Continuous light absorption photometer for long-term studies

Ogren, John A.; Wendell, Jim; Andrews, Elisabeth; Sheridan, Patrick J.

doi:https://doi.org/10.5194/amt-10-4805-2017

Articles | Volume 10, issue 12

https://doi.org/10.5194/amt-10-4805-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-10-4805-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 10, issue 12

Research article

|

11 Dec 2017

Research article |

| 11 Dec 2017

Continuous light absorption photometer for long-term studies

John A. Ogren, Jim Wendell, Elisabeth Andrews, and Patrick J. Sheridan

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Final revised paper (published on 11 Dec 2017)
Supplement to the final revised paper
Preprint (discussion started on 27 Jul 2017)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review - Continuous Light Absorption Photometer for Long-Term Studies by Ogren et al.', Anonymous Referee #3, 18 Aug 2017
RC2: 'Goood paper, a few questions only', Anonymous Referee #2, 24 Aug 2017
RC3: 'Review amt-2017-212', Anonymous Referee #1, 31 Aug 2017
AC1: 'Final Response', John Ogren, 04 Oct 2017

Peer-review completion

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

AR by John Ogren on behalf of the Authors (04 Oct 2017)

ED: Publish subject to minor revisions (review by editor) (21 Oct 2017) by Willy Maenhaut

The authors have reasonably addressed the comments of the three anonymous referees and they have modified their manuscript accordingly. However, alterations are needed in the main text before the manuscript can be published in AMT.

Page 1, line 7: Replace "of aerosol" by "of the aerosol".
Page 1, line 27: Replace "measuring aerosol" by "measuring the aerosol".
Page 1, line 30: Replace "of aerosol" by "of the aerosol".
Page 1, line 31: Replace "at single" by "at a single".
Page 1, line 32: Replace "doesn't yet" by "does not yet".
Page 2, line 1: Insert a comma between "green" and "red".
Page 2, lines 18, 20 and 21: Replace the period at the end of the line by a semicolon.
Page 2, line 25: Replace "calculating light" by "calculating the light".
Page 3, line 14: "in the uncertainties of ..." is unclear. Should it perhaps be "and the uncertainties of ..." instead?
Page 5, line 6: Replace "sample efficiency" by "sampling efficiency".
Page 5, line 15: Replace "Spot areas" by "The spot areas".
Page 5, line 23: Replace "taken with" by "taken with a".
Page 5, line 26: Replace "of spot" by "of the spot".
Page 5, line 28: Replace "unaware of" by "unaware of the".
Page 5, line 29: Replace "of spot" by "of the spot".
Page 6, line 4: Replace "of attenuation" by "of the attenuation".
Page 6, line 6: Replace "calculating precision" by "calculating the precision".
Page 6, line 9: Replace "of repeated" by "of the repeated".
Page 6, line 12: Replace "of CLAP" by "of the CLAP".
Page 6, line 14: Replace "Noise" by "The noise" and replace "when" by "when the".
Page 6, line 15: Replace "CLAP sample" by "the CLAP sample".
Page 6, line 33: Replace "Input data" by "The input data".
Page 6, line 38: Replace "Overall" by "The overall".
Page 7, line 12: Replace "of PSAP" by "of the PSAP".
Page 7, line 19: Replace "that CLAP" by "that the CLAP".
Page 7, line 33: Replace "of attenuation" by "of the attenuation".
Page 8, line 6: Replace "to uncertainties" by "to the uncertainties".
Page 8, line 14: Replace "range of" by "range of the".
Page 8, line 18: Replace "both PM10" by "both the PM10".
Page 8, line 30: Replace "of CLAP" by "of the CLAP".
Page 9, line 2: Replace "Results" by "The results".
Page 9, line 15: Replace "of attenuation" by "of the attenuation".
Page 10, line 3: Replace "of attenuation" by "of the attenuation".
Page 10, line 14: Replace "of attenuation" by "of the attenuation".
Page 10, line 23: Abbreviations and acronyms, here "EBC", should be defined (written full-out) when first used.
Page 10, line 32: Replace "determining aerosol" by "determining the aerosol".
Pages 12-14, References: There should be a comma after the abbreviated journal name and there should also be a comma (and not a semicolon) after the journal volume.
Page 13, line 36: Replace "S. R., and" by "S. R. and".
Page 14, lines 1-2: "Virkkula, 2010" should come before "Virkkula et al., 2005".
Page 15, heading of Table 1: Replace "of light" by "of the light".
Page 15, heading of Table 2: Replace "of CLAP" by "of the CLAP".
Page 16, caption of Figure 2: Replace "sample efficiency" by "sampling efficiency".
Page 17, caption of Figure 3: Replace "of light source for blue, green, and red channels, and spectral sensitivity of detector" by "of the light source for the blue, green, and red channels, and spectral sensitivity of the detectors".
Page 19, caption of Figure 5, first line: Replace "of attenuation" by "of the attenuation" and replace "Line" by "The line".
Page 19, caption of Figure 5, second line: Replace "of regression" by "of the regression".
Page 20, caption of Figure 6, first line: Replace "of attenuation" by "of the attenuation" and replace "Thick" by "The thick".
Page 20, caption of Figure 6, second line: Replace "thin" by "the thin".
Page 20, caption of Figure 6, third line: Replace "red line represents" by "the red line represents the" and replace "blue" by "the blue".
Page 20, caption of Figure 6, fourth line: Replace "represents approximate" by "represents the approximate".
Page 21, caption of Figure 7, first line: Replace "of attenuation" by "of the attenuation".
Page 22, caption of Figure 8, first line: Replace "of absorption" by "of the absorption" and replace "of attenuation" by "of the attenuation".
Page 22, caption of Figure 8, second line: Replace "values of" by "values of the".
Page 22, caption of Figure 8, third line: Place a period at the end of the line.
Page 23, caption of Figure 9, first line: Replace "uncertainty of" by "uncertainty of the".
Page 24, caption of Figure 10, sixth line: Replace "in gray" by "in gray and dashed".
Page 25, caption of Figure 11, second line: Delete the "4" at the end of the line.

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AR by John Ogren on behalf of the Authors (23 Oct 2017)

ED: Publish as is (03 Nov 2017) by Willy Maenhaut

AR by John Ogren on behalf of the Authors (03 Nov 2017)

Short summary

A new photometer for continuous measurements of aerosol light absorption coefficient is described, optimized for long-term studies of the climate-forcing properties of aerosols. The device is small, sensitive, precise, and simple to operate. It is suitable for long-term measurements at remote locations and is currently in operation at about two dozen sites worldwide.