Performance of microaethalometers: Real-world field intercomparisons from multiple mobile measurement campaigns in different atmospheric environments
| العنوان: | Performance of microaethalometers: Real-world field intercomparisons from multiple mobile measurement campaigns in different atmospheric environments |
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| المؤلفون: | Alfred Wiedensohler, Thomas Müller, Francesca Costabile, Sascha Pfeifer, Kristina Glojek, Luka Drinovec, Honey Dawn C. Alas, Asta Gregorič, Martina Ristorini, Griša Močnik, Kay Weinhold |
| المصدر: | Aerosol and air quality research 20 (2020): 2640–2653. doi:10.4209/aaqr.2020.03.0113 info:cnr-pdr/source/autori:Alas H.D.C.; Muller T.; Weinhold K.; Pfeifer S.; Glojek K.; Gregoric A.; Mocnik G.; Drinovec L.; Costabile F.; Ristorini M.; Wiedensohler A./titolo:Performance of microaethalometers: Real-world field intercomparisons from multiple mobile measurement campaigns in different atmospheric environments/doi:10.4209%2Faaqr.2020.03.0113/rivista:Aerosol and air quality research/anno:2020/pagina_da:2640/pagina_a:2653/intervallo_pagine:2640–2653/volume:20 |
| بيانات النشر: | Chinese Association for Aerosol Research in Taiwan, Taipei , Taiwan, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Instrument intercomparisons, 010504 meteorology & atmospheric sciences, Field (physics), business.industry, Portable instruments, Context (language use), Mobile monitoring, Photometer, Aethalometer, 01 natural sciences, Pollution, law.invention, Atmosphere, Wavelength, Black carbon, law, Environmental Chemistry, Environmental science, business, Absorption (electromagnetic radiation), Quality assurance, 0105 earth and related environmental sciences, Remote sensing |
| الوصف: | Small aethalometers are frequently used to measure equivalent black carbon (eBC) mass concentrations in the context of personal exposure and air pollution mapping through mobile measurements (MM). The most widely used is the microAethalometer (AE51). Its performance in the laboratory and field is well documented, however, there is not sufficient data in the context of its performance in different environments. In this investigation, we present the characterization of the performance of the AE51 through field unit-to-unit intercomparisons (IC), and against a reference absorption photometer from three MM campaigns conducted in drastically different environments. Five IC parameters were considered: i) study area, ii) location of IC, iii) time of day, iv) duration of IC, and v) correction for the filter-loading effect. We can conclude that it is crucial where and how long the IC have been performed in terms of the correlation between the mobile and reference instruments. Better correlations (R2 > 0.8, slope = 0.8) are achieved for IC performed in rural, and background areas for more than 10 minutes. In locations with more homogenous atmosphere, the correction of the loading effect improved the correlation between the mobile and reference instruments. In addition, a newer microAethalometer model (MA200) was characterized in the field under extreme cold conditions and correlated against another MA200 (R2 > 0.8, slope ≈ 1.0), AE51(R2 > 0.9, slope ≈ 0.9), and a stationary Aethalometer (AE33) across all wavelengths (R2 > 0.8, slope ≈ 0.7). For MA200, the loading effect was more pronounced, especially at the lower wavelengths, hence the correction of the loading effect is essential to improve the correlation against the AE33. The MA200 and AE51 proved to be robust and dependable portable instruments for MM applications. Real-world quality assurance of these instruments should be performed through field IC against reference instruments with longer durations in areas of slowly changing eBC concentration. |
| اللغة: | English |
| DOI: | 10.4209/aaqr.2020.03.0113 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::795405925203604b52b34fe156c343bc http://www.scopus.com/record/display.url?eid=2-s2.0-85096475866&origin=inward |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....795405925203604b52b34fe156c343bc |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.4209/aaqr.2020.03.0113 |
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