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Snow chemistry across Antarctica

2005; Cambridge University Press; Volume: 41; Linguagem: Inglês

10.3189/172756405781813320

1727-5644

Nancy A. N. Bertler, Paul A. Mayewski, Alberto J. Aristarain, Peter Barrett, Silvia Becagli, Ronaldo Bernardo, Bo Sun, Xiao Chen, Mark A. J. Curran, Qin D, D. Dixon, F. Ferrona, Hubertus Fischer, M. M. Frey, Massimo Frezzotti, Felix Fundel, Christophe Genthon, R. Gragnani, G. S. Hamilton, Michael Handley, Sung‐Min Hong, Elisabeth Isaksson, Jiancheng Kang, Ren Jian, Kokichi Kamiyama, Shinichi Kanamori, Eija Kärkäs, Lars Karlöf, S. Kaspari, K. J. Kreutz, E. A. Meyerson, Andrei V. Kurbatov, Y. Ming, M. Zhang, Hideaki Motoyama, Robert Mulvaney, Hans Oerter, E. C. Osterberg, Marco Proposito, A. Pyne, Urs Ruth, Jefferson Cárdia Simões, Barbara T. Smith, Sharon B. Sneed, Kimmo Teinilä, F. Traufetter, R. Udisti, Aki Virkkula, Okitsugu Watanabe, B. R. Williamson, J-G. Winther, Li Y, Eric Wolff, Laurent Li, A. Zieliński,

High Altitude and Hypoxia

Abstract An updated compilation of published and new data of major-ion (Ca, Cl, K, Mg, Na, NO 3 , SO 4 ) and methylsulfonate (MS) concentrations in snow from 520 Antarctic sites is provided by the national ITASE (International Trans-Antarctic Scientific Expedition) programmes of Australia, Brazil, China, Germany, Italy, Japan, Korea, New Zealand, Norway, the United Kingdom, the United States and the national Antarctic programme of Finland. The comparison shows that snow chemistry concentrations vary by up to four orders of magnitude across Antarctica and exhibit distinct geographical patterns. The Antarctic-wide comparison of glaciochemical records provides a unique opportunity to improve our understanding of the fundamental factors that ultimately control the chemistry of snow or ice samples. This paper aims to initiate data compilation and administration in order to provide a framework for facilitation of Antarctic-wide snow chemistry discussions across all ITASE nations and other contributing groups. The data are made available through the ITASE web page (http://www2.umaine.edu/itase/content/syngroups/snowchem.html) and will be updated with new data as they are provided. In addition, recommendations for future research efforts are summarized.