Articles | Volume 12, issue 8
https://doi.org/10.5194/gmd-12-3609-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-12-3609-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Model evaluation paper
| 
21 Aug 2019
Model evaluation paper |
| 21 Aug 2019
| 21 Aug 2019
The global aerosol–climate model ECHAM6.3–HAM2.3 – Part 2: Cloud evaluation, aerosol radiative forcing, and climate sensitivity
David Neubauer
CORRESPONDING AUTHOR
Institute of Atmospheric and Climate Science, ETH Zurich, Zurich,
Switzerland
Sylvaine Ferrachat
Institute of Atmospheric and Climate Science, ETH Zurich, Zurich,
Switzerland
Colombe Siegenthaler-Le Drian
Center for Climate System Modeling (C2SM), ETH Zurich, Zurich,
Switzerland
Philip Stier
Department of Physics, University of Oxford, Oxford, UK
Daniel G. Partridge
College of Engineering, Mathematics, and Physical Sciences, University
of Exeter, Exeter, UK
Ina Tegen
Leibniz Institute for Tropospheric Research, Leipzig, Germany
Isabelle Bey
Center for Climate System Modeling (C2SM), ETH Zurich, Zurich,
Switzerland
now at: MeteoSwiss, Geneva, Switzerland
Tanja Stanelle
Institute of Atmospheric and Climate Science, ETH Zurich, Zurich,
Switzerland
Harri Kokkola
Finnish Meteorological Institute, Kuopio, Finland
Ulrike Lohmann
Institute of Atmospheric and Climate Science, ETH Zurich, Zurich,
Switzerland
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Latest update: 05 Jul 2025
Short summary
The global aerosol–climate model ECHAM6.3–HAM2.3 as well as the previous model versions ECHAM5.5–HAM2.0 and ECHAM6.1–HAM2.2 are evaluated. The simulation of clouds has improved in ECHAM6.3–HAM2.3. This has an impact on effective radiative forcing due to aerosol–radiation and aerosol–cloud interactions and equilibrium climate sensitivity, which are weaker in ECHAM6.3–HAM2.3 than in the previous model versions.
The global aerosol–climate model ECHAM6.3–HAM2.3 as well as the previous model versions...
