Retrieval of optical and physical properties of African dust from  multiwavelength Raman lidar measurements during the SHADOW campaign in  Senegal

Veselovskii, I.; Goloub, P.; Podvin, T.; Bovchaliuk, V.; Derimian, Y.; Augustin, P.; Fourmentin, M.; Tanre, D.; Korenskiy, M.; Whiteman, D. N.; Diallo, A.; Ndiaye, T.; Kolgotin, A.; Dubovik, O.

doi:https://doi.org/10.5194/acp-16-7013-2016

Articles | Volume 16, issue 11

https://doi.org/10.5194/acp-16-7013-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-7013-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 11

Research article

|

08 Jun 2016

Research article |

| 08 Jun 2016

Retrieval of optical and physical properties of African dust from multiwavelength Raman lidar measurements during the SHADOW campaign in Senegal

I. Veselovskii, P. Goloub, T. Podvin, V. Bovchaliuk, Y. Derimian, P. Augustin, M. Fourmentin, D. Tanre, M. Korenskiy, D. N. Whiteman, A. Diallo, T. Ndiaye, A. Kolgotin, and O. Dubovik

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Final revised paper (published on 08 Jun 2016)
Preprint (discussion started on 19 Feb 2016)

Interactive discussion

Status: closed

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

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RC1: 'referee comment', Anonymous Referee #1, 11 Mar 2016
- AC1: 'Response to Reviewer 1', Igor Veselovskii, 04 May 2016
RC2: 'referee comment', Anonymous Referee #3, 18 Mar 2016
- AC3: 'Response to Reviewer 3', Igor Veselovskii, 04 May 2016
RC3: 'Referee Comment to Veselovskii et al.', Anonymous Referee #2, 05 Apr 2016
- AC2: 'Response to reviewer 2', Igor Veselovskii, 04 May 2016

Peer-review completion

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

AR by Igor Veselovskii on behalf of the Authors (04 May 2016) Author's response Manuscript

ED: Reconsider after major revisions (11 May 2016) by Matthias Tesche

Dear Igor,

thank you for providing detailed answer to the comments of the Referees.

I have further comments and suggestions that I would like you to address before I can accept you manuscript for publication in ACP. You can find them listed below.

With best regards,
Matthias

Major Issues
- I agree with Referee #2 that Section 3 is not necessary to convey the message of the paper. It should be omitted; particularly as no optical profiles are presented for this measurement period. Just illustrating the capability of joint measurements does not warrant publication.
- The discussion on page 15, lines 11-21 is not clear. Why are results of 3b+2a more trustworthy than those of 3b+2a+1d? This is an important issue that should be discussed in more detail, even if you already addressed it elsewhere. In the latter case a review of key findings will do.
- Please improve the quality of your figures.
* I suggest to use two sub-figures instead of insets in Figures 6, 7, 12, and 16.
* Add error bars to all points in Figures 6 and 7.
* Use another color for the blue line in Figures 8, 10, and 13. Blue is unrecognizable over water. Also add symbols for the time intervals to the trajectories in the upper part of the figures.
* Use the same color for lines and error bars in Figures 9, 11, and 14.

Minor Issues
- Make sure that your answers to points 14, 18, 19 and 27 of Referee #1 are also mentioned in the manuscript.
- Don't use R as symbol for the lidar ratio as it might be confused with the backscatter ratio (and you also use LR in the text).
- Use the terms backsatter coefficient and extinction coefficient instead of just backscatter and extinction (also in Figures). Always provide the wavelengths pair for the Angstroem exponent (also in Figures).
- When discussion the complex refractive index measured during SAMUM you should refer to T. Mueller et al. (2009): Spectral absorption coefficients and imaginary parts of refractive indices of Saharan dust during SAMUM-1, Tellus B, 10.1111/j.1600-0889.2008.00399.x
- mention the availability of AERONET measurements already in Section 2
- Figure 15 and its discussion are unnecessary and could be omitted.

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AR by Igor Veselovskii on behalf of the Authors (24 May 2016) Author's response Manuscript

ED: Publish as is (25 May 2016) by Matthias Tesche

AR by Igor Veselovskii on behalf of the Authors (26 May 2016)

Short summary

West Africa and the adjacent oceanic regions are very important locations for studying dust properties and their influence on weather and climate. The SHADOW (study of SaHAran Dust Over West Africa) campaign is performing a multiscale and multilaboratory study of aerosol properties and dynamics using a set of in situ and remote sensing instruments at an observation site located at IRD (Institute for Research and Development) in Mbour, Senegal (14° N, 17° W).