INFLUENCE OF EMISSION
Influence of emission location on the climate impact of air pollutants
We used MOZART-2 and a global radiation model to quantify the variable effect on climate resulting from emissions of anthropogenic tropospheric ozone (NOx, carbon monoxide and non-methane hydrocarbons) precursors. We found that changes in O
Biomass burning emissions contain more hydrocarbons than typical anthropogenic emissions. Hence, we expect a larger climate benefit to result from reductions in biomass burning than from reductions in industrial emissions of the same magnitude. We investigated the sensitivity of direct radiative forcing due to tropospheric ozone and aerosols (black carbon, organic carbon and sulfate) to a marginal reduction in their (or their precursor) emissions from major biomass burning regions. We found a small negative global direct radiative forcing results from biomass burning emission reductions due to reductions in ozone and aerosols (Naik, Mauzerall et al., 2007). However, significant regional variability exists and the effect of indirect radiative forcing and internal aerosol mixtures are areas for future research. More recent research of ours has shown that when indirect forcing and internal mixing of black and organic carbon are taken into account, on a global scale aerosols emitted from open biomass burning are unlikely to exert a positive RF (Kopp & Mauzerall, 2010).
Kopp, RE and Mauzerall DL. Assessing the climatic benefits of black carbon mitigation. Proceedings of the National Academy of Sciences, 2010.
Naik, V., Mauzerall, D. L., Horowitz, L. W., Schwarzkopf, D., Ramaswamy, V., and Oppenheimer, M., “Net Radiative Forcing Due to Changes in Regional Emissions to Tropospheric Ozone Precursors,” J. Geophys. Res., Vol. 110, D24306, doi:10.1029/2005JD005908, December 2005.
Naik, V., D. L. Mauzerall, L. W. Horowitz, M. D. Schwarzkopf, V. Ramaswamy, M. Oppenheimer, “Sensitivity of Radiative Forcing from Biomass Burning Aerosols and Ozone to Emission Location,” Geophys. Res. Lett., VOL. 34, L03818, doi:10.1029/2006GL028149, 2007.