Brisbane CBD (Brisbane) 2011 hourly air...

Period of operation: 1 January to 31 December 2011

• Wind sensor failed 12 January 2011. Due to building refurbishment works it was not possible to access the roof to replace the faulty sensor until 9 September 2011.
• Temperature monitoring commenced on 3 February 2011

Region: South East Queensland
Site location: Latitude: -27.4774; Longitude: 153.0281
AS/NZS 3580.1.1:2007 site classification: Neighbourhood
AS/NZS 3580.1.1:2007 compliance (pollutants): Complies with the exception of the following:

• Equipment located in room on sixth floor of building
• Nephelometer inlet located on eastern side of building, 1 metre out from building
• PM10 inlet located on building roof above equipment room, 1 metre above roof surface
• Building lift shaft higher than PM10 inlet located 8 metres S of inlet

AS/NZS 3580.14—2011 compliance (meteorology): Complies with the exception of the following:

• Building lift shaft higher than wind sensor and within 10 metres of sensor
• Buildings higher than wind sensor located within 40 metres of sensor
• Temperature sensor located in non-aspirated radiation shield 1 metre above roof surface

Wind: Ultrasonic sensor

• Height above roof level: 4 metres
• The wind direction sensor is aligned to magnetic north. The reported wind direction is referenced to true north by application of a magnetic declination correction of +11 degrees to the sensor output value.

Temperature: Capacitive ceramic sensor
PM10: Tapered Element Oscillating Balance (TEOM) operated in accordance with AS 3580.9.8—2001

• Measurement values do not compensate for loss of semi-volatile components from the collected particulate matter
• Instrument output values are adjusted in accordance with US EPA equivalence designation method EQPM-1090-079 requirements (scaled by 1.03, offset by +3.0)
• After adjustment, negative hourly PM10 concentrations less than -0.5 µg/m3 are removed and concentrations between -0.5 µg/m3 and 0.0 µg/m3 are set to 0.0 µg/m3

Visibility-reducing particles: Nephelometer operated in accordance with AS/NZS 3580.12.1:2001

• Detector spectral response centred at 530 nm.
• Instrument output offset and/or scaled based on calibration and daily zero/span response data