Assessment of the sensitivity of core / shell parameters derived using the single-particle soot photometer to density and refractive index

Taylor, J. W.; Allan, J. D.; Liu, D.; Flynn, M.; Weber, R.; Zhang, X.; Lefer, B. L.; Grossberg, N.; Flynn, J.; Coe, H.

doi:https://doi.org/10.5194/amt-8-1701-2015

Articles | Volume 8, issue 4

https://doi.org/10.5194/amt-8-1701-2015

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

https://doi.org/10.5194/amt-8-1701-2015

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

Articles | Volume 8, issue 4

Research article

|

09 Apr 2015

Research article |

| 09 Apr 2015

Assessment of the sensitivity of core / shell parameters derived using the single-particle soot photometer to density and refractive index

J. W. Taylor, J. D. Allan, D. Liu, M. Flynn, R. Weber, X. Zhang, B. L. Lefer, N. Grossberg, J. Flynn, and H. Coe

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Final revised paper (published on 09 Apr 2015)
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Preprint (discussion started on 05 Jun 2014)
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Interactive discussion

Status: closed

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

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RC C1533: 'Review', Anonymous Referee #2, 03 Jul 2014
RC C3634: 'Interactive comment on “Assessment of the sensitivity of core/shell parameters derived using the single-particle soot photometer to density and refractive index” by J.W.Taylor et al.', Anonymous Referee #3, 08 Nov 2014
AC C4918: 'Responses to reviewers' comments', J.W. Taylor, 13 Feb 2015

Short summary

When using the SP2 to report black carbon core/shell coating thickness, the core density and refractive index must be estimated from literature values. We systematically vary the assumed parameters and the instrument calibration, and quantify the effects in the derived coatings. The technique is highly sensitive to the core refractive index but has only a minor sensitivity to the core density and coating refractive index. We identify the most appropriate values to use in future analysis.