Articles | Volume 15, issue 16
https://doi.org/10.5194/acp-15-9435-2015
https://doi.org/10.5194/acp-15-9435-2015
Research article
 | 
24 Aug 2015
Research article |  | 24 Aug 2015

Investigation of post-depositional processing of nitrate in East Antarctic snow: isotopic constraints on photolytic loss, re-oxidation, and source inputs

G. Shi, A. M. Buffen, M. G. Hastings, C. Li, H. Ma, Y. Li, B. Sun, C. An, and S. Jiang

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Guitao Shi on behalf of the Authors (01 Jun 2015)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (01 Jun 2015) by Jan Kaiser
RR by Anonymous Referee #1 (13 Jun 2015)
ED: Reconsider after minor revisions (Editor review) (22 Jun 2015) by Jan Kaiser
AR by Guitao Shi on behalf of the Authors (02 Jul 2015)
ED: Reconsider after minor revisions (Editor review) (08 Jul 2015) by Jan Kaiser
AR by Guitao Shi on behalf of the Authors (16 Jul 2015)  Author's response   Manuscript 
ED: Publish as is (16 Jul 2015) by Jan Kaiser
AR by Guitao Shi on behalf of the Authors (24 Jul 2015)
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Short summary
We evaluate isotopic composition of NO3- in different environments across East Antarctica. At high snow accumulation sites, isotopic ratios are suggestive of preservation of NO3- deposition. At low accumulation sites, isotopes are sensitive to both the loss of NO3- due to photolysis and secondary formation of NO3- within the snow. The imprint of post-depositional alteration is not uniform with depth, making it difficult to predict the isotopic composition at depth from near-surface data alone.
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