Carbonaceous aerosol
Aerosol consisting predominantly of organic substances and various forms of black carbon (Charlson and Heintzenberg, 1995, p. 401).
Definition courtesy of IPCC AR4.
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.