The "dual-spot" Aethalometer: an improved measurement of aerosol black carbon with real-time loading compensation

Drinovec, L.; Močnik, G.; Zotter, P.; Prévôt, A. S. H.; Ruckstuhl, C.; Coz, E.; Rupakheti, M.; Sciare, J.; Müller, T.; Wiedensohler, A.; Hansen, A. D. A.

doi:https://doi.org/10.5194/amt-8-1965-2015

Articles | Volume 8, issue 5

https://doi.org/10.5194/amt-8-1965-2015

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

https://doi.org/10.5194/amt-8-1965-2015

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

Articles | Volume 8, issue 5

Research article

|

06 May 2015

Research article |

| 06 May 2015

The "dual-spot" Aethalometer: an improved measurement of aerosol black carbon with real-time loading compensation

L. Drinovec, G. Močnik, P. Zotter, A. S. H. Prévôt, C. Ruckstuhl, E. Coz, M. Rupakheti, J. Sciare, T. Müller, A. Wiedensohler, and A. D. A. Hansen

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Final revised paper (published on 06 May 2015)
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Preprint (discussion started on 30 Sep 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 C3274: 'Interesting new development of an old method', Anonymous Referee #1, 20 Oct 2014
RC C4525: 'Review: Atmos. Meas. Tech. Discuss., 7, 10179–10220, 2014', Anonymous Referee #4, 12 Jan 2015
RC C4596: 'Review of "L. Drinovec et al.: The “dual-spot” Aethalometer: an improved measurement of aerosol black carbon with real-time loading compensation"', Anonymous Referee #5, 16 Jan 2015
AC C5191: 'Response to referees - The “Dual-Spot” Aethalometer: an improved measurement of Aerosol Black Carbon with real-time loading compensation', Griša Močnik, 20 Mar 2015

Short summary

We present a new real-time algorithm for compensation of the filter-loading effect in filter photometers, based on a two parallel spot measurement of optical absorption. This algorithm has been incorporated into the new Aethalometer AE33. Intercomparison studies show excellent reproducibility of the AE33 measurements and very good agreement with post-processed data obtained using earlier aethalometer models and other filter-based absorption photometers.