1Department of Atmospheric Science, Colorado State University, Fort
Collins, Colorado, USA
2University of North Carolina at Charlotte, Charlotte, North Carolina,
3Department of Civil & Environmental Engineering, Massachusetts
Institute of Technology, Cambridge, Massachusetts, USA
4National Center for Atmospheric Research, Boulder, Colorado, USA
Received: 01 Feb 2016 – Discussion started: 25 Feb 2016
Abstract. Open, uncontrolled combustion of domestic waste is a potentially significant source of aerosol; however, this aerosol source is not generally included in many global emissions inventories. To provide a first estimate of the aerosol radiative impacts from domestic-waste combustion, we incorporate the Wiedinmyer et al. (2014) emissions inventory into GEOS-Chem-TOMAS, a global chemical-transport model with online aerosol microphysics. We find domestic-waste combustion increases global-mean black carbon and organic aerosol concentrations by 8 and 6 %, respectively, and by greater than 40 % in some regions. Due to uncertainties regarding aerosol optical properties, we estimate the globally averaged aerosol direct radiative effect to range from −5 to −20 mW m−2; however, this range increases from −40 to +4 mW m−2 when we consider uncertainties in emission mass and size distribution. In some regions with significant waste combustion, such as India and China, the aerosol direct radiative effect may exceed −0.4 W m−2. Similarly, we estimate a cloud-albedo aerosol indirect effect of −13 mW m−2, with a range of −4 to −49 mW m−2 due to emission uncertainties. In the regions with significant waste combustion, the cloud-albedo aerosol indirect effect may exceed −0.4 W m−2.
Revised: 16 May 2016 – Accepted: 17 May 2016 – Published: 03 Jun 2016
Kodros, J. K., Cucinotta, R., Ridley, D. A., Wiedinmyer, C., and Pierce, J. R.: The aerosol radiative effects of uncontrolled combustion of domestic waste, Atmos. Chem. Phys., 16, 6771-6784, doi:10.5194/acp-16-6771-2016, 2016.