Cloud Condensation Nuclei number concentrations over the Southern Ocean during the austral summer of 2016/2017 on board the Antarctic Circumnavigation Expedition (ACE).

Data file(s):ACESPACE_cloud_condensation_nuclei_critical_diameter_SS015.csv,
ACESPACE_cloud_condensation_nuclei_critical_diameter_SS020.csv,
ACESPACE_cloud_condensation_nuclei_critical_diameter_SS030.csv,
ACESPACE_cloud_condensation_nuclei_critical_diameter_SS050.csv,
ACESPACE_cloud_condensation_nuclei_critical_diameter_SS100.csv

datetime(UTC): Date and time of the start of the 300-second long interval, the N_CCN value is given for, in ISO 8601 format: YYYY-MM-DDThh:mm:ss+00:00. [UTC]
latitude(degree N): Latitude of the ship's position in decimal degrees North at the start of the averaged time period. [decimal degrees north]
longitude(degree E): Longitude of the ship's position in decimal degrees East at the start of the averaged time period. [decimal degrees east]
critical_diameter_of_cloud_condensation_nuclei_at_stp_in_air(m): Critical diameter at given supersaturation as averaged value for time period from time stamp to 300 seconds after the time stamp [meter]
supersaturation(%): Level of supersaturation inside the measurement instrument for the time period the D_crit value is given for. [precent]

Null values: nan