psap: Particle Soot Absorption Photometer

The particle soot absorption photometer collects aerosol particles on a substrate and measures the change in light transmission relative to a reference filter. Bulk particle absorption is derived after correcting for scattering effects.

The PSAP is part of the Aerosol Observing System (AOS).



  • Fixed
  • AMF1
  • AMF2
  • AMF3

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Forestieri S, T Helgestad, A Lambe, L Renbaum-Wolff, D Lack, P Massoli, E Cross, M Dubey, C Mazzoleni, J Olfert, A Sedlacek III, A Freedman, P Davidovits, T Onasch, and C Cappa. 2018. "Measurement and modeling of the multiwavelength optical properties of uncoated flame-generated soot." Atmospheric Chemistry and Physics, 18(16), 10.5194/acp-18-12141-2018.

Springston SR. 2018. Particle Soot Absorption Photometer (PSAP) Instrument Handbook. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-TR-176.

Creamean J, M Maahn, G de Boer, A McComiskey, A Sedlacek, and Y Feng. 2018. "The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska." Atmospheric Chemistry and Physics, 18(2), 10.5194/acp-18-555-2018.


Sinha P, Y Kondo, M Koike, J Ogren, A Jefferson, T Barrett, R Sheesley, S Ohata, N Moteki, H Coe, D Liu, M Irwin, P Tunved, P Quinn, and Y Zhao. 2017. "Evaluation of ground-based black carbon measurements by filter-based photometers at two Arctic sites." Journal of Geophysical Research: Atmospheres, 122(6), 10.1002/2016JD025843.

Kassianov E, M Pekour, C Flynn, L Berg, J Beranek, A Zelenyuk, C Zhao, L Leung, P Ma, L Riihimaki, J Fast, J Barnard, A Hallar, I McCubbin, E Eloranta, A McComiskey, and P Rasch. 2017. "Large Contribution of Coarse Mode to Aerosol Microphysical and Optical Properties: Evidence from Ground-based Observations of a Trans-Pacific Dust Outbreak at a High-Elevation North American Site." Journal of the Atmospheric Sciences, 74(5), 10.1175/JAS-D-16-0256.1.
Research Highlight

Zhou S, S Collier, D Jaffe, N Briggs, J Hee, A Sedlacek III, L Kleinman, T Onasch, and Q Zhang. 2017. "Regional influence of wildfires on aerosol chemistry in the western US and insights into atmospheric aging of biomass burning organic aerosol." Atmospheric Chemistry and Physics, 17(3), 10.5194/acp-17-2477-2017.

Painemal D, J Chiu, P Minnis, C Yost, X Zhou, M Cadeddu, E Eloranta, E Lewis, R Ferrare, and P Kollias. 2017. "Aerosol and cloud microphysics covariability in the northeast Pacific boundary layer estimated with ship-based and satellite remote sensing observations." Journal of Geophysical Research: Atmospheres, 122(4), 10.1002/2016JD025771.
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Kalesse H, G DeBoer, A Solomon, M Oue, M Ahlgrimm, D Zhang, M Shupe, E Luke, and A Protat. 2016. "Understanding Rapid Changes in Phase Partitioning between Cloud Liquid and Ice in Stratiform Mixed-Phase Clouds: An Arctic Case Study." Monthly Weather Review, 144(12), 10.1175/mwr-d-16-0155.1.
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Presser C, A Nazarian, JM Conny, D Chand, A Sedlacek, and JM Hubbe. 2016. "Absorption/transmission measurements of PSAP particle-laden filters from the Biomass Burning Observation Project (BBOP) field campaign." Aerosol Science and Technology, 51(4), 10.1080/02786826.2016.1267856.

Cappa CD, KR Kolesar, X Zhang, DB Atkinson, MS Pekour, RA Zaveri, A Zelenyuk, and Q Zhang. 2016. "Understanding the optical properties of ambient sub- and supermicron particulate matter: results from the CARES 2010 field study in northern California." Atmospheric Chemistry and Physics, 16(10), 10.5194/acp-16-6511-2016.

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