T. Klippel, H. Fischer, H. Bozem, M. G. Lawrence, T. Butler, P. Jöckel, H. Tost, M. Martinez, H. ... more T. Klippel, H. Fischer, H. Bozem, M. G. Lawrence, T. Butler, P. Jöckel, H. Tost, M. Martinez, H. Harder, E. Regelin, R. Sander, C. L. Schiller, A. Stickler, and J. Lelieveld Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany Department of Chemistry, York University, Toronto, Canada now at: Oeschger Centre for Climate Change Research and Institute for Geography, Univ. Bern, Switzerland now at: Deutsches Zentrum für Luft und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany
The modelling of aerosol radiative forcing is a major cause of uncertainty in the assessment of g... more The modelling of aerosol radiative forcing is a major cause of uncertainty in the assessment of global and regional atmospheric energy budgets and climate change. One reason is the strong dependence of the aerosol optical properties on the mixing state of aerosol components like black carbon and sulphates. Using a new column version of the aerosol optical properties and radiative transfer code of the atmospheric chemistry-climate model EMAC, we study the radiative transfer applying various mixing states. The aerosol optics code builds on the AEROPT submodel which assumes homogeneous internal mixing utilising the volume average refractive index mixing rule. We have extended the submodel to additionally account for external mixing, partial external mixing and multi-layered particles. Furthermore, we have implemented the volume average dielectric-constant and Maxwell Garnett Mixing rule. We performed regional case studies considering columns over China, India and Africa, corroborating ...
T. Klippel, H. Fischer, H. Bozem, M. G. Lawrence, T. Butler, P. Jöckel, H. Tost, M. Martinez, H. ... more T. Klippel, H. Fischer, H. Bozem, M. G. Lawrence, T. Butler, P. Jöckel, H. Tost, M. Martinez, H. Harder, E. Regelin, R. Sander, C. L. Schiller, A. Stickler, and J. Lelieveld Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany Department of Chemistry, York University, Toronto, Canada now at: Oeschger Centre for Climate Change Research and Institute for Geography, Univ. Bern, Switzerland now at: Deutsches Zentrum für Luft und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany
The modelling of aerosol radiative forcing is a major cause of uncertainty in the assessment of g... more The modelling of aerosol radiative forcing is a major cause of uncertainty in the assessment of global and regional atmospheric energy budgets and climate change. One reason is the strong dependence of the aerosol optical properties on the mixing state of aerosol components like black carbon and sulphates. Using a new column version of the aerosol optical properties and radiative transfer code of the atmospheric chemistry-climate model EMAC, we study the radiative transfer applying various mixing states. The aerosol optics code builds on the AEROPT submodel which assumes homogeneous internal mixing utilising the volume average refractive index mixing rule. We have extended the submodel to additionally account for external mixing, partial external mixing and multi-layered particles. Furthermore, we have implemented the volume average dielectric-constant and Maxwell Garnett Mixing rule. We performed regional case studies considering columns over China, India and Africa, corroborating ...
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