Instrument : Nephelometer (NEPHELOMETER)

Instrument Categories
Aerosols

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

Output Datastreams

  • aosnephdry : AOS: ambient nephelometer measurements
  • aosnephwet : AOS: humidified nephelometer measurements

Primary Measurements

The following measurements are those considered scientifically relevant.

Locations

  • Southern Great Plains (SGP)
    • Central Facility, Lamont, OK (C1)
  • ARM Mobile Facility (MAG)
    • Los Angeles, CA to Honolulu, HI - container ship Horizon Spirit (M1)
  • ARM Mobile Facility (PGH)
    • ARIES Observatory, Nainital, Uttarkhand, India (M1)
  • ARM Mobile Facility (PVC)
    • Highland Center, Cape Cod MA; AMF 1 (M1)
    • Highland Center, Cape Cod MA; MAOS (S1)
  • ARM Mobile Facility (SBS)
    • Steamboat Springs CO, Christie Peak (S2)

Contact(s)

Gunnar Senum
(631) 344-3896
gsenum@bnl.gov

Stephen Springston
(631) 344-4477
srs@bnl.gov

Anne Jefferson
(303) 497-6493
anne.jefferson@noaa.gov