nephelometer: Nephelometer

The nephelometer measures the total scattering and hemispheric backscattering of aerosol. Nephelometers are deployed in pairs, with one measuring the ambient conditions and the other measuring the scattering as a function of slowly increasing or decreasing relative humidity (RH). The combination can then be used to derive the hygroscopic growth factor as a function of RH: f(RH).

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



  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


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.

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.


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. ONLINE.

Martins JV. 2016. Airborne Open Polar/Imaging Nephelometer for Ice Particles in Cirrus Clouds and Aerosols Field Campaign Report. DOE ARM Climate Research Facility. DOE/SC-ARM-15-063.

Uin J. 2016. Nephelometer Handbook . Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-TR-165.


Atkinson DB, JG Radney, and JW Harworth. 2010. Aerosol Optical Properties at the Ground Sites during the 2010 CARES Field Campaign. Presented at Fall American Geophysical Union Meeting. San Francisco, CA.


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.


Bergin MH, JA Ogren, RN Halthore, S Nemesure, and SE Schwartz. 1997. Aerosol Optical Depth Estimates Based on Nephelometer Measurements at the Atmospheric Radiation Measurement Program Southern Great Plains Site. In Proceedings of the Sixth Atmospheric Radiation Measurement (ARM) Science Team Meeting, CONF--9603149, Washington,D.C.: US Department of Energy.

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