R. VECCHI

Carbonaceous aerosol (CA) plays an important role in many different issues ranging from human health to global climate change. It mainly consists of organic carbon (OC) and elemental carbon (EC) although a minor fraction of carbonate carbon could be also present. Thermal-optical methods (TOT/TOR) are presently the most widespread approach to...

Atmospheric aerosol and gases affect visibility by scattering and absorbing the incoming radiation (Watson, 2002; Pitchford et al, 2007). While the role of gases is relatively well understood, the effect of particulate matter (PM) is more complicated to be assessed since it depends on several factors such as particles size distribution and...

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Carbonaceous aerosol is a major component of urban particulate matter (PM), in particular of its finer fractions (PM2.5, PM1). The elemental part, often referred to as EC, is strongly light absorbing: when determined by optical methods it is usually called "black carbon" (BC). The two quantities, EC and BC, do not exactly define the same PM...

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Campioni di PM vengono regolarmente raccolti in area urbana per monitorare i livelli di PM10 e PM2.5, utilizzando campionatori sequenziali a basso volume (LVS) dotati, solitamente, di filtri 47 mm gestiti su base giornaliera. I filtri in PTFE (Teflon®) risultano molto indicati sia per le misure gravimetriche che per l"analisi composizionale del...

Black Carbon (BC) is the main absorber of solar radiation among the aerosol components, it influences cloud processes, and alters the melting of snow and ice cover. On global scale, it is currently identified as the second most important individual climate-warming component after CO2, but uncertainties on the radiative forcing related to...