Separating radiative forcing by aerosol–cloud interactions and rapid cloud adjustments in the ECHAM–HAMMOZ aerosol–climate model using the method of partial radiative perturbations

Mülmenstädt, Johannes; Gryspeerdt, Edward; Salzmann, Marc; Ma, Po-Lun; Dipu, Sudhakar; Quaas, Johannes

doi:https://doi.org/10.5194/acp-19-15415-2019

Articles | Volume 19, issue 24

https://doi.org/10.5194/acp-19-15415-2019

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

https://doi.org/10.5194/acp-19-15415-2019

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

Articles | Volume 19, issue 24

Research article

|

17 Dec 2019

Research article |

| 17 Dec 2019

Separating radiative forcing by aerosol–cloud interactions and rapid cloud adjustments in the ECHAM–HAMMOZ aerosol–climate model using the method of partial radiative perturbations

Johannes Mülmenstädt, Edward Gryspeerdt, Marc Salzmann, Po-Lun Ma, Sudhakar Dipu, and Johannes Quaas

Data sets

PRP output used in https://doi.org/10.5194/acp-2018-1304 J. Mülmenstädt, E. Gryspeerdt, M. Salzmann, P.-L. Ma, S. Dipu, and J. Quaas https://doi.org/10.5281/zenodo.3457397

Model code and software

jmuelmen/acp-2018-1304-echam-prp: Zenodo archive release for inclusion in acp-2018-1304 manuscript J. Mülmenstädt, E. Gryspeerdt, M. Salzmann, P.-L. Ma, S. Dipu, and J. Quaas https://doi.org/10.5281/zenodo.3457389

jmuelmen/acp-2018-1304: Zenodo archive release for inclusion in acp-2018-1304 manuscript J. Mülmenstädt, E. Gryspeerdt, M. Salzmann, P.-L. Ma, S. Dipu, and J. Quaas https://doi.org/10.5281/zenodo.3457496

Short summary

The effect of aerosol–cloud interactions (ACIs) on Earth's energy budget continues to be highly uncertain. We decompose the effective radiative forcing by ACIs (ERF_aci) into the instantaneous forcing due to anthropogenic increases in the number of cloud droplets and fast responses of cloud properties to the droplet number perturbation in the ECHAM–HAMMOZ aerosol–climate model. This decomposition maps onto the IPCC's Fifth Assessment Report analysis of ERF_aci more directly than previous work.