Atmospheric nitrogen deposition: Revisiting the question of the importance of the organic component

SE Cornell

Research output: Contribution to journalArticle (Academic Journal)peer-review

125 Citations (Scopus)

Abstract

The organic component of atmospheric reactive nitrogen plays a role in biogeochemical cycles, climate and ecosystems. Although its deposition has long been known to be quantitatively significant, it is not routinely assessed in deposition studies and monitoring programmes. Excluding this fraction, typically 25-35%, introduces significant uncertainty in the determination of nitrogen deposition, with implications for the critical loads approach. The last decade of rainwater studies substantially expands the worldwide dataset, giving enough global coverage for specific hypotheses to be considered about the distribution, composition, sources and effects of organic-nitrogen deposition. This data collation and meta-analysis highlights knowledge gaps, suggesting where data-gathering efforts and process studies should be focused. New analytical techniques allow long-standing conjectures about the nature and sources of organic N to be investigated, with tantalising indications of the interplay between natural and anthropogenic sources, and between the nitrogen and carbon cycles.
Translated title of the contributionAtmospheric nitrogen deposition: Revisiting the question of the importance of the organic component
Original languageEnglish
Number of pages9
JournalEnvironmental Pollution
DOIs
Publication statusPublished - 2011

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