To return to what might be the essential point of this thread:
* of the two plague cities in Aus - namely
Sydney and Melbourne - why has one of them (MEL) 4.8 times more confirmed new cases of Covid-19 than the other (SYD)?
Recall that these two cities are home to a majority of Australia's people and the majority of Aus's economy (including the unreported grey economy and the 'illegal' black economy).
The conventional comparison of the two gives a few hints: significant differences in the rainfall (SYD receives roughly twice the rain of MEL) and the number of sunny/clear days (107 for SYD vs 46 for MEL - hence the moniker of 'Bleak City'), both more significant than the small differences in ethnic/demographic make-up of the people.
For the quick infographics see:
https://mccrindle.com.au/insights/bl...y-infographic/
Among the journalistic surveys of factors that might explain why the plague city of MEL is in more enduring trouble than the plague city of SYD is:
https://www.afr.com/policy/health-an...0211119-p59ach
In that story by Jill Margo, she argued that:
"Latitude, humidity and temperature could help to explain differences between Victoria and NSW in controlling the pandemic, according to expert modeller and epidemiologist, associate professor James Trauer of Monash University.
"While these differences may appear small, he says they help explain why Victoria needed to have at least 5 to 10 per cent more of its population vaccinated, compared to NSW, before it could bring the reproduction number below 1, and turn the pandemic around.
"While Melbourne sits at 37.8 degrees south,
Sydney is farther north at 33.8 degrees. Although these cities have very close average daily maximum temperatures, Melbourne’s average is made up of more extremes. It has very hot summer days but in
winter, Sydney’s average daily maximum is about three degrees warmer.
"With its subtropical climate, Sydney is more humid than Melbourne, which has a temperate oceanic climate."
Weatherspark.com provides the lazy person's way to compare the "climate" of the two cities, albeit limited to presenting temperature in degrees F. Rainfall and humidity (represented as 'muggy conditions') do look significant and especially in the warmer months of the year:
https://weatherspark.com/compare/y/1...tions-Humidity
That leads to questions begging for more analysis and
research.
* If humidity is crucial, why have some economies in the humid tropics (I think the standout is
Malaysia, which has reported quite a high death rate due to Covid-19) had more trouble than others?
* Has any respectable researcher looked at what happens if the humidity of air conditioned indoor spaces is increased?
* Do live-aboards in
marinas fare better than land-lubbers living on dirt?
* Do the so-called 'sea-gypsies' in SE
Asia fare better than urbanites?
* Are Indonesia's low case figures low because of poor counting or are the low case numbers real and represent the benefit of maritime SE
Asia (in contrast to continental SE Asia)?