aosccn2colaavg

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.

Droplet count by bin size

MOSAIC (Drifting Obs - Study of Arctic Climate); Mobile Facility - MOSAIC (Drifting Obs - Study of Arctic Climate); AMF2

• Latitude: 87.3859550524503
• Longitude: 105.742372199893
• Publication Date: 2019-10-11
• Start Date: 2019-10-11
• End Date: 2020-10-01
• Last Updated: 2022-02-04

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

Janek Uin

Brookhaven National Laboratory

Elisabeth Andrews

University of Colorado

Cynthia Salwen

Brookhaven National Laboratory

Gunnar Senum

Brookhaven National Laboratory

None
Atmospheric Radiation Measurement (ARM) user facility. 2019. Cloud Condensation Nuclei Particle Counter (AOSCCN2COLAAVG). 2019-10-11 to 2020-10-01, ARM Mobile Facility (MOS) MOSAIC (Drifting Obs - Study of Arctic Climate); AMF2 (M1). Compiled by J. Uin, A. Laskin, C. Salwen and G. Senum. ARM Data Center. Data set accessed