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Stable isotopes in surface snow along a traverse route from Zhongshan station to Dome A, East Antarctica

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Xiao, C. , Ding, M. , Masson-Delmotte, V. , Zhang, R. , Jin, B. , Ren, J. , Li, C. , Werner, M. , Wang, Y. , Cui, X. and Wang, X. (2012): Stable isotopes in surface snow along a traverse route from Zhongshan station to Dome A, East Antarctica , Climate Dynamics . doi: 10.1007/s00382-012-1580-0
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Abstract:

Samples of surface snow were collected for stable isotope analysis along the traverse route from Zhongshan to Dome A (East Antarctica) from Dec 28th, 2007 to Feb. 8th, 2008. The local relationship between dD and surface temperature is established to be 6.4 ± 0.2 % per °C, very similar to the average for East Antarctic. The deuterium excess shows a pattern of high values over Antarctica, particularly at Dome A. We compare our data with an atmospheric general circulation model which includes stable water isotopes (ECHAM5-wiso). The model simulation captures the right levels of dD, but overestimates d18O. This study provides support for the ongoing deep ice core project at Dome A.

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