AOS: Cloud Condensation Nuclei Counter (Dual Column), ramping mode averaged

Active Dates
2016.04.25 - 2017.04.21

Measurement Categories
Aerosols, Cloud Properties

Originating Instrument
Cloud Condensation Nuclei Particle Counter (CCN)


Only measurements considered scientifically relevant are shown below by default.

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Measurement Units Variable
Mean number concentration of N_CCN 1/cm^3 N_CCN ( time )
Droplet count by bin size count/s N_CCN_dN ( time, droplet_size )
N_CCN calculated excluding counts below "first_bin_used" count N_CCN_reduced ( time )
Volumetric flowrate of sample air cm^3/min Q_sample ( time )
aerosol particle number concentration 1/cm^3 aerosol_number_concentration ( time )
Altitude above mean sea level m alt
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Size bins for CCN droplets um droplet_size ( droplet_size )
Droplet bin bounds droplet_size_bounds ( droplet_size, bound )
First bin used in N_CCN_reduced calculation. unitless first_bin_used ( time )
North latitude degree_N lat
East longitude degree_E lon
Number of particles that are larger than 10um count overflow ( time )
Quality check results on field: Mean number concentration of N_CCN unitless qc_N_CCN ( time )
Supersaturation set point values % setpoint ( setpoint )
Mean calculated supersaturation values for a fixed supersaturation set point. % supersaturation_calculated ( time )
Time offset from midnight time ( time )
Time cell bounds time_bounds ( time, bound )
Time offset from base_time time_offset ( time )


ARM Mobile Facility
ASIM1 Browse DataAscension Island, South Atlantic Ocean; AMF1


Cynthia Salwen
Brookhaven National Laboratory

Janek Uin
Brookhaven National Laboratory

Gunnar Senum
Brookhaven National Laboratory
(631) 344-3896

Stephen Springston
Brookhaven National Laboratory
(631) 344-4477

Anne Jefferson
(303) 497-6493

Elisabeth Andrews
University of Colorado
(303) 497-5171