The CSIRO archive of observed atmospheric CO2 concentrations at the Maquarie Island Research Station, measured with the CSIRO developed LOFLO Mk2 instrument. LOFLO is an analysis system built around a commercial LI-COR 6251 optical bench which utilizes NDIR (non-dispersive infrared) gas analysis technology to measure CO2 concentrations in sample air. Consuming smaller volumes of calibration gases (approx. 15ml/min) and requiring much less operator intervention, LOFLO measurements have significantly less bias than traditional NDIR measurement techniques. Measurements using LOFLO first began at Cape Grim in May 2000 and has since been expanded to other global stations with the newer improved LOFLO Mk2. Stations using LOFLO include Cape Grim, Maquarie Island, Otways Basin and Aspendale. CO2 measurements are available from the Maquarie Island Research Station for the period 1/1/05 until present, with logged data available as yearly ascii text files in hourly averaged and minutely averaged periods for CO2 concentration, standard deviation, max & min values as well as a baseline flag. Typically file size is approximately 500 KB and 12 MB for an hourly averaged and minutely averaged year of data respectively.

The CSIRO archive of observed atmospheric CO2 concentrations at the Cape Grim Baseline Air Pollution Station in North-West Tasmania, measured with the CSIRO developed LOFLO & LOFLO Mk2 instruments. LOFLO is an analysis system built around a commercial LI-COR 6251 optical bench which utilizes NDIR (non-dispersive infrared) gas analysis technology to measure CO2 concentrations in sample air. Consuming smaller volumes of calibration gases (approx. 15ml/min) and requiring much less operator intervention, LOFLO measurements have significantly less bias than traditional NDIR measurement techniques. Measurements using LOFLO began at Cape Grim in May 2000 and has now been expanded to other global stations with the newer improved LOFLO Mk2. Stations using LOFLO include Cape Grim, Maquarie Island, Otways Basin and Aspendale, with logged data available as yearly ascii text files in hourly averaged and minutely averaged periods for CO2 concentration, standard deviation, max & min values as well as a baseline flag. Conditions are considered baseline when wind directions are between 190 & 280°. Typically file size is approximately 500 KB and 12 MB for an hourly averaged and minutely averaged year of data respectively.

The CSIRO archive of observed atmospheric CO2 concentrations at the Cape Grim Baseline Air Pollution Station in North-West Tasmania for the period 1976 until 2004. Measurements of atmospheric CO2 levels began in 1976 and have continued until the present day, giving an unprecedented view of the overall change in CO2 composition over the 30+ year time-frame. These started with the URAS-2T instrument until Jun 1990, continuing with the Siemens Ultramat 5E system until July 2004, followed by the LOFLO Mk2 instrument until the present day. All use NDIR (non-dispersive infrared) analysis techniques with LOFLO being CSIRO developed to make measurements consuming smaller volumes of calibration gas, requiring less operator intervention and having less bias than traditional NDIR measurement techniques. Logged data is available in a single ascii text file in hourly averaged periods containing CO2 concentration, wind speed and direction, a baseline and quality flag. Conditions are considered baseline when wind directions are between 190 & 280° bringing air from the southern ocean. The file size for the given variables is approximately 400 KB for an hourly averaged year of data, with the period from 1976-2004 being approx 11.0 MB.

The CSIRO archive of observed atmospheric CO2 concentrations at the Aspendale CSIRO Marine and Atmospheric Research division measured with the CSIRO developed LOFLO Mk2 instrument. LOFLO is an analysis system built around a commercial LI-COR 6251 optical bench which utilizes NDIR (non-dispersive infrared) gas analysis technology to measure CO2 concentrations in sample air. Consuming smaller volumes of calibration gases (approx. 15ml/min) and requiring much less operator intervention, LOFLO measurements have significantly less bias than traditional NDIR measurement techniques. Measurements using LOFLO first began at Cape Grim in May 2000 and has since been expanded to other global stations with the newer improved LOFLO Mk2. Stations using LOFLO include Cape Grim, Maquarie Island, Otways Basin and Aspendale. CO2 measurements are available from the Aspendale Air Pollution Station for the period 24/4/08 until present, with logged data available as yearly ascii text files in hourly averaged and minutely averaged periods for CO2 concentration, standard deviation, max & min values as well as a baseline flag. Typically file size is approximately 500 KB and 12 MB for an hourly averaged and minutely averaged year of data respectively.

The CSIRO archive of observed atmospheric CO2 concentrations at the Otway Basin Naylor Field (30km WNW of Peterborough) carbon-dioxide geo-sequestration site, measured with the CSIRO developed LOFLO Mk2 instrument. This study (the first of its kind in Australia) by the Cooperative Research Center for Greenhouse Gas Technologies (CO2CRC) is to monitor the trial geo-sequestration of CO2 into the depleted gas field (Naylor Field) and to observe the environmental effects to determine the viability and effectiveness of CO2 geo-sequestration. LOFLO is an analysis system built around a commercial LI-COR 6251 optical bench which utilizes NDIR (non-dispersive infrared) gas analysis technology to measure CO2 concentrations in sample air. Consuming smaller volumes of calibration gases (approx. 15ml/min) and requiring much less operator intervention, LOFLO measurements have significantly less bias than traditional NDIR measurement techniques.Measurements using LOFLO first began at Cape Grim in May 2000 and has since been expanded to other global stations with the newer improved LOFLO Mk2. Stations using LOFLO include Cape Grim, Maquarie Island, Otways Basin and Aspendale. CO2 measurements are available from the Otways Basin geosequestration site for the period 12/1/07 until present, with logged data available as yearly ascii text files in hourly averaged and minutely averaged periods for CO2 concentration, standard deviation, max & min values as well as a baseline flag. Typically file size is approximately 500 KB and 12 MB for an hourly averaged and minutely averaged year of data respectively.