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As a consequence of anthropogenic inputs, the global nitrogen cycle has been significantly altered over the past century, leading to increased nitrogen deposition and disruption of natural biogeochemical processes. Global atmospheric nitrous oxide (N₂O) mole fractions have increased from a pre-industrial value of ~270 nmol/mol to ~319 nmol/mol in 2005, a concerning trend given that N₂O is both a greenhouse gas and an ozone-depleting substance

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