The deposition and preservation of NO
3− across East Antarctica was investigated. On the coast, dry deposition contributes 27–44 % of the NO
3− fluxes, and the linear relationship between NO
3− and snow accumulation rate suggests a homogeneity of atmospheric NO
3− levels. In inland snow, a relatively weak correlation between NO
3− and snow accumulation was found, indicating that NO
3− is mainly dominated by post-depositional processes. The coexisting ions are generally less influential on snow NO
3−.
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