Areas in western Sydney already experience severe heatwaves, & they're getting worse due to climate change, increasing urbanisation & high density living. In the summer of 2019 temperatures hit 50°C! Imagine the consequence of replacing thousands of hectares of farmland & forests with a 24/7 airport!
The western Sydney airport will be over 1,000 hectares of concrete & asphalt, with a runway 3km long. Then there's the planes. Jet exhaust can reach temperatures of over 900°C, & anyone who's ever caught a plane knows that they spend a lot of time on the ground with their engines going! Add the fumes from hundreds of trucks & thousands of cars & you have a purpose built heatwave machine.
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