psap-air > Particle soot absorption photometer aboard aircraftInstrument Type(s) > Baseline • Guest

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. It samples from the Counterflow Virtual Impactor (CVI) and isokinetic inlets.



  • Fixed
  • AMF1
  • AMF2
  • AMF3


Brown H, X Liu, R Pokhrel, S Murphy, Z Lu, R Saleh, T Mielonen, H Kokkola, T Bergman, G Myhre, R Skeie, D Watson-Paris, P Stier, B Johnson, N Bellouin, M Schulz, V Vakkari, J Beukes, P van Zyl, S Liu, and D Chand. 2021. "Biomass burning aerosols in most climate models are too absorbing." Nature Communications, 12(1), 10.1038/s41467-020-20482-9.
Research Highlight


Presser C, A Nazarian, D Chand, J Conny, A Sedlacek, and J Hubbe. 2020. "Simultaneous transmission/absorption photometry of particle-laden filters from wildland fires during the Biomass Burning Observation Project (BBOP) field campaign." Journal of Aerosol Science, 150, 10.1016/j.jaerosci.2020.105614.
Research Highlight

Mei F, LA Goldberger, C Flynn, and M Pekour. 2020. Single-Channel Tricolor Absorption Photometer (STAP) Instrument Handbook. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-262.

Mei F, D Dexheimer, J Fast, M Diao, B Geerts, A Bucholtz, L Riihimaki, C Flynn, T Thornberry, T Campos, S Springston, C Kuang, J Tomlinson, and B Schmid. 2020. ARM Aerial Instrument Workshop Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-20-010.

Junghenn Noyes K, R Kahn, A Sedlacek, L Kleinman, J Limbacher, and Z Li. 2020. "Wildfire Smoke Particle Properties and Evolution, from Space-Based Multi-Angle Imaging." Remote Sensing, 12(5), 10.3390/rs12050769.


Jia H, X Ma, F Yu, Y Liu, and Y Yin. 2019. "Distinct Impacts of Increased Aerosols on Cloud Droplet Number Concentration of Stratus/Stratocumulus and Cumulus." Geophysical Research Letters, 46(22), 10.1029/2019GL085081.

Laskin A, RC Moffet, M Fraund, J Wang, MK Gilles, D Knopf, and S China. 2019. Chemical Imaging of Atmospheric Organic Particles in the Southern Great Plains Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-19-018.

Liu J and Z Li. 2019. "Aerosol properties and their influences on low warm clouds during the Two-Column Aerosol Project." Atmospheric Chemistry and Physics, 19(14), 10.5194/acp-19-9515-2019.

Wang J, R Wood, M Jensen, E Azevedo, C Bretherton, D Chand, C Chiu, X Dong, J Fast, A Gettelman, S Ghan, S Giangrande, M Gilles, A Jefferson, P Kollias, C Kuang, A Laskin, E Lewis, X Liu, Y Liu, E Luke, A McComiskey, F Mei, M Miller, A Sedlacek, and R Shaw. 2019. Aerosol and Cloud Experiments in Eastern North Atlantic (ACE-ENA) Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-19-012.


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.

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