Long-term aerosol optical hygroscopicity study at the ACTRIS SIRTA observatory: synergy between ceilometer and in situ measurements

Bedoya-Velásquez, Andrés Esteban; Titos, Gloria; Bravo-Aranda, Juan Antonio; Haeffelin, Martial; Favez, Olivier; Petit, Jean-Eudes; Casquero-Vera, Juan Andrés; Olmo-Reyes, Francisco José; Montilla-Rosero, Elena; Hoyos, Carlos D.; Alados-Arboledas, Lucas; Guerrero-Rascado, Juan Luis

doi:https://doi.org/10.5194/acp-19-7883-2019

Articles | Volume 19, issue 11

https://doi.org/10.5194/acp-19-7883-2019

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

https://doi.org/10.5194/acp-19-7883-2019

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

Articles | Volume 19, issue 11

Research article

|

13 Jun 2019

Research article |

| 13 Jun 2019

Long-term aerosol optical hygroscopicity study at the ACTRIS SIRTA observatory: synergy between ceilometer and in situ measurements

Andrés Esteban Bedoya-Velásquez, Gloria Titos, Juan Antonio Bravo-Aranda, Martial Haeffelin, Olivier Favez, Jean-Eudes Petit, Juan Andrés Casquero-Vera, Francisco José Olmo-Reyes, Elena Montilla-Rosero, Carlos D. Hoyos, Lucas Alados-Arboledas, and Juan Luis Guerrero-Rascado

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Final revised paper (published on 13 Jun 2019)
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Preprint (discussion started on 04 Mar 2019)
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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_Bedoya-Velasquez', Anonymous Referee #1, 01 Apr 2019
- AC1: 'Author_Responses_Referee_#1', Andres Esteban Bedoya-Velasquez, 14 May 2019
RC2: 'review of the manuscript acp-2019-12', Anonymous Referee #2, 01 Apr 2019
- AC2: 'Author_Responses_Referee_#2', Andres Esteban Bedoya-Velasquez, 14 May 2019
AC3: 'Manuscript_supplement_corrected', Andres Esteban Bedoya-Velasquez, 14 May 2019

Peer-review completion

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

AR by Andres Esteban Bedoya-Velasquez on behalf of the Authors (14 May 2019) Author's response Manuscript

ED: Referee Nomination & Report Request started (14 May 2019) by Matthias Tesche

RR by Anonymous Referee #1 (20 May 2019)

Suggestions for revision or reasons for rejection

The authors have improved the manuscript considerably. I have only very few comments before I suggest the manuscript to be published.

Abstract, line 35: change to “This study evidences …” (add "s")
Page 2/3: Discussion on previous measurements combining/comparing in-situ and remote sensing data including hygroscopicity and chemical composition – I would suggest to also cite the study by Rosati et al., 2016 presenting f(RH) values from an airborne campaign and comparing to remote sensing data. It could be added in line 30.
Page 8, lines 6-8: what is meant by “truly far”? it also says right now “perceptual differences greater than 43%” – is “percentage” meant instead? Please rephrase this sentence to make it more clear.
Page 8, line 11: delete “latter”
Page 8, lines 15-16: the newly introduced sentence starting with “However, here, it was…” should be re-written. It is not clear what is meant with “it was used the values of gamma found and the same modelling..”
Page 13, lines 23-24: rephrase “…, becoming more pronounced the negative correlation”. - for example: "showing that xxx has a more pronounced negative correlation than xxx"
Page 13, line 25: add “for” before “each inorganic compound”
Page 13, line 31: change to “Shanghai”

References:

Rosati, B., Herrmann, E., Bucci, S., Fierli, F., Cairo, F., Gysel, M., Tillmann, R., Größ, J., Gobbi, G. P., Di Liberto, L., Di Donfrancesco, G., Wiedensohler, A., Weingartner, E., Virtanen, A., Mentel, T. F., and Baltensperger, U.: Studying the vertical aerosol extinction coefficient by comparing in situ airborne data and elastic backscatter lidar, Atmos. Chem. Phys., 16, 4539-4554, https://doi.org/10.5194/acp-16-4539-2016, 2016.

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RR by Anonymous Referee #2 (24 May 2019)

ED: Publish subject to technical corrections (24 May 2019) by Matthias Tesche

AR by Andres Esteban Bedoya-Velasquez on behalf of the Authors (25 May 2019) Author's response Manuscript

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Short summary

This study is related to the first time hygroscopic enhancement factors retrieved directly for ambient aerosols using remote sensing techniques are combined with online chemical composition in situ measurements to evaluate the role of the different aerosol species in aerosol hygroscopicity at ACTRIS SIRTA observatory. The results showed 8 cases that fulfilled strict criteria over 107 cases identified in this study.