On the natural spatio-temporal heterogeneity of South Pacific nitrous oxide
Nitrous oxide (N2O) is a powerful greenhouse gas and ozone depleting substance, but its
natural sources, especially marine emissions, are poorly constrained. Localized high
concentrations have been observed in the oxygen minimum zones (OMZs) of the tropical
Pacific but the impacts of El Niño cycles on this key source region are unknown. Here we
show atmospheric monitoring station measurements in Samoa combined with atmospheric
back-trajectories provide novel information on N2O variability across the South Pacific …
natural sources, especially marine emissions, are poorly constrained. Localized high
concentrations have been observed in the oxygen minimum zones (OMZs) of the tropical
Pacific but the impacts of El Niño cycles on this key source region are unknown. Here we
show atmospheric monitoring station measurements in Samoa combined with atmospheric
back-trajectories provide novel information on N2O variability across the South Pacific …
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