Posted: 2023-02-21 18:33:31

To get a full picture of what the weather is doing requires a presence in faraway places.

Alongside a nationwide fleet of 69 radars, the Bureau of Meteorology's observation network includes 720 automatic weather stations, with some located on the earth's southernmost continent. 

At isolated Antarctic locations with dedicated automatic weather stations (AWS), the Bureau ensures long-term climate trends are captured and documented.

They also provide valuable forecasting tools for aviation and station operations, for which upper-air observation programs using balloons are also important. 

Each observation site in the sub-Antarctic and Antarctic regions has unique characteristics.

Mawson Station photo.
Mawson Station, photographed by Alana-Jayne Moore.(Supplied: Alana-Jayne Moore)

Mawson 

At Mawson, a research station south of the Antarctic Circle, the terrain shapes the cold, strong katabatic winds flowing off the Antarctic continent to the station on the coast.

Katabatic winds form as very cold, dense air from the elevated east Antarctic Ice Sheet flows downhill under the force of gravity.

They barrel through Mawson, which hosts a bureau office and observation equipment. 

Lights of the aurora australis in the night sky.
The aurora australis lightshow at Mawson, photographed by Patrick James.(Supplied: Patrick James)

Casey 

More than 2,000 km east of Mawson and almost 4,000 km due south of Perth, Casey Station sits on the edge of the Antarctic ice cap.

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