aeth: Aethalometer

The aethalometer provides a real-time readout of the concentration of “black” or “elemental” carbon aerosol particles (BC or E) in an air stream. It measures the rate of change of optical transmission through a spot on a filter where aerosol is continuously collected and calculates the concentration of optically absorbing material in the sample. With a built-in reference check of the optical source and a mass flowmeter to monitor air flow rate, the aethalometer calculates the mean BC content of the sampled air stream and provides on-the-spot readout.



  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


PZ, M Alvarado, C Chiu, S DeSzoeke, C Fairall, G Feingold, A Freedman, S Ghan, J Haywood, P Kollias, E Lewis, G McFarquhar, A McComiskey, D Mechem, T Onasch, J Redemann, D Romps, D Turner, H Wang, R Wood, S Yuter, and P Zhu. 2018. Layered Atlantic Smoke Interactions with Clouds (LASIC) Field Campaign Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-18-018.


Evangeliou N, Y Balkanski, W Hao, A Petkov, R Silverstein, R Corley, B Nordgren, S Urbanski, S Eckhardt, A Stohl, P Tunved, S Crepinsek, A Jefferson, S Sharma, J Nøjgaard, and H Skov. 2016. "Wildfires in northern Eurasia affect the budget of black carbon in the Arctic – a 12-year retrospective synopsis (2002–2013)." Atmospheric Chemistry and Physics, 16(12), 10.5194/acp-16-7587-2016.

Sedlacek AJ. 2016. Aethalometer Instrument Handbook. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-TR-156.


Arnott W, K Hamasha, H Moosmuller, P Sheridan, and J Ogren. 2005. "Towards Aerosol Light-Absorption Measurements with a 7-Wavelength Aethalometer: Evaluation with a Photoacoustic Instrument and 3-Wavelength Nephelometer." Aerosol Science and Technology, 39(1), 10.1080/027868290901972.

View All Related Publications