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CCN

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ccn: Cloud Condensation Nuclei Particle Counter

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 operates both one- and two-column versions of the CCN.

Measurements

Aerosol concentration
Cloud condensation nuclei

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

Active Instrument Locations

Facility Name Instrument Start Date
Lamont, OK (Extended and Co-located with C1) 2016-11-16
Graciosa Island, Azores, Portugal 2010-07-05
MOSAIC (Drifting Obs - Study of Arctic Climate); AMF2 2019-03-27

2019

Yang F, R McGraw, E Luke, D Zhang, P Kollias, and A Vogelmann. 2019. "A new approach to estimate supersaturation fluctuations in stratocumulus cloud using ground-based remote-sensing measurements." Atmospheric Measurement Techniques, 12(11), 10.5194/amt-12-5817-2019.
Research Highlight

Varble A, S Nesbitt, P Salio, E Avila, P Borque, P DeMott, G McFarquhar, S van den Heever, E Zipser, D Gochis, R Houze, M Jensen, P Kollias, S Kreidenweis, R Leung, K Rasmussen, D Romps, and C Williams. 2019. Cloud, Aerosol, and Complex Terrain Interactions (CACTI) Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-19-028.

Zhang J and P Zuidema. 2019. "The diurnal cycle of the smoky marine boundary layer observed during August in the remote southeast Atlantic." Atmospheric Chemistry and Physics, 19(23), 10.5194/acp-19-14493-2019.
Research Highlight

Li J, H Chen, Z Li, P Wang, X Fan, W He, and J Zhang. 2019. "Analysis of Low-level Temperature Inversions and Their Effects on Aerosols in the Lower Atmosphere." Advances in Atmospheric Sciences, 36(11), 10.1007/s00376-019-9018-9.

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.

Jensen M, E Bruning, D Collins, A Fridlind, P Kollias, C Kuang, D Rosenfeld, A Ryzhkov, A Varble, SD Brooks, S Collis, E Defer, J Fan, J Flynn, S Giangrande, R Griffin, J Hu, R Jackson, M Kumjian, T Logan, T Matsui, G McFarquhar, C Nowotarski, J Quaas, M Oue, R Sheesley, J Snyder, P Stier, S Usenko, S van den Heever, M van Lier Walqui, Y Wang, Y Xu, and G Zhang. 2019. Tracking Aerosol Convection Interactions ExpeRiment (TRACER) Science Plan. Ed. by Robert Stafford, DOE/SC-ARM-19-017.

Riemer N, A Ault, M West, R Craig, and J Curtis. 2019. "Aerosol Mixing State: Measurements, Modeling, and Impacts." Reviews of Geophysics, 57, 10.1029/2018RG000615.
Research Highlight

2018

Zheng G, Y Wang, A Aiken, F Gallo, M Jensen, P Kollias, C Kuang, E Luke, S Springston, J Uin, R Wood, and J Wang. 2018. "Marine boundary layer aerosol in the eastern North Atlantic: seasonal variations and key controlling processes." Atmospheric Chemistry and Physics, 18(23), doi:10.5194/acp-18-17615-2018.
Research Highlight

Gordon H, P Field, S Abel, M Dalvi, D Grosvenor, A Hill, B Johnson, A Miltenberger, M Yoshioka, and K Carslaw. 2018. "Large simulated radiative effects of smoke in the south-east Atlantic." Atmospheric Chemistry and Physics, 18(20), 10.5194/acp-18-15261-2018.

Borque P, E Luke, P Kollias, and F Yang. 2018. "Relationship Between Turbulence and Drizzle in Continental and Marine Low Stratiform Clouds." Journal of the Atmospheric Sciences, 75(12), 10.1175/JAS-D-18-0060.1.
Research Highlight

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