The global aerosol–climate model ECHAM6.3–HAM2.3 – Part 2: Cloud evaluation, aerosol radiative forcing, and climate sensitivity

Neubauer, David; Ferrachat, Sylvaine; Siegenthaler-Le Drian, Colombe; Stier, Philip; Partridge, Daniel G.; Tegen, Ina; Bey, Isabelle; Stanelle, Tanja; Kokkola, Harri; Lohmann, Ulrike

doi:https://doi.org/10.5194/gmd-12-3609-2019

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.

https://doi.org/10.5194/gmd-12-3609-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 8

Model evaluation paper

|

21 Aug 2019

Model evaluation paper |

| 21 Aug 2019

The global aerosol–climate model ECHAM6.3–HAM2.3 – Part 2: Cloud evaluation, aerosol radiative forcing, and climate sensitivity

David Neubauer, Sylvaine Ferrachat, Colombe Siegenthaler-Le Drian, Philip Stier, Daniel G. Partridge, Ina Tegen, Isabelle Bey, Tanja Stanelle, Harri Kokkola, and Ulrike Lohmann

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Final revised paper (published on 21 Aug 2019)
Supplement to the final revised paper
Preprint (discussion started on 06 Mar 2019)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of Neubauer et al., The global aerosol-climate model ECHAM6.3-HAM2.3 – Part 2: Cloud evaluation, aerosol radiative forcing and climate sensitivity', Anonymous Referee #1, 25 Apr 2019
RC2: 'Review of “The global aerosol-climate model ECHAM6.3-HAM2.3 – Part 2: Cloud evaluation, aerosol radiative forcing and climate sensitivity” by Neubauer et al.', Anonymous Referee #2, 27 Apr 2019
AC1: 'Response to reviewers comments', David Neubauer, 28 Jun 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by David Neubauer on behalf of the Authors (28 Jun 2019) Author's response Manuscript

ED: Publish as is (09 Jul 2019) by Samuel Remy

AR by David Neubauer on behalf of the Authors (10 Jul 2019) Manuscript

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.