Akinnubi, R.T. and Akindeji, J.S. 2026. An Integrative Framework for Quantifying, Modelling, and Scenario-Testing Reactive Nitrogen Emissions for Air Quality and Climate Co-Benefits: A Case Study from Ondo State, South-West Nigeria. Nigerian Journal of Theoretical and Environmental Physics. 4, 2 (Aug. 2026), 113–128. DOI:https://doi.org/10.62292/njtep.v4i2.2026.144.