The contribution of black carbon to global ice nucleating particle concentrations relevant to mixed-phase clouds
2020; National Academy of Sciences; Volume: 117; Issue: 37 Linguagem: Inglês
10.1073/pnas.2001674117
ISSN1091-6490
AutoresGregory P. Schill, Paul J. DeMott, Ethan Emerson, Anne Marie Rauker, John K. Kodros, Kaitlyn J. Suski, Thomas C. J. Hill, Ezra J. T. Levin, Jeffrey R. Pierce, Delphine K. Farmer, Sonia M. Kreidenweis,
Tópico(s)Plant responses to elevated CO2
ResumoSignificance The Earth’s climate is affected by the radiative properties of clouds. In clouds containing both supercooled water droplets and ice particles (mixed-phase clouds), cloud lifetime and albedo are affected by the presence of ice nucleating particles (INP). After decades of research, the importance of black carbon (BC) as an INP remains unresolved. In this work, we determined the contribution of BC to INP concentrations ([INP]) from real-world wildfires and prescribed burns. We found that BC does not contribute significantly to [INP] in near-field biomass burning plumes. These results were applied as parameterizations to global climate model output. Combined with previous work on diesel-engine exhaust, we find that BC does not contribute significantly to global [INP] relevant to mixed-phase clouds.
Referência(s)