This is the metadata for: MUMBA_NOx_UOW_2012-11-21_2013-02-15 (doi:10.1594/PANGAEA.871995)

Measurement: NO and NO2
Instrument: Thermo TEI42i chemiluminescence instrument 
Owner: University of Wollongong
Campaign: MUMBA
Location: Main measurement site - Nissan Hut Kids Campus / Campus East, Wollongong (-34.3972, 150.8996)
Dates of operation: 21-Dec-2012 to 15-Feb-2013
Original measurement time resolution: 1 minute
Averaging time: 1 hour
Units: ppb

Inlet/Installation detail (inc. flow rate if relevant): Ambient air sampled with 3/8" PTFE bypass flow, 1/4" PTFE inlet, not heated, inline Teflon filter, max. residence time 3 seconds, shared with O3 and SIFT systems which take their samples downstream of NOx instrument; from 31/01/2013 CSIRO NOx box connected upstream
Data/sample collection detail: Molybdenum converter; NO2 measurements are influenced by interferences caused by nitrates with an unkown conversion efficiency 
Data/sample analysis detail (inc. references if needed): NO2 mixing ratios calculated as the difference between NOx and NO mixing ratios (NO2 = NOx - NO)
Calibration: NO only - February 2013
Precision (60 seconds): NO 0.027 ppb, NO2 0.045 ppb, adapted from NO 
Accuracy: NO +- 1% 

Issues: none reported 
Corrections: a correction for the inlet line reaction (NO + O3-> NO2 + O2) was applied to the original 60 second data, assuming the entire sampling line was dark (median: 0.007 ppb, mean: 0.015 ppb) - mean hourly values are reported 
Uncertainty: uncertainty due to the difference in calibrations prior and post to MUMBA campaign for NO: +-13%, timeshift +-20s
Detection Limit (2-sigma, 60 seconds): NO 51 pptv, NO2 91 pptv, NOx 91 pptv 
Data below detection limit reported as: included
Missing data reported as: NA

File headers:
date 			yyyy-mm-ddTHH:MM:SSz
NO (ppb)		mean hourly NO in mixing ratio by volume
precision NO (ppb)	mean hourly precision for NO in mixing ratio by volume
NO2 (ppb)		mean hourly NO2 in mixing ratio by volume
precision NO2 (ppb)	mean hourly precision for NO2 in mixing ratio by volume
inline reaction (ppb)	mean hourly correction applied for inlet line reaction (NO + O3-> NO2 + O2) in mixing ratio by volume



data version: 18-Sep-2014

Contact(s):
Dagmar Kubistin	dagmar.kubistin@dwd.de