Articles | Volume 19, issue 3
Atmos. Chem. Phys., 19, 2063–2078, 2019
https://doi.org/10.5194/acp-19-2063-2019
Atmos. Chem. Phys., 19, 2063–2078, 2019
https://doi.org/10.5194/acp-19-2063-2019
Research article
14 Feb 2019
Research article | 14 Feb 2019

Seasonal and diurnal variability in O3, black carbon, and CO measured at the Rwanda Climate Observatory

H. Langley DeWitt et al.

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Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006. 
Archibald, S., Nickless, A., Govender, N., Scholes, R. J., and Lehsten, V.: Climate and the inter-annual variability of fire in southern Africa: a meta-analysis using long-term field data and satellite-derived burnt area data, Global Ecol. Biogeogr., 19, 794–809, 2010. 
Baier, B. C., Brune, W. H., Lefer, B. L., Miller, D. O., and Martins, D. K.: Direct ozone production rate measurements and their use in assessing ozone source and receptor regions for Houston in 2013, Atmos. Environ., 114, 83–91, https://doi.org/10.1016/J.ATMOSENV.2015.05.033, 2015. 
Baumgardner, D., Raga, G., Peralta, O., Rosas, I., Castro, T., Kuhlbusch, T., John, A., and Petzold, A.: Diagnosing black carbon trends in large urban areas using carbon monoxide measurements, J. Geophys. Res.-Atmos., 107, 8342, https://doi.org/10.1029/2001JD000626, 2002. 
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Short summary
Air quality in rapidly developing East Africa is a growing but understudied concern. We analyzed long-term black carbon, carbon monoxide, and ozone measurements from the remote Rwanda Climate Observatory and found that seasonal regional biomass burning raised black carbon levels to above-urban concentrations 6 months out of the year. Additional local pollution could exacerbate this issue. More regional monitoring needs to be done to understand and reduce air pollution in this region.
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