aosnephdry

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).

Aerosol total light scattering coefficient, nominal green wavelength at dry or reference RH
Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at dry or reference RH

Gunnison, CO, USA; Mobile Facility (SAIL) - Gunnison, CO; Supplemental Facility 2

• Latitude: 38.898361
• Longitude: -106.94314
• Publication Date: 2021-10-27
• Start Date: 2021-10-27
• End Date: 2023-06-16
• Last Updated: 2023-07-02

Gunnison, CO, USA; Mobile Facility (SAIL) - Gunnison, CO; AMF2 (main site for SAIL)

• Latitude: 38.956158
• Longitude: -106.987856
• Publication Date: 2021-09-01
• Start Date: 2021-09-01
• End Date: 2021-10-15
• Last Updated: 2022-04-17

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

Janek Uin

Brookhaven National Laboratory

Elisabeth Andrews

University of Colorado

Christopher Hayes

Brookhaven National Laboratory

Olga Mayol Bracero

Brookhaven National Laboratory

http://dx.doi.org/10.5439/1228051
Atmospheric Radiation Measurement (ARM) user facility. 2021. Nephelometer (AOSNEPHDRY). 2021-10-27 to 2023-06-16, ARM Mobile Facility (GUC) Gunnison, CO; Supplemental Facility 2 (S2). Compiled by A. Koontz, C. Flynn, J. Uin, A. Jefferson, E. Andrews, C. Salwen and C. Hayes. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1228051.