Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption reference
<p>A novel reference absorption instrument based on photothermal interferometry – the dual-wavelength photothermal aerosol absorption monitor PTAAM-2<span class="inline-formula"><i>λ</i></span> – and scattering measurements are used to characterize filter phot...
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Copernicus Publications
2025-07-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/18/3073/2025/amt-18-3073-2025.pdf |
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| author | J. Yus-Díez L. Drinovec L. Drinovec L. Alados-Arboledas G. Titos E. Bazo A. Casans D. Patrón X. Querol A. Gonzalez-Romero C. Perez García-Pando C. Perez García-Pando G. Močnik G. Močnik |
| author_facet | J. Yus-Díez L. Drinovec L. Drinovec L. Alados-Arboledas G. Titos E. Bazo A. Casans D. Patrón X. Querol A. Gonzalez-Romero C. Perez García-Pando C. Perez García-Pando G. Močnik G. Močnik |
| author_sort | J. Yus-Díez |
| collection | DOAJ |
| description | <p>A novel reference absorption instrument based on photothermal interferometry – the dual-wavelength photothermal aerosol absorption monitor PTAAM-2<span class="inline-formula"><i>λ</i></span> – and scattering measurements are used to characterize filter photometer artifacts in measurements of absorption coefficients of soot- and dust-dominated aerosol samples within laboratory and ambient campaigns. We provide, for different aerosol types, reference values of the multiple-scattering parameter, quantifying the artifact introduced by the interaction between the light, the particles, and the filter.</p>
<p>The Aethalometer AE33 and the Continuous Light Absorption Photometer (CLAP) were characterized during a laboratory campaign where different soot and mineral dust samples were measured. Furthermore, ambient measurements during a campaign in Granada, Spain, were used to characterize the AE33 and MAAP (Multiangle Absorption Photometer), a pseudo-reference absorption instrument.</p>
<p>The laboratory campaign showed significant wavelength dependence of the calibration parameter, the multiple-scattering parameter <span class="inline-formula"><i>C</i></span>. The <span class="inline-formula"><i>C</i></span> of the AE33 at 450 and 808 nm was 4.08 and 3.95 and 6.25 and 5.27 for propane soot and diesel soot, respectively. For the CLAP, the <span class="inline-formula"><i>C</i></span> was 5.10 and 4.26 and 6.79 and 5.80 for propane and diesel soot, respectively. For the different mineral dust samples analyzed in the laboratory, the <span class="inline-formula"><i>C</i></span> at 450 nm ranged between 2.74 and 3.03 for the AE33 and between 2.50 and 2.80 for the CLAP. The ambient measurements at Granada showed an overall <span class="inline-formula"><i>C</i></span> of 4.72 at 450 nm and of 3.90 at 808 nm for the AE33. The results for both the AE33 and the CLAP show a dependence with the particle size, with fine particles having the highest <span class="inline-formula"><i>C</i></span> values and with the <span class="inline-formula"><i>C</i></span> being reduced and leveling off for larger particles. Both the laboratory and the ambient measurements of the AE33 showed overlapping results.</p>
<p>The cross-sensitivity to scattering was smaller for the CLAP than for the AE33. The values of the cross-sensitivity parameter <span class="inline-formula"><i>m</i><sub>s</sub></span> at 450 and 808 nm were 3.0 % and 1.5 % for the AE33 and 2.4 % and 0.9 % for the CLAP.</p>
<p>The intercomparison of the MAAP with the PTAAM-2<span class="inline-formula"><i>λ</i></span> during the ambient campaign in Granada showed that the MAAP overestimates the absorption coefficients for 47 % at 637 nm and features a cross-sensitivity to scattering of 2.4 %.</p> |
| format | Article |
| id | doaj-art-8b44906d558c48bbb016b50dd93b93cc |
| institution | Kabale University |
| issn | 1867-1381 1867-8548 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj-art-8b44906d558c48bbb016b50dd93b93cc2025-08-20T03:50:17ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482025-07-01183073309310.5194/amt-18-3073-2025Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption referenceJ. Yus-Díez0L. Drinovec1L. Drinovec2L. Alados-Arboledas3G. Titos4E. Bazo5A. Casans6D. Patrón7X. Querol8A. Gonzalez-Romero9C. Perez García-Pando10C. Perez García-Pando11G. Močnik12G. Močnik13Centre for Atmospheric Research, University of Nova Gorica, Ajdovščina, 5270, SloveniaCentre for Atmospheric Research, University of Nova Gorica, Ajdovščina, 5270, SloveniaHaze Instruments d.o.o., Ljubljana, 1000, SloveniaAndalusian Institute for Earth System Research (IISTA-CEAMA), University of Granada, Granada, SpainAndalusian Institute for Earth System Research (IISTA-CEAMA), University of Granada, Granada, SpainAndalusian Institute for Earth System Research (IISTA-CEAMA), University of Granada, Granada, SpainAndalusian Institute for Earth System Research (IISTA-CEAMA), University of Granada, Granada, SpainAndalusian Institute for Earth System Research (IISTA-CEAMA), University of Granada, Granada, SpainInstitute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, 08034, SpainBarcelona Supercomputing Center (BSC), Barcelona, 08034, SpainBarcelona Supercomputing Center (BSC), Barcelona, 08034, SpainICREA, Catalan Institution for Research and Advanced Studies, Barcelona, 08010, SpainCentre for Atmospheric Research, University of Nova Gorica, Ajdovščina, 5270, SloveniaHaze Instruments d.o.o., Ljubljana, 1000, Slovenia<p>A novel reference absorption instrument based on photothermal interferometry – the dual-wavelength photothermal aerosol absorption monitor PTAAM-2<span class="inline-formula"><i>λ</i></span> – and scattering measurements are used to characterize filter photometer artifacts in measurements of absorption coefficients of soot- and dust-dominated aerosol samples within laboratory and ambient campaigns. We provide, for different aerosol types, reference values of the multiple-scattering parameter, quantifying the artifact introduced by the interaction between the light, the particles, and the filter.</p> <p>The Aethalometer AE33 and the Continuous Light Absorption Photometer (CLAP) were characterized during a laboratory campaign where different soot and mineral dust samples were measured. Furthermore, ambient measurements during a campaign in Granada, Spain, were used to characterize the AE33 and MAAP (Multiangle Absorption Photometer), a pseudo-reference absorption instrument.</p> <p>The laboratory campaign showed significant wavelength dependence of the calibration parameter, the multiple-scattering parameter <span class="inline-formula"><i>C</i></span>. The <span class="inline-formula"><i>C</i></span> of the AE33 at 450 and 808 nm was 4.08 and 3.95 and 6.25 and 5.27 for propane soot and diesel soot, respectively. For the CLAP, the <span class="inline-formula"><i>C</i></span> was 5.10 and 4.26 and 6.79 and 5.80 for propane and diesel soot, respectively. For the different mineral dust samples analyzed in the laboratory, the <span class="inline-formula"><i>C</i></span> at 450 nm ranged between 2.74 and 3.03 for the AE33 and between 2.50 and 2.80 for the CLAP. The ambient measurements at Granada showed an overall <span class="inline-formula"><i>C</i></span> of 4.72 at 450 nm and of 3.90 at 808 nm for the AE33. The results for both the AE33 and the CLAP show a dependence with the particle size, with fine particles having the highest <span class="inline-formula"><i>C</i></span> values and with the <span class="inline-formula"><i>C</i></span> being reduced and leveling off for larger particles. Both the laboratory and the ambient measurements of the AE33 showed overlapping results.</p> <p>The cross-sensitivity to scattering was smaller for the CLAP than for the AE33. The values of the cross-sensitivity parameter <span class="inline-formula"><i>m</i><sub>s</sub></span> at 450 and 808 nm were 3.0 % and 1.5 % for the AE33 and 2.4 % and 0.9 % for the CLAP.</p> <p>The intercomparison of the MAAP with the PTAAM-2<span class="inline-formula"><i>λ</i></span> during the ambient campaign in Granada showed that the MAAP overestimates the absorption coefficients for 47 % at 637 nm and features a cross-sensitivity to scattering of 2.4 %.</p>https://amt.copernicus.org/articles/18/3073/2025/amt-18-3073-2025.pdf |
| spellingShingle | J. Yus-Díez L. Drinovec L. Drinovec L. Alados-Arboledas G. Titos E. Bazo A. Casans D. Patrón X. Querol A. Gonzalez-Romero C. Perez García-Pando C. Perez García-Pando G. Močnik G. Močnik Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption reference Atmospheric Measurement Techniques |
| title | Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption reference |
| title_full | Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption reference |
| title_fullStr | Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption reference |
| title_full_unstemmed | Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption reference |
| title_short | Characterization of filter photometer artifacts in soot and dust measurements – laboratory and ambient experiments using a traceably calibrated aerosol absorption reference |
| title_sort | characterization of filter photometer artifacts in soot and dust measurements laboratory and ambient experiments using a traceably calibrated aerosol absorption reference |
| url | https://amt.copernicus.org/articles/18/3073/2025/amt-18-3073-2025.pdf |
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