The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>)
<p>In this paper, the Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<span class="inline-formula"><i>λ</i></span>) is introduced. PAAS-4<span class="inline-formula"><i>λ</i></span> was specifically developed for long-ter...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-06-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/16/2753/2023/amt-16-2753-2023.pdf |
| _version_ | 1827935365151850496 |
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| author | F. M. Schnaiter F. M. Schnaiter C. Linke E. Asmi H. Servomaa A.-P. Hyvärinen S. Ohata S. Ohata Y. Kondo E. Järvinen |
| author_facet | F. M. Schnaiter F. M. Schnaiter C. Linke E. Asmi H. Servomaa A.-P. Hyvärinen S. Ohata S. Ohata Y. Kondo E. Järvinen |
| author_sort | F. M. Schnaiter |
| collection | DOAJ |
| description | <p>In this paper, the Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<span class="inline-formula"><i>λ</i></span>) is introduced. PAAS-4<span class="inline-formula"><i>λ</i></span> was specifically developed for long-term monitoring tasks in (unattended) air quality stations. It uses four wavelengths coupled to a single acoustic resonator in a compact and robust set-up. The instrument has been thoroughly characterized and carefully calibrated in the laboratory using NO<span class="inline-formula"><sub>2</sub></span>/air mixtures and Nigrosin aerosol. It has an ultimate <span class="inline-formula">1<i>σ</i></span> detection limit below 0.1 Mm<span class="inline-formula"><sup>−1</sup></span>, at a measurement precision and accuracy of 3 % and 10 %, respectively. In order to demonstrate the PAAS-4<span class="inline-formula"><i>λ</i></span> suitability for long-term monitoring tasks, the instrument is currently validated at the air quality monitoring station Pallas in Finland, about 140 km north of the Arctic circle. A total of 11 months of PAAS-4<span class="inline-formula"><i>λ</i></span> data from this deployment are presented and discussed in terms of instrument performance. Intercomparisons with the filter-based photometers of a continuous soot monitoring system (COSMOS), the Multi-Angle Absorption Photometer (MAAP), and Aethalometer (AE33) demonstrate the capabilities and value of PAAS-4<span class="inline-formula"><i>λ</i></span>, as well as for the validation of the widely used filter-based instruments.</p> |
| first_indexed | 2024-03-13T07:54:07Z |
| format | Article |
| id | doaj.art-7399f90d6d3e4744b5464369678a0977 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-03-13T07:54:07Z |
| publishDate | 2023-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-7399f90d6d3e4744b5464369678a09772023-06-02T09:22:14ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482023-06-01162753276910.5194/amt-16-2753-2023The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>)F. M. Schnaiter0F. M. Schnaiter1C. Linke2E. Asmi3H. Servomaa4A.-P. Hyvärinen5S. Ohata6S. Ohata7Y. Kondo8E. Järvinen9Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Kaiserstraße 12, 76021 Karlsruhe, GermanyschnaiTEC GmbH, Werner-von-Siemens-Str. 2–6, 76646 Bruchsal, GermanyInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Kaiserstraße 12, 76021 Karlsruhe, GermanyFinnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, FinlandFinnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, FinlandFinnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, FinlandInstitute for Space–Earth Environmental Research, Nagoya University, Nagoya, Aichi, JapanInstitute for Advanced Research, Nagoya University, Nagoya, Aichi, JapanNational Institute of Polar Research, Tokyo, JapanInstitute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Kaiserstraße 12, 76021 Karlsruhe, Germany<p>In this paper, the Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<span class="inline-formula"><i>λ</i></span>) is introduced. PAAS-4<span class="inline-formula"><i>λ</i></span> was specifically developed for long-term monitoring tasks in (unattended) air quality stations. It uses four wavelengths coupled to a single acoustic resonator in a compact and robust set-up. The instrument has been thoroughly characterized and carefully calibrated in the laboratory using NO<span class="inline-formula"><sub>2</sub></span>/air mixtures and Nigrosin aerosol. It has an ultimate <span class="inline-formula">1<i>σ</i></span> detection limit below 0.1 Mm<span class="inline-formula"><sup>−1</sup></span>, at a measurement precision and accuracy of 3 % and 10 %, respectively. In order to demonstrate the PAAS-4<span class="inline-formula"><i>λ</i></span> suitability for long-term monitoring tasks, the instrument is currently validated at the air quality monitoring station Pallas in Finland, about 140 km north of the Arctic circle. A total of 11 months of PAAS-4<span class="inline-formula"><i>λ</i></span> data from this deployment are presented and discussed in terms of instrument performance. Intercomparisons with the filter-based photometers of a continuous soot monitoring system (COSMOS), the Multi-Angle Absorption Photometer (MAAP), and Aethalometer (AE33) demonstrate the capabilities and value of PAAS-4<span class="inline-formula"><i>λ</i></span>, as well as for the validation of the widely used filter-based instruments.</p>https://amt.copernicus.org/articles/16/2753/2023/amt-16-2753-2023.pdf |
| spellingShingle | F. M. Schnaiter F. M. Schnaiter C. Linke E. Asmi H. Servomaa A.-P. Hyvärinen S. Ohata S. Ohata Y. Kondo E. Järvinen The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>) Atmospheric Measurement Techniques |
| title | The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>) |
| title_full | The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>) |
| title_fullStr | The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>) |
| title_full_unstemmed | The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>) |
| title_short | The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4<i>λ</i>) |
| title_sort | four wavelength photoacoustic aerosol absorption spectrometer paas 4 i λ i |
| url | https://amt.copernicus.org/articles/16/2753/2023/amt-16-2753-2023.pdf |
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