Capabilities > Instruments > nephelometer

aosnephdry1m

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AOS Dry Nephelometer 1 Minute Averages, with calibrations applied at b1-level and above (aosnephdry1m)

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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).

Measurements

Aerosol total light scattering coefficient, nominal red wavelength at dry or reference RH

Location

North Slope Alaska - External Data (satellites and others)
  • Latitude: None
  • Longitude: None
  • Publication Date: 2015-10-01
  • Start Date: 2015-10-01
  • End Date: 2021-08-31
  • Last Updated: 2024-02-06

Instrument Mentor

https://www.arm.gov/connect-with-arm/organization/instrument-mentors/list#nephelometer

Elisabeth Andrews
University of Colorado

DOI / Citation

https://doi.org/10.5439/1984586
Atmospheric Radiation Measurement (ARM) user facility. 2015. Nephelometer (AOSNEPHDRY1M). 2015-10-01 to 2021-08-31, North Slope Alaska (NSA) External Data (satellites and others) (X1). Compiled by E. Andrews, J. Uin, C. Salwen, G. Senum, C. Hayes and O. Mayol Bracero. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1984586.