Standard climate models radiation codes underestimate black carbon radiative forcing

Myhre, G.; Samset, B. H.

doi:https://doi.org/10.5194/acp-15-2883-2015

Articles | Volume 15, issue 5

https://doi.org/10.5194/acp-15-2883-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-2883-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 5

Research article

|

13 Mar 2015

Research article |

| 13 Mar 2015

Standard climate models radiation codes underestimate black carbon radiative forcing

G. Myhre and B. H. Samset

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Final revised paper (published on 13 Mar 2015)
Preprint (discussion started on 20 Oct 2014)

Interactive discussion

Status: closed

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

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- Supplement

RC C8326: 'Review of “Standard climate models radiation codes underestimate black carbon radiative forcing” by Myhre and Samset', Anonymous Referee #1, 21 Oct 2014
- AC C12372: 'Response to Reviewer1', Gunnar Myhre, 24 Feb 2015
RC C8501: 'Very interesting but are the results so general?', Olivier Boucher, 27 Oct 2014
- AC C12375: 'Response to Olivier Boucher', Gunnar Myhre, 24 Feb 2015
RC C8718: 'Comment on "Standard climate models radiation codes underestimate black carbon radiative forcing" (Referee #2)', Anonymous Referee #3, 31 Oct 2014
- AC C12379: 'Response to Reviewer 3', Gunnar Myhre, 24 Feb 2015

Peer-review completion

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

AR by Gunnar Myhre on behalf of the Authors (24 Feb 2015) Author's response Manuscript

ED: Publish as is (27 Feb 2015) by Yves Balkanski

Short summary

Radiative forcing (RF) of black carbon (BC) in the atmosphere is estimated using radiative transfer codes of various complexities. Here we show that the two-stream radiative transfer codes used most in climate models give overly strong forward scattering, leading to enhanced absorption at the surface and overly weak absorption by BC. Such calculations are found to underestimate RF in all sky conditions by 10% for global mean, relative to the more sophisticated multi-stream model.