Light Absorption Enhancement of Black Carbon Aerosol Constrained by Particle Morphology

The role of iron and black carbon in aerosol light absorption

1 Major part of this study was done while worked at: Jacob Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Israel 2 NASA Goddard Space Flight Center, NASA Goddard SFC, USA 3 Max Planck Institute for Chemistry, Mainz, Germany 4 Laboratoire de Optique Atmosphérique, Université de Lille 1/CNRS, Villeneuve d’Ascq, France 5 Ghent University (UGent), Department of Analyti...

Supplement of Measuring the morphology and density of internally mixed black carbon with SP2 and VTDMA: new insight into the absorption enhancement of black carbon in the atmosphere

Measuring the morphology and density of internally mixed black carbon with SP2 and VTDMA: new insight into the absorption enhancement of black carbon in the atmosphere

The morphology and density of black carbon (BC) cores in internally mixed BC (In-BC) particles affect their mixing state and absorption enhancement. In this work, we developed a new method to measure the morphology and effective density of the BC cores of ambient In-BC particles using a single-particle soot photometer (SP2) and a volatility tandem differential mobility analyzer (VTDMA) during t...

Enhanced light absorption and scattering by carbon soot aerosol internally mixed with sulfuric acid.

Light absorption by carbon soot increases when the particles are internally mixed with nonabsorbing materials, leading to increased radiative forcing, but the magnitude of this enhancement is a subject of great uncertainty. We have performed laboratory experiments of the optical properties of fresh and internally mixed carbon soot aerosols with a known particle size, morphology, and the mixing ...

Black carbon absorption at the global scale is affected by particle-scale diversity in composition

Atmospheric black carbon (BC) exerts a strong, but uncertain, warming effect on the climate. BC that is coated with non-absorbing material absorbs more strongly than the same amount of BC in an uncoated particle, but the magnitude of this absorption enhancement (Eabs) is not well constrained. Modelling studies and laboratory measurements have found stronger absorption enhancement than has been ...