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Cape Grim Baseline Air Pollution Station

Rooftop solar instruments at Cape Grim - Image: CSIRO Atmospheric Research - Bureau of MeteorologyCape Grim Baseline Air Pollution Station is located at the far north-west tip of Circular Head. It is one of just 25 Baseline Air Pollution Stations worldwide (see Map below), and the only one of its kind in Australia.

Cape Grim Baseline Air Pollution Station (CGBAPS) was established by the Australian Government to monitor and study global atmospheric composition. The facility began taking atmospheric samples in April 1976 and since that time more than three billion measurements have been made.

CGBAPS measures concentrations of natural and anthropogenic particles, including greenhouse gasses such as methane, nitrous oxide and carbon dioxide, along with chemicals which deplete the ozone layer.

Sophisticated measurements of solar radiation, including harmful UV-B radiation, are also made.

CGBAPS also measures general meteorological parameters including wind speed and direction, rainfall, temperature, humidity and air pressure.

CGBAPS is a joint responsibility of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Bureau of Meteorology. It was one of the first five Global Atmosphere Watch stations established worldwide, the other four being the South Pole, American Samoa, Mauna Loa (Hawaii) and Point Barrow (Alaska).

CGBAPS is not open to the public.

For further information about the work carried out at Cape Grim, visit:

To view the World Meteorological Organisation's map of Global Atmosphere Watch Stations, click here.

To view the Swiss-based Global Atmosphere Watch Station Information System, which shows all global, regional and contributing atmospheric and meteorological stations worldwide, go to:*/---/l=1