Instrument : Cloud Condensation Nuclei Particle Counter (CCN)

Instrument Categories
Aerosols, Airborne Observations

A cloud condensation nuclei counter consists of a flow column set up to create thermodynamically unstable controlled variable supersaturation conditions in the air sample stream and optically counts the particles that can form cloud droplets as a function of supersaturation.

Output Value-Added Products

This instrument is an input to the following value-added products, which provide improved measurements or derived quantities.

  • aos : Aerosol Observing System (AOS): aerosol data, 1-min
  • aosacsm : AOS: aerosol chemical speciation monitor
  • aosccn : Aerosol Observing System (AOS): cloud condensation nuclei data
  • aosccn100 : Aerosol Observing System (AOS): cloud condensation nuclei data
  • aosccn200 : AOS: Dual Column Cloud Condensation Nuclei Counter
  • aosclap3w : AOS: 3 wavelength Continous Light Absorption Photometer
  • aosco : AOS: Carbon Monoxide Analyzer
  • aoscpc : AOS: condensation particle counter
  • aoscpcf : AOS: Condensation Particle Counter
  • aoscpcu : AOS: Ultrafine Condensation Particle Counter
  • aosmet : AOS: aerosol-based meteorology data
  • aosnephdry : AOS: ambient nephelometer measurements
  • aosnephwet : AOS: humidified nephelometer measurements
  • aosnox : AOS: Oxides of Nitrogen Analyzer
  • aosozone : AOS: O3 measurements
  • aospass3w : AOS: 3 wavelength Photoacoustic Soot Spectrometer
  • aospsap3w : AOS: 3 wavelength Particle Soot Absorption Photometer
  • aossmps : AOS: Scanning-Mobility Particle Sizer
  • aossmpstrh : AOS: Scanning-Mobility Particle Sizer; temperature and RH output
  • aosso2 : AOS: Sulfur Dioxide Analyzer
  • aosuhsas : AOS: Ultra-High Sensitivity Aerosol Spectrometer
  • noaaaos : Aerosol Observing System (AOS): aerosol data, 1-min, mentor-QC applied
  • noaaaosavg : Aerosol Observing System (AOS): aerosol data, 60-min avg, mentor-QC applied

Output Datastreams

  • aosccn : Aerosol Observing System (AOS): cloud condensation nuclei data
  • aosccn100 : Aerosol Observing System (AOS): cloud condensation nuclei data
  • aosccn200 : AOS: Dual Column Cloud Condensation Nuclei Counter
  • noaaaosccn100 : Aerosol Observing System (AOS): cloud condensation nuclei data

Primary Measurements

The following measurements are those considered scientifically relevant.

Locations

  • Southern Great Plains (SGP)
    • Central Facility, Lamont, OK (C1)
  • ARM Mobile Facility (FKB)
    • Black Forest, Germany (M1)
  • ARM Mobile Facility (GRW)
    • Graciosa Island, Azores, Portugal (M1)
  • ARM Mobile Facility (HFE)
    • Shouxian, Anhui, China (M1)
  • ARM Mobile Facility (MAG)
    • Los Angeles, CA to Honolulu, HI - container ship Horizon Spirit (M1)
  • ARM Mobile Facility (NIM)
    • Niamey, Niger (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 (PYE)
    • Point Reyes, CA (M1)
  • 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