Modelling black carbon absorption of solar radiation: combining external and internal mixing assumptions


Curci G., Alyuz U., Baro R., Bianconi R., Bieser J., Christensen J. H. , ...Daha Fazla

ATMOSPHERIC CHEMISTRY AND PHYSICS, cilt.19, ss.181-204, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 19 Konu: 1
  • Basım Tarihi: 2019
  • Doi Numarası: 10.5194/acp-19-181-2019
  • Dergi Adı: ATMOSPHERIC CHEMISTRY AND PHYSICS
  • Sayfa Sayıları: ss.181-204

Özet

An accurate simulation of the absorption properties is key for assessing the radiative effects of aerosol on meteorology and climate. The representation of how chemical species are mixed inside the particles (the mixing state) is one of the major uncertainty factors in the assessment of these effects. Here we compare aerosol optical properties simulations over Europe and North America, coordinated in the framework of the third phase of the Air Quality Model Evaluation International Initiative (AQMEII), to 1 year of AERONET sunphotometer retrievals, in an attempt to identify a mixing state representation that better reproduces the observed single scattering albedo and its spectral variation. We use a single post-processing tool (FlexAOD) to derive aerosol optical properties from simulated aerosol speciation profiles, and focus on the absorption enhancement of black carbon when it is internally mixed with more scattering material, discarding from the analysis scenes dominated by dust.