Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 8
Articles | Volume 26, issue 8
https://doi.org/10.5194/acp-26-5517-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-5517-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 8
Research article
 | 
23 Apr 2026
Research article |  | 23 Apr 2026

Deriving cropland N2O emissions from space-based NO2 observations

Taylor J. Adams, Genevieve Plant, and Eric A. Kort

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Short summary
Nitrous oxide (N2O) is a potent greenhouse gas and ozone-depleting substance emitted from agriculture. Emissions cannot presently be observed from space. We leverage the co-emission of reactive nitrogen oxides (NO + NO2 = NOx) from croplands by determining N2O : NOx emissions ratios with aircraft. We apply these ratios to daily estimates of NOx emissions derived from space-based observations, thus generating a space-based proxy for N2O emissions, with close agreement against independent observations.
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