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Diurnal variations in oxygen and nitrogen isotopes of atmospheric nitrogen dioxide and nitrate: implications for tracing NOxoxidation pathways and emission sources

Albertin, Sarah ; Savarino, Joël ; Bekki, Slimane ; Barbero, Albane ; Grilli, Roberto ; Fournier, Quentin ; Ventrillard, Irène ; Caillon, Nicolas ; Law, Kathy S.

Atmospheric chemistry and physics, 2024, Vol.24 (2) [Periódico revisado por pares]

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Título:
Diurnal variations in oxygen and nitrogen isotopes of atmospheric nitrogen dioxide and nitrate: implications for tracing NOxoxidation pathways and emission sources
Autor: Albertin, Sarah ; Savarino, Joël ; Bekki, Slimane ; Barbero, Albane ; Grilli, Roberto ; Fournier, Quentin ; Ventrillard, Irène ; Caillon, Nicolas ; Law, Kathy S.
Assuntos: Ocean, Atmosphere ; Sciences of the Universe
É parte de: Atmospheric chemistry and physics, 2024, Vol.24 (2)
Descrição: The oxygen (∆17O) and nitrogen (∂15) isotopic compositions of atmospheric nitrate (NO3−) are widely used as tracers of its formation pathways, precursor (nitrogen oxides NOx = nitric oxide NO + nitrogen NO2) emission sources, and physico-chemical processing. However, the critical lack of observations on the multi-isotopic composition of NO2 maintainssignificant uncertainties regarding the links between the isotopic composition of NOx and NO3−, which may bias estimates ofthe NO3− formation processes and the distribution of sources. We report here on the first simultaneous atmospheric observations of ∆17O and ∂15 in NO2 and NO3−.
Editor: European Geosciences Union
Idioma: Inglês

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