Nitrogen isotopes in ice core nitrate linked to anthropogenic atmospheric acidity change

Nitrogen stable isotope ratio (δ(15)N) in Greenland snow nitrate and in North American remote lake sediments has decreased gradually beginning as early as ∼1850 Christian Era. This decrease was attributed to increasing atmospheric deposition of anthropogenic nitrate, reflecting an anthropogenic impa...

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Main Authors: Geng, Lei, Alexander, Becky, Cole-Dai, Jihong, Steig, Eric J., Savarino, Joël, Sofen, Eric D., Schauer, Andrew J.
Format: Artigo
Sprog:Inglês
Udgivet: National Academy of Sciences 2014
Fag:
Physical Sciences
Online adgang:https://ncbi.nlm.nih.gov/pmc/articles/PMC4000786/
https://ncbi.nlm.nih.gov/pubmed/24711383
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1073/pnas.1319441111
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