TY - STD AU - Jourdain Bruno, Preunkert Susanne PY - 2008// TI - Year-round record of size-segregated aerosol composition in central Antarctica (Concordia station): Implications for the degree of fractionation of sea-salt particles T2 - J. Geophys. Res. BT - J. Geophys. Res. SP - D14308 - VL - 113 IS - D14 PB - AGU KW - Central Antarctica KW - size segregated aerosol KW - sea-salt fractionation KW - 0305 Atmospheric Composition and Structure: Aerosols and particles KW - 0345 Atmospheric Composition and Structure: Pollution: urban and regional KW - 4801 Oceanography: Biological and Chemical: Aerosols KW - 4906 Paleoceanography: Aerosols KW - 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry KW - 9310 Geographic Location: Antarctica KW - 4207 Oceanography: General: Arctic and Antarctic oceanography KW - 3300 Atmospheric Processes KW - N2 - 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 (75S, 123E) 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. SN - 0148-0227 UR - http://dx.doi.org/10.1029/2007JD009584 N1 - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=1693), last updated on Tue, 30 Nov 1999 00:00:00 +0100 ID - JourdainBruno2008 ER -