Carbon dioxide May 1976 - April 2011
Methane May 1976- April 2011
Nitrous oxide May 1976 - April 2011
The Cape Grim Baseline Air Pollution Station monitors Southern Hemispheric air... The Cape Grim station is positioned just south of the isolated north-west tip (Woolnorth Point) of Tasmania. It is in an important site, as the air sampled arrives at Cape Grim after long trajectories over the Southern Ocean, under conditions described as ‘baseline’. This baseline air is representative of a large area of the Southern Hemisphere, unaffected by regional pollution sources (there are no nearby cities or industry that would contaminate the air quality)...Air samples are analysed at the station to determine concentrations of greenhouse and ozone-depleting gases, other air pollutants, including aerosols and reactive gases, and radon.
Also measured are weather and climate indicators like wind speed and direction, rainfall, temperature, humidity and solar radiation.
Since sampling began at Cape Grim, more that 3 billion measurements have been taken. Among these are measurements of greenhouse gases (GHGs), including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and synthetic GHGs such as hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulfur hexafluoride (SF6).
CSIRO interactive mapping here.
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