This is the metadata for: MUMBA_HiVol_2012-12-22_2013-02-15 (doi:10.1594/PANGAEA.871987) Measurement: Elemental carbon and organic carbon content of PM2.5 aerosol size fraction Instrument: Ecotech 3000 high volume (HiVol) sampler fitted with a PM2.5 size-selective inlet Owner: CSIRO Campaign: MUMBA Location: Main measurement site - Nissan Hut Kids Campus / Campus East, Wollongong (-34.3972, 150.8996) Dates of operation: 22-Jan-2013 to 15-Feb-2013 Original measurement time resolution: 04:00-8:59 and 10:00-17:59 local standard time (UTC+10) Averaging time: 5 or 8 hours Units: ug C/m3 Inlet/Installation detail: The ambient flow rate through the inlet was 67.8 m3/hr and was controlled with a mass flow controller. Data/sample collection detail: Samples were collected on 250 mm x 200 mm Pall tissuquartz filters prebaked at 600°C for 4 hours to minimize adsorbed organic vapours. The filters were stored in sealed containers within a freezer before and after sampling. Data/sample analysis detail: Elemental carbon (EC) and organic carbon (OC) analysis was performed on the PM2.5 HiVol filters using a DRI Model 2001A Thermal-Optical Carbon Analyzer following the IMPROVE-A temperature protocol (Chow et al., 2007). Concentrations are reported at ambient conditions and local time (UTC+10). Calibration OC EC: End-of-run calibration is performed as part of each measurement by automatic injection of a known quantity of He/CH4 calibration gas. In addition at the beginning and end of a batch of analytical runs (i.e. start and end of each day) calibration injections of He/CH4 and He/CO2 are carried out. Finally every 6 months a full instrument calibration is performed using KHP as the carbon source and a calibration factor is determined, that is used to calculate C concentrations Calibration HiVol sampler flow rate: calibrated by determining the pressure drop through a top-loading Orifice Plates flow rate transfer standard. Precision OC EC: based on 68 replicate analyses, OC and EC precision is 1% Precision HiVol sampler flow rate: 1% of reading (High Volume Air Sampler 3000 User Manual 2000) Accuracy OC EC: reported as 10% TC in Karanasiou et al. (2011) Issues: none reported Corrections: The sample concentrations have been blank corrected. Uncertainty: OC and EC < 15% (combining analytical and sample collection precision and accuracy). Detection Limit: The method detection limits determined from the standard variation in the blank filters, 0.18 µg C/cm2 for OC and 0.00 µg C/cm2 for EC (none detected on the blanks). Missing data reported as empty fields Data below detection limit: none File headers: Time_ON time sampling started yyyy-mm-ddTHH:MM:SSz Time_OFF time sampling ended yyyy-mm-ddTHH:MM:SSz EC ugC/m3 elemental carbon in micrograms of carbon per metre cubed OC ugC/m3 organic carbon in micrograms of carbon per meter cubed TC ugC/m3 total carbon (sum of EC and OC) in micrograms of carbon per meter cubed Contact(s): Ruhi Humphries ruhi.humphries@csiro.au Melita Keywood melita.keywood@csiro.au References Chow, J. C., J. G. Watson, L. W. A. Chen, M. C. O. Chang, N. F. Robinson, D. Trimble and S. Kohl (2007). "The IMPROVE_A Temperature Protocol for Thermal/Optical Carbon Analysis: Maintaining Consistency with a Long-Term Database." Journal of the Air & Waste Management Association 57(9): 1014-1023, doi: 10.3155/1047-3289.57.9.1014 Karanasiou A, Diapouli E, Cavalli F, Eleftheriadis K, Viana M, Alastuey A, Querol X and Reche C (2011) On the quantification of atmospheric carbonate carbon by thermal/optical analysis protocols. Atmos. Meas. Tech. 4(11): 2409-2419, doi: 10.5194/amt-4-2409-2011.