This is the metadata for: MUMBA_CCNC_2013-01-13_2013-02-15 (doi:10.1594/PANGAEA.871984)


Measurement: Total number concentration of Cloud Condensation Nuclei (CCN) activated at a supersaturation of 0.55%
Instrument: Droplet Measurement Technologies CCN-100
Owner: CSIRO
Campaign: MUMBA
Location: Main measurement site - Nissan Hut Kids Campus / Campus East, Wollongong (-34.3972, 150.8996)
Dates of operation: 16-Jan-2013 to 15-Feb-2013
Original measurement time resolution: 1 second
Averaging time: 1 hour
Units: particles/cm3

Inlet/Installation detail: Air was sampled through an 8 m copper bypass running at a flow rate of ~15L/minute. Inlet height was ~10m. This bypass was shared between the CPC, CCNC and SMPS instruments. Inlet flow to CCNC was 475.1 +- 3.7 ccm
Data/sample collection detail: The instrument was operated at a supersaturation of 0.5% (0.55% after pressure correction)
 

Issues: The instrument was shut down due to excessive heat on 18-Jan-2013 and 19-Jan-2013
Corrections: Data was corrected for changes in inlet flow rate (as measured periodically using an external flowmeter) - 5% increase in number concentration. Inlet losses were calculated as 10% loss. Number concentrations were divided by 0.9. 
Uncertainty: Generally <1%

Missing data reported as empty fields


File headers:
date (yyyy-mm-ddTHH:MM:SSz)
CCN (particles/cm3)		mean hourly total number concentration of Cloud Condensation Nuclei (CCN) activated at a supersaturation of 0.55%
Uncertainty (particles/cm3)	uncertainty on mean hourly total number concentration of Cloud Condensation Nuclei (CCN) activated at a supersaturation of 0.55%



data version: 17-Aug-2015

Contact(s):
Ruhi Humphries ruhi.humphries@csiro.au
Melita Keywood melita.keywood@csiro.au