟨insu-00378451⟩
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