Articles | Volume 16, issue 11
https://doi.org/10.5194/amt-16-2753-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-16-2753-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
The four-wavelength Photoacoustic Aerosol Absorption Spectrometer (PAAS-4λ)
Franz Martin Schnaiter
CORRESPONDING AUTHOR
Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Kaiserstraße 12, 76021 Karlsruhe, Germany
schnaiTEC GmbH, Werner-von-Siemens-Str. 2–6, 76646 Bruchsal, Germany
Claudia Linke
Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Kaiserstraße 12, 76021 Karlsruhe, Germany
Eija Asmi
Finnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, Finland
Henri Servomaa
Finnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, Finland
Antti-Pekka Hyvärinen
Finnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, Finland
Sho Ohata
Institute for Space–Earth Environmental Research, Nagoya University, Nagoya, Aichi, Japan
Institute for Advanced Research, Nagoya University, Nagoya, Aichi, Japan
Yutaka Kondo
National Institute of Polar Research, Tokyo, Japan
Emma Järvinen
Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Kaiserstraße 12, 76021 Karlsruhe, Germany
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Cited
11 citations as recorded by crossref.
- Evaluating and Improving Light Absorption Retrievals of Black Carbon Using In Situ Polar Nephelometry Q. Xu et al. https://doi.org/10.1021/acs.est.5c05919
- Development of the SiMPLE-PAS: a low-cost, three-wavelength photoacoustic spectrometer for aerosol absorption A. Scott et al. https://doi.org/10.5194/ar-4-103-2026
- Exploring AI potential in optical analysis of organic and elemental carbons: A review of emerging applications in airborne particulate characterization A. Agibayeva et al. https://doi.org/10.1016/j.apr.2025.102839
- Self-calibrating aerosol absorption measurements using co-located TDLAS and tunable-wavelength photothermal interferometry J. Corbin et al. https://doi.org/10.1080/02786826.2025.2469780
- Online Measurements during Simulated Atmospheric Aging Track the Strongly Increasing Oxidative Potential of Complex Combustion Aerosols Relative to Their Primary Emissions R. Cheung et al. https://doi.org/10.1021/acs.estlett.4c00956
- Validation of LEEDR-calculated aerosol extinction using micro- and nano-particle concentration inputs at North American locations M. Dunbar et al. https://doi.org/10.1364/AO.600554
- Field comparison of dual- and single-spot Aethalometers: equivalent black carbon, light absorption, Ångström exponent and secondary brown carbon estimations L. Wu et al. https://doi.org/10.5194/amt-17-2917-2024
- Mass absorption cross section of black carbon for Aethalometer in the Arctic M. Singh et al. https://doi.org/10.1080/02786826.2024.2316173
- Field-deployable cantilever-enhanced photoacoustic instrument for aerosol light absorption measurement at three wavelengths J. Karhu et al. https://doi.org/10.5194/ar-3-113-2025
- Overview of the Alaskan Layered Pollution and Chemical Analysis (ALPACA) Field Experiment W. Simpson et al. https://doi.org/10.1021/acsestair.3c00076
- Mass absorption cross-section of ambient black carbon aerosols - a review E. Asmi et al. https://doi.org/10.1038/s41612-025-01288-2
11 citations as recorded by crossref.
- Evaluating and Improving Light Absorption Retrievals of Black Carbon Using In Situ Polar Nephelometry Q. Xu et al. https://doi.org/10.1021/acs.est.5c05919
- Development of the SiMPLE-PAS: a low-cost, three-wavelength photoacoustic spectrometer for aerosol absorption A. Scott et al. https://doi.org/10.5194/ar-4-103-2026
- Exploring AI potential in optical analysis of organic and elemental carbons: A review of emerging applications in airborne particulate characterization A. Agibayeva et al. https://doi.org/10.1016/j.apr.2025.102839
- Self-calibrating aerosol absorption measurements using co-located TDLAS and tunable-wavelength photothermal interferometry J. Corbin et al. https://doi.org/10.1080/02786826.2025.2469780
- Online Measurements during Simulated Atmospheric Aging Track the Strongly Increasing Oxidative Potential of Complex Combustion Aerosols Relative to Their Primary Emissions R. Cheung et al. https://doi.org/10.1021/acs.estlett.4c00956
- Validation of LEEDR-calculated aerosol extinction using micro- and nano-particle concentration inputs at North American locations M. Dunbar et al. https://doi.org/10.1364/AO.600554
- Field comparison of dual- and single-spot Aethalometers: equivalent black carbon, light absorption, Ångström exponent and secondary brown carbon estimations L. Wu et al. https://doi.org/10.5194/amt-17-2917-2024
- Mass absorption cross section of black carbon for Aethalometer in the Arctic M. Singh et al. https://doi.org/10.1080/02786826.2024.2316173
- Field-deployable cantilever-enhanced photoacoustic instrument for aerosol light absorption measurement at three wavelengths J. Karhu et al. https://doi.org/10.5194/ar-3-113-2025
- Overview of the Alaskan Layered Pollution and Chemical Analysis (ALPACA) Field Experiment W. Simpson et al. https://doi.org/10.1021/acsestair.3c00076
- Mass absorption cross-section of ambient black carbon aerosols - a review E. Asmi et al. https://doi.org/10.1038/s41612-025-01288-2
Saved (final revised paper)
Latest update: 25 Jun 2026
Short summary
Light-absorbing particles from combustion processes are important contributors to climate warming. Their highly variable spectral light absorption properties need to be monitored in the field. Commonly used methods show measurement artefacts that are difficult to correct. We introduce a new instrument that is based on the photoacoustic effect. Long-term operation in the Finnish Arctic demonstrates the applicability of the new instrument for unattended light absorption monitoring.
Light-absorbing particles from combustion processes are important contributors to climate...