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

Valérie Masson-Delmotte 1, 2 Shugui Hou 3 Alexey Ekaykin 4 Jean Jouzel 1, 2 A. Aristarain 5 T. R. Bernardo 6 D. Bromwich 7 O. Cattani 1, 2 M. Delmotte 1, 8, 2 S. Falourd 1, 2 Massimo Frezzotti 9 Hubert Gallée 10 L. Genoni 11 Elisabeth Isaksson 12 Amaelle Landais 1, 13, 2 M. M. Helsen 14 Georg Hoffmann 1, 2 J. Lopez 15 Vin Morgan 16 Hideaki Motoyama 17 D. Noone 18, 19 Hans Oerter 20 Jean-Robert Petit 10 A. Royer 1 R. Uemura 17 G. A. Schmidt 21 E. Schlosser 22 J. Simões 6 E. J. Steig 23 Barbara Stenni 11 M. Stievenard 1, 2 M. R. van den Broeke 14 R. S. W. van de Wal 14 W. J. van de Berg 14 Françoise Vimeux 1, 2, 24 J. W. C. White 25
2 GLACCIOS - Glaces et Continents, Climats et Isotopes Stables
LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] : DRF/LSCE
8 ICOS-RAMCES - ICOS-RAMCES
LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] : DRF/LSCE
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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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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