They can't spell ASS.

"Global heating of 3C would more than double the number of annual heatwaves in some parts of Australia, leave properties uninsurable due to flood and fire risk, and make many of the country’s ecosystems “unrecognisable”, according to Australia’s leading scientists.

The Australian Academy of Science is calling on the Morrison government to accelerate the country’s transition to net zero greenhouse gas emissions in a report that examines what Australia could look like in a 3C world.

The analysis paints a grim picture in which heatwaves in states such as Queensland would occur seven times a year and last for 16 days at a time, and unprecedented fire seasons such as the 2019-20 fire disaster become a regular occurrence."

https://www.theguardian.com/environment/2021/mar/31/delay-is-as-dangerous-as-den...

From the underlying paper -

"Figure 5. Historic and projected average global surface temperatures for Australia under three pathways ranging from RCP2.6 (~1.5°C) to RCP8.5 (~3–5°C) climate change scenarios"

So they are using the worst scenario. One where the world never runs out of fossil fuel.

And of course BoM uses the revised and somehow improved ACORN-2 "Data", where stations up to hundreds of Km away are reflective of what they have ascertained as being the past temperatures. The ones they took over in 1910 because the data before then wasn't believable because some station didn't have Stephenson Screens. Now the data from Stephenson Screens isn't to be trusted. Over 200 temperature changes due to "statistical" reasons.

"cyclones in the australian region have increased in intensity but decreased in frequency over the past 30 years. slow-moving and larger cyclones are projected in the future, leading to more extreme rainfall events and flooding. the height of storm surges and resulting coastal damage will continue to be exacerbated by sea level rise (BoM 2018; oppenheimer et al. 2019)."

From BoM 2018 cyclone intensity -

http://www.bom.gov.au/cyclone/tropical-cyclone-knowledge-centre/history/climatol...

So back to 1988. Oh dear start at a low and work forward. Can anybody say "cherry-pick"?

"Globally, the world is seeing a doubling of economic and insured losses from strengthening tropical cyclones every 15 years (Bruyère et al. 2019). however, not all of the increase in cyclone damage for australia is due to climate change (chand et al. 2019; Patricola and wehner 2018)."

Bruyere et al - " Trends in global losses indicate an approximate doubling of inflation-adjusted economic and insured losses every 15 years (Munich Re, 2018)."

A much more realistic view would be using GDP rather than inflation rate.