Aerosol and physical atmosphere model parameters are both important sources of uncertainty in aerosol ERF

Regayre, Leighton A.; Johnson, Jill S.; Yoshioka, Masaru; Pringle, Kirsty J.; Sexton, David M. H.; Booth, Ben B. B.; Lee, Lindsay A.; Bellouin, Nicolas; Carslaw, Kenneth S.

doi:https://doi.org/10.5194/acp-18-9975-2018

Articles | Volume 18, issue 13

https://doi.org/10.5194/acp-18-9975-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-9975-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 13

Research article

|

13 Jul 2018

Research article |

| 13 Jul 2018

Aerosol and physical atmosphere model parameters are both important sources of uncertainty in aerosol ERF

Leighton A. Regayre, Jill S. Johnson, Masaru Yoshioka, Kirsty J. Pringle, David M. H. Sexton, Ben B. B. Booth, Lindsay A. Lee, Nicolas Bellouin, and Kenneth S. Carslaw

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Final revised paper (published on 13 Jul 2018)
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Preprint (discussion started on 01 Mar 2018)
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Interactive discussion

Status: closed

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

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RC1: 'Review', Anonymous Referee #2, 04 Mar 2018
RC2: 'excellent manuscript', Steven J Ghan, 12 Mar 2018
AC1: 'AC; Author comment in response to reviewers', L. A. Regayre, 04 Jun 2018

Peer-review completion

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

AR by Leighton A. Regayre on behalf of the Authors (06 Jun 2018) Author's response Manuscript

ED: Publish as is (15 Jun 2018) by Ashu Dastoor

AR by Leighton A. Regayre on behalf of the Authors (25 Jun 2018) Manuscript

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Short summary

We sample uncertainty in one climate model by perturbing aerosol and physical atmosphere parameters. Our uncertainty is comparable to multi-model studies. Atmospheric parameters cause most of the top-of-atmosphere flux uncertainty; uncertainty in aerosol forcing is mostly caused by aerosols: both are important. The strongest aerosol forcings are inconsistent with top-of-atmosphere flux observations. Better constraint requires observations that share causes of uncertainty with aerosol forcing.