How Earth's growing tropical zone may lead to more droughts and hotter heatwaves on Australia's east coast

This is simply a grab at publicity.  The tropics are defined by the limits of the sun being overhead so the tropics cannot change. The underlying finding is that there is drying on both sides of the tropics. But drying is an effect of cooling.  Warming would produce MORE rain, not less.  So the phenomenon does not indicate global warming.  It in fact contradicts it

A leading academic [An adjunct profesor is "leading"?] says the Earth's growing tropical zone may lead to more droughts and hotter heatwaves in Australia.

CQ University's Adjunct Professor of Environmental Geography Steve Turton said temperatures could reach more than 40C in Sydney and Melbourne during heatwaves and last for two weeks, The Daily Telegraph reported.  

With the area between the Tropics of Cancer and Capricorn currently 'bulging' and heading poleward, Adjunct Prof Turton said this will have an impact on the nation.

The planet's waistline has been growing since 1979 and it is likely to continue thanks to human activity, Adjunct Prof wrote in a piece for The Conversation.

'If the current rate continues, by 2100 the edge of the new dry subtropical zone would extend from roughly Sydney to Perth,' he said.

'As these dry subtropical zones shift, droughts will worsen and overall less rain will fall in most warm temperate regions.'

Adjunct Prof Turton said the geographical location of Australia placed the nation at high risk of an expanded tropical zone.

He added: 'Future climate change projections for Australia include increasing air and ocean temperatures, rising sea levels, more hot days (over 35C), declining rainfall in the southern continental areas, and more extreme fire weather events'.

Adjunct Prof Turton said biodiversity hotspots in Australia could also feel the effects of the tropical zone expansion as there were 'no suitable land areas (only oceans) for ecosystems and species to move into'.


No comments:

Post a Comment

All comments containing Chinese characters will not be published as I do not understand them