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A Review of Antarctic Surface Snow Isotopic Composition: Observations, Atmospheric Circulation, and Isotopic Modeling

Valérie Masson-Delmotte 1 Shugui Hou 2 Alexey Ekaykin 3 Jean Jouzel 1 A. Aristarain 4 T. R. Bernardo 5 D. Bromwich 6 O. Cattani 1 M. Delmotte 1 S. Falourd 1 Massimo Frezzotti 7 Hubert Gallée 8 L. Genoni 9 Elisabeth Isaksson 10 Amaelle Landais 1, 11 M. M. Helsen 12 Georg Hoffmann 1 J. Lopez 13 Vin Morgan 14 Hideaki Motoyama 15 D. Noone 16, 17 Hans Oerter 18 Jean-Robert Petit 8 A. Royer 1 R. Uemura 15 G. A. Schmidt 19 E. Schlosser 20 J. Simões 5 E. J. Steig 21 Barbara Stenni 9 M. Stievenard 1 M. R. van den Broeke 12 R. S. W. van de Wal 12 W. J. van de Berg 12 Françoise Vimeux 1, 22 J. W. C. White 23
Abstract : A database of surface Antarctic snow isotopic composition is constructed using available measurements, with an estimate of data quality and local variability. Although more than 1000 locations are documented, the spatial coverage remains uneven with a majority of sites located in specific areas of East Antarctica. The database is used to analyze the spatial variations in snow isotopic composition with respect to geographical characteristics (elevation, distance to the coast) and climatic features (temperature, accumulation) and with a focus on deuterium excess. The capacity of theoretical isotopic, regional, and general circulation atmospheric models (including “isotopic” models) to reproduce the observed features and assess the role of moisture advection in spatial deuterium excess fluctuations is analyzed.
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Submitted on : Wednesday, April 29, 2009 - 11:40:13 AM
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Valérie Masson-Delmotte, Shugui Hou, Alexey Ekaykin, Jean Jouzel, A. Aristarain, et al.. A Review of Antarctic Surface Snow Isotopic Composition: Observations, Atmospheric Circulation, and Isotopic Modeling. Journal of Climate, American Meteorological Society, 2008, 21 (13), pp.3359 à 3387. ⟨10.1175/2007JCLI2139.1⟩. ⟨insu-00379745⟩

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