Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol–cloud interactions over the southeast Atlantic Ocean

Diamond, Michael S.; Dobracki, Amie; Freitag, Steffen; Small Griswold, Jennifer D.; Heikkila, Ashley; Howell, Steven G.; Kacarab, Mary E.; Podolske, James R.; Saide, Pablo E.; Wood, Robert

doi:https://doi.org/10.5194/acp-18-14623-2018

Articles | Volume 18, issue 19

https://doi.org/10.5194/acp-18-14623-2018

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

Special issue:

New observations and related modelling studies of the aerosol–cloud–climate...

https://doi.org/10.5194/acp-18-14623-2018

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

Articles | Volume 18, issue 19

Research article

|

12 Oct 2018

Research article |

| 12 Oct 2018

Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol–cloud interactions over the southeast Atlantic Ocean

Michael S. Diamond, Amie Dobracki, Steffen Freitag, Jennifer D. Small Griswold, Ashley Heikkila, Steven G. Howell, Mary E. Kacarab, James R. Podolske, Pablo E. Saide, and Robert Wood

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Final revised paper (published on 12 Oct 2018)
Preprint (discussion started on 29 Jun 2018)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Interactive comment on "Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol–cloud interactions over the southeast Atlantic Ocean" by Michael et al.', Anonymous Referee #3, 20 Jul 2018
- AC1: 'Regarding the "below cloud" definition', Michael Diamond, 26 Jul 2018
- AC2: 'Full response to reviewers (see Supplement)', Michael Diamond, 27 Aug 2018
RC2: 'Review', Anonymous Referee #2, 03 Aug 2018
- AC3: 'Full response to reviewers (see Supplement)', Michael Diamond, 27 Aug 2018
SC1: 'Erratum in Equation 11a', Michael Diamond, 09 Aug 2018

Peer-review completion

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

AR by Michael Diamond on behalf of the Authors (27 Aug 2018) Author's response

ED: Publish subject to minor revisions (review by editor) (24 Sep 2018) by Xiaohong Liu

AR by Michael Diamond on behalf of the Authors (26 Sep 2018) Author's response Manuscript

ED: Publish as is (27 Sep 2018) by Xiaohong Liu

AR by Michael Diamond on behalf of the Authors (27 Sep 2018) Manuscript

Short summary

Smoke from Africa can mix into clouds over the southeast Atlantic and create new droplets, which brightens the clouds, reflects more sunlight, and thus cools the region. Using aircraft data from a NASA field campaign, we find that cloud properties are correlated with smoke as expected when the smoke is below the clouds but not when smoke is above the clouds because it takes several days for clouds to mix smoke downward. We recommend methods that can track clouds as they move for future studies.