<
https://theconversation.com/it-never-rains-but-it-pours-intense-rain-and-flash-floods-have-increased-inland-in-eastern-australia-227777>
"Before climate change really got going, eastern Australia’s flash floods
tended to concentrate on our coastal regions, east of the Great Dividing Range.
But that’s changing. Now we get flash floods much further inland, such as
Broken Hill in 2012 and 2022 and Cobar, Bourke and Nyngan in 2022. Flash floods
are those beginning between one and six hours after rainfall, while riverine
floods take longer to build.
Why? Global warming is amplifying the climate drivers affecting where flash
floods occur and how often. All around the world, we’re seeing intense dumps of
rain in a short period, triggering flooding – just as we saw in Dubai this
week.
Our research shows east coast lows – intense low pressure systems carrying huge
volumes of water – are developing further out to sea, both southward and
eastward.
This means these systems, which usually bring most of the east coast’s rain
during cooler months, are now dumping more rain out at sea. Instead, we’re
seeing warm, moist air pushed down from the Coral Sea, leading to thunderstorms
and floods much further inland.
This month, a coastal trough along the Queensland and New South Wales coasts
and an inland trough resulted in unusually widespread flooding, triggering
flooding in Sydney as well as inland."
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
