ccn-air > Cloud Condensation Nuclei Particle Counter aboard AircraftInstrument Type(s) > Baseline • Guest

The cloud condensation nuclei counter measures the concentration of aerosol particles by drawing an air sample through a column with thermodynamically unstable supersaturated water vapor that can condense onto aerosol particles. Particles that are activated, i.e., grown larger in the process, are counted and sized by an optical particle counter (OPC). In this way the CCN measures activated ambient aerosol particle number concentration as a function of supersaturation.

ARM deploys both ground and airborne versions of this instrument. The AAF only operates the two-column version of the CCN. This handbook covers only the airborne instrument; the ground version is covered by DOE/SC-ARM-TR-168. The main differences between the two are that the airborne CCN operates at fixed supersaturation and adapts thermal efficiency calculation in the data process.

Primary Derived Measurements

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

2021

Nah T, J Yang, J Wang, A Sullivan, and R Weber. 2021. "Fine Aerosol Acidity and Water during Summer in the Eastern North Atlantic." Atmosphere, 12(8), 10.3390/atmos12081040.

2020

Junghenn Noyes K, R Kahn, A Sedlacek, L Kleinman, J Limbacher, and Z Li. 2020. "Wildfire Smoke Particle Properties and Evolution, from Space-Based Multi-Angle Imaging." Remote Sensing, 12(5), 10.3390/rs12050769.

2019

Uin J and F Mei. 2019. Cloud Condensation Nuclei Particle Counter Instrument Handbook - Airborne Version. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-225.

2017

Cecchini M, L Machado, M Andreae, S Martin, R Albrecht, P Artaxo, H Barbosa, S Borrmann, D Fütterer, T Jurkat, C Mahnke, A Minikin, S Molleker, M Pöhlker, U Pöschl, D Rosenfeld, C Voigt, B Wenzierl, and M Wendisch. 2017. "Sensitivities of Amazonian clouds to aerosols and updraft speed." Atmospheric Chemistry and Physics, 17(16), 10.5194/acp-2017-89.

Fridlind A, X Li, D Wu, M van Lier-Walqui, A Ackerman, W Tao, G McFarquhar, W Wu, X Dong, J Wang, A Ryzhkov, P Zhang, M Poellot, A Neumann, and J Tomlinson. 2017. "Derivation of aerosol profiles for MC3E convection studies and use in simulations of the 20 May squall line case." Atmospheric Chemistry and Physics, 17(9), 10.5194/acp-17-5947-2017.
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