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