Among atmospheric constituents, carbonaceous particles are considered with increasing interest due to their undeniable effect on climate, environment, and human health. However, uncertainties in the definitions of different carbonaceous components and on related measurements techniques affect both experimental and model results. In fact, comparison and integration of heterogeneous data are still unsettled questions for the scientific community, and an improvement in sources characterization would increase the understanding of the formation mechanism of different components, such as brown carbon and organic carbon.

This special issue aims at feeding debate between experimental and modelling scientists on the following topics:

• Black carbon versus elemental carbon: comparing measurement techniques
• Brown and organic carbon characterization
• Identification and characterization of black carbon aerosol sources
• Long-term measurements of black carbon aerosol
• Optical and microphysical properties of carbonaceous aerosol: experimental and modelling
• Long-range mixing effect of carbonaceous particles
• Climatic effects of carbonaceous aerosol

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/amet/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/submit/journals/amet/cpa/ according to the following timetable: