Articles | Volume 10, issue 2
https://doi.org/10.5194/tc-10-825-2016
https://doi.org/10.5194/tc-10-825-2016
Research article
 | 
15 Apr 2016
Research article |  | 15 Apr 2016

Potential genesis and implications of calcium nitrate in Antarctic snow

Kanthanathan Mahalinganathan and Meloth Thamban

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Cited articles

Al-Abadleh, H. A., Krueger, B. J., Ross, J. L., and Grassian, V. H.: Phase transitions in calcium nitrate thin films, Chem. Commun., 22, 2796–2797, https://doi.org/10.1039/B308632A, 2003.
Albani, S., Mahowald, N. M., Delmonte, B., Maggi, V., and Winckler, G.: Comparing modeled and observed changes in mineral dust transport and deposition to Antarctica between the Last Glacial Maximum and current climates, Clim. Dynam., 38, 1731–1755, https://doi.org/10.1007/s00382-011-1139-5, 2012.
Antony, R., Thamban, M., Krishnan, K. P., and Mahalinganathan, K.: Is cloud seeding in coastal Antarctica linked to bromine and nitrate variability in snow?, Environ. Res. Lett., 5, 014009, https://doi.org/10.1088/1748-9326/5/1/014009, 2010.
Basile-Doelsch, I., Grousset, F. E., Revel, M., Petit, J. R., Biscaye, P. E., and Barkov, N. I.: Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6, Earth Planet. Sc. Lett., 146, 573–589, https://doi.org/10.1016/S0012-821X(96)00255-5, 1997.
Berhanu, T. A., Savarino, J., Erbland, J., Vicars, W. C., Preunkert, S., Martins, J. F., and Johnson, M. S.: Isotopic effects of nitrate photochemistry in snow: a field study at Dome C, Antarctica, Atmos. Chem. Phys., 15, 11243–11256, https://doi.org/10.5194/acp-15-11243-2015, 2015.
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Short summary
Our results show a strong association between calcium and nitrate ions in snow from two different regions that are > 2000 km apart in East Antarctica. Such association could have formed during the interaction between long-range transported dust with the atmospheric nitrate. This study also implies that apart from other well-known sources of nitrate in Antarctica, nitrate associated with mineral dust could form a significant portion of total nitrate deposited in Antarctic snow.