aosccn2colb

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.

Number concentration of CCN

Southern Great Plains - Lamont, OK (Extended and Co-located with C1)

• Latitude: 36.604937
• Longitude: -97.485561
• Publication Date: 2017-04-11
• Start Date: 2017-04-11
• End Date: 2023-10-18
• Last Updated: 2024-05-17

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

Elisabeth Andrews

University of Colorado

https://doi.org/10.5439/1323893
Atmospheric Radiation Measurement (ARM) user facility. 2017. Cloud Condensation Nuclei Particle Counter (AOSCCN2COLB). 2017-04-11 to 2023-10-18, Southern Great Plains (SGP) Lamont, OK (Extended and Co-located with C1) (E13). Compiled by A. Koontz, J. Uin, E. Andrews, O. Enekwizu, C. Hayes and C. Salwen. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1323893.