“The time between recurrent events is increasingly too short to allow a full recovery of mature coral assemblages, which generally takes from 10 to 15 years for the fastest growing species and far longer for the full complement of life histories and morphologies of older assemblages.”
In this post we find that the 2020 global average surface temperature was 1.25°C hotter than pre-industrial, equal first with 2016, according to The European Copernicus Climate Change Service. This is important for the Great Barrier Reef, because in a little known report in 2013 scientists found that 1.2°C is the warmest compatible with the Reef remaining a coral-dominated system. Focus recently has been on the emergence of annual severe bleaching (ASB) when the affected reefs are effectively dead. Climate change action of the type we are engaged in will only delay the emergence of ASB on average from about 2034 to 2045.Continue reading Temperature pushes Great Barrier Reef to tipping point→
1. Trump’s trade deal will make us collateral damage
Kevin Rudd’s AFR article Trade deal will not stop US and China drifting apart gives us the lowdown. From the URL his heading was probably Trade war truce a symbol of the US unhinged. Seems Trump banged on for an hour about incoherent nonsense at the announcement while the head Chinese trade negotiator stood patiently by.
Rudd says intellectual property theft will be criminalised in China for the first time. Good in principle, but you will need to make your case in Chinese courts. Continue reading Weekly salon 20/1→
The brown skies I observed in the Blue Mountains this week are a product of human-caused climate change. Take record heat, combine it with unprecedented drought in already dry regions and you get unprecedented bushfires like the ones engulfing the Blue Mountains and spreading across the continent. It’s not complicated.
2019 will always be known for the fires. So how different was the climate?
2019 was Australia’s driest year on record with nationally-averaged rainfall 40% below average for the year at 277.6 mm.
2019 was Australia’s warmest year on record. Australia’s area-averaged mean temperature for 2019 was 1.52 °C above the 1961–1990 average, well above the old record: +1.33 °C in 2013. Mean maximum temperatures were the warmest on record at 2.09 °C above average, also well above the previous record, which was +1.59 °C in 2013.
Please note the temperature is referenced against the 1960-1990 average, not pre-industrial.
At 277.6 mm, 2019 rainfall was well below the previous record from 1902 which was 314.5 mm.
The main influence was a very strong positive Indian Ocean Dipole (IOD), one of the strongest on record. The El Niño–Southern Oscillation remained neutral throughout 2019, so I guess things could have been worse.
All this gave us severe fire weather throughout the year; the national annual accumulated Forest Fire Danger Index was the highest since 1950, when national records began.
For images to illustrate, I’ll begin with a temperature trend for the summer months worked out by Tamino:
Looking at the graph, add about 0.5°C to get the anomaly to pre-industrial. This year looks so much an outlier that one would think it unlikely to be repeated for a few years. However, it has shown us what the future may hold.
Here are the maximum temperature deciles:
More than half the continent was the hottest on record, with average and below average bits hard to find.
Under climate change, the conditions for catastrophic fires will likely be much more frequent — along with the conditions for drought, flooding and storms.
So a nation-building effort to minimise risk would seem prudent.
Morrison is hiding behind the notion that solving climate change requires effort from all nations. His rhetoric is that Labor’s policy would be “economy wrecking”. Yet leading climate scientists, such as Johan Rockström from the Potsdam Institute say:
“Earth observations show that big systems with known tipping points are already now, at 1°C warming, on the move toward potentially irreversible change, such as accelerated melting of Greenland and West Antarctic ice sheets, drying of rainforests, and thawing of Arctic permafrost”
Countries are being asked to come to the 2020 meeting of the UNFCCC Conference of Parties with increased ambition. As preparation the Climate Change Authority published a consultation paper in July, and having heard what came out of the Madrid Conference in December will shortly finalise their advice.
PM Scott Morrison could take that opportunity to show some leadership. Also he has spoken of the possibility of a royal commission on the bushfires. That could be an opportunity to pivot. However, George Megalogenis in Morrison, the political animal who missed the political opportunity to leadthinks Morrison has fluffed it, and simply does not know how to behave faced with an international pile-on.
this isn’t about people, it’s about ideology, and to accept the unprecedented scale of the fires and act accordingly is to accept that the climate is changing and something needs to be done. That’s it. To me, this is the most striking aspect of the crisis — the debate about how best to douse a burning country has been seamlessly press-ganged into service in the ongoing culture war, all of which is amplified and buttressed by an increasingly demented right-wing media and an absurdly powerful fossil fuels lobby.
No one is being told to calm down anymore. The smug reassurances have given way to blind panic as it comes apparent that not even the friendly media can shield the government from the rising ire of the public. But even as the army is called in to assist in the relief effort, even as Morrison agrees to pay volunteer firefighters, even as a two billion dollar recovery fund is pledged, the government refuses to alter its climate change policy.
Australia has had a history of bushfires stretching back long before the English invasion. There seems to be little doubt that the fire related activities of Aborigines have had a substantial effect on local ecologies and the species that have survived and gone extinct.
Don Watson’s article in The Monthly poses a powerful message to all of us seeking the radical changes needed to give the world a future. The target was Labor supporters but the message is equally important to the Greens and other progressive parties. In a sense the article supplements Greta Thunberg’s speech to the UN with its memorable bottom line of: “We are in the beginning of mass extinction, and all you can talk about is money and fairy tales of eternal economic growth,” (Given that the human plague has grown by over 22% (1.5 billion) since she was born and 3 times since 1950 perhaps she should have added eternal population growth to the fairy tales that require urgent action.)
The future desperately needs leadership that can inspire us to support the action required to minimize the damage being done by the human plague in a way that doesn’t make the people at the bottom of the pile even worse off than they are now.
Don Watson’s article was about the importance of speech writers like Labor’s Graham Freudenberg who have a clear vision on policy and ideas combined with the skills to turn these things into memorable, stirring speeches like Gough’s “It’s Time” speech.
PFAS has notoriously been used by the defence institutions in firefighting foam across the country. The chemicals have leaked into the surrounding environment. Now Shine lawyers are about to file a class action on behalf of up to 40,000 people who live and work on land contaminated by PFAS, suing the Australian Government, arguing their property values have plummeted.
The focus is on eight defence bases in particular, but there are plenty of hotspots around, as this map shows:
When I was young, we wore clothes until the wore out. I had an elder brother, and got to wear hand-me-downs.
This all changed, possibly in the 1970s and 1980s. Now we have the phenomenon of single-use clothing, ironically often T-shirts worn by people crusading to save the planet. Richard di Natale is, I think, the Australian politician most often seen in T-shirts. During the last election he often looked like this: