A new spatial distribution map of δ 18 O in Antarctic surface snow

International audience We developed a gridded map of surface Antarctic snow isotopic composition using a recently compiled database and the modified Bowen and Wilkinson (2002) model using latitude and elevation as the primary predictors while also incorporating regional and local deviations based on...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Wang, Yetang, Hou, Shugui, Masson-Delmotte, Valérie, Jouzel, Jean
Other Authors: Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences Beijing (CAS), Glaces et Continents, Climats et Isotopes Stables (GLACCIOS), Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2009
Subjects:
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Antarc*
Antarctic
Online Access:https://hal.science/hal-03104293
https://hal.science/hal-03104293/document
https://hal.science/hal-03104293/file/2008GL036939.pdf
https://doi.org/10.1029/2008GL036939
Description
Summary:International audience We developed a gridded map of surface Antarctic snow isotopic composition using a recently compiled database and the modified Bowen and Wilkinson (2002) model using latitude and elevation as the primary predictors while also incorporating regional and local deviations based on available isotopic data. The map was generated using a 1‐km digital elevation model grid data as the model input. The average of the absolute deviations between observations and predictions was about 0.8‰, and the standard deviation is 0.9‰. The resulting δ18O patterns reproduced correctly spatial isotopic gradients with respect to geographical characteristics, as well as climatic features.

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