Nella ricerca delle cause degli incendi che stanno mettendo in ginocchio l’Australia, il dito è puntato in primo luogo sugli effetti del riscaldamento globale e dell’attuale crisi climatica.
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Il negazionismo climatico del governo australiano
Che i governi dell’Australia abbraccino posizioni negazioniste sul fronte del cambiamento climatico non è una novità delle ultime ore. Già nell’agosto 2018, l’ormai ex Primo Ministro Malcolm Turnbull aveva compiuto un passo indietro rispetto all’Accordo di Parigi, decidendo di non rispettare gli impegni presi per ridurre le emissioni di gas serra.
Gli arresti per incendio doloso
Mentre le fiamme e le polemiche continuano a divampare, nel frattempo la polizia del Nuovo Galles del Sud ha riferito che le autorità australiane hanno accusato 183 persone di aver appiccato deliberatamente gli incendi boschivi degli ultimi mesi.
Des incendies majeurs
On ne peut nier la catastrophe que vit l’Australie depuis deux ans, puisque ces incendies majeurs ont débuté en 2018. Ils ne sont pas tous situés dans l’Est australien, mais également dans le Nord-Est, le Nord, et le Sud-Ouest, les plus importants se trouvant néanmoins en janvier 2020 dans la partie est des Nouvelles-Galles du Sud.
Chaleur, sécheresse et vent : le trio infernal
Si les températures élevées sont toujours pointées du doigt dans le déclenchement d’incendies majeurs, ce sont plutôt les conditions météorologiques qui vont engendrer une situation dite de sécheresse, favorable aux grands feux.
Trois autres facteurs méconnus
On ne peut pas passer sous silence l’origine même du déclenchement des incendies, à savoir la cause humaine : de nombreux incendiaires ont été interpellés, ce qui confirme que la foudre n’est pas la seule responsable.
What is the cause of the bushfires in Australia?
As Australia’s unprecedented bushfire season continues to unfold, competing arguments have been made about the principal causes of the human and environmental tragedy – particularly around the role of climate change. The prime minister, Scott Morrison, has acknowledged that climate change has had an influence on the fires ...
Why are the Queensland bushfires so hot?
A study of Queensland’s historic 2018 bushfire season found the extreme temperatures that coincided with the fires were four times more likely because of human-caused climate change. In advice issued in November 2019, Australia’s National Environmental Science Program was unambiguous.
Why is Australia needed to improve its climate modelling ability?
On Friday afternoon the president of the Australian Academy of Science, Prof John Shine, said Australia would need to further improve its climate modelling ability and understanding of fire behaviour to mitigate against the extreme events that would become more frequent and intense because of climate change.
How does the number of extreme positive dipole events go up?
A 2018 study in the journal Nature Communications found the number of extreme positive dipole events goes up as climate heating continues. At 1.5C of global warming, the frequency of extreme positive dipole events doubles compared with the pre-industrial period.
What causes bushfires to spread in multiple directions?
A weather front — where air masses at different densities meet — can cause the direction of the wind to change rapidly. Ultimately, that means bigger fires spreading in multiple directions. Bush fires can be so large and hot that they generate their own dangerous, unpredictable weather systems.
What aircraft did Australia send to help with the fires?
This week, as the fires caused widespread destruction, Australia deployed its military and called on its allies for help. The Australian Defense Force said on Tuesday that it would send Black Hawk and Chinook military helicopters, airplanes and naval ships to Victoria and New South Wales.
What happened to Binna Burra Lodge?
On Sept. 9, the Binna Burra Lodge, a historic getaway in the lush mountains of Queensland, was destroyed in a bush fire. The loss, and the blazes in the surrounding rain forests, alarmed scientists, who said that such fires were extremely rare in the usually cool and wet area.
Where is the heat wave in Australia?
The heat wave is continuing this week in southeastern Australia, with temperatures expected to reach 105 in Canberra, the capital. The extreme heat has followed the driest spring on record. Most of New South Wales and Queensland have been experiencing shortfalls in rain since early 2017.
Is Sydney a fire ban?
In Sydney, which issued a total fire ban , heavy smoke has discolored the sky on many days, and air quality there has at times been among the worst in the world. On Tuesday, social media was filled with photos of blazing red skies and people fleeing to beaches between Sydney and Melbourne. Image.
Will bushfires increase in Australia?
The devastating start to the fire season confirmed what scientists have been predicting: that Australia’s bush fires will become more frequent and more intense as climate change worsens. Few if any other developed countries are as vulnerable to changing climate as Australia, according to scientific reports.
Where have fires been in Australia?
Some of Australia's largest cities have also been affected, including Melbourne and Sydney -- where fires have damaged homes in the outer suburbs and thick plumes of smo ke have blanketed the urban center. Earlier in December, the smoke was so bad in Sydney ...
How many people have been charged with bushfires in NSW?
NSW police have charged at least 24 people with deliberately starting bushfires, and have taken legal action against 183 people for fire-related offenses since November, according to a police statement. Photos: In photos: Bushfires rage through Australia.
How many fires are burning in NSW?
Some start and are contained in a matter of days, but the biggest blazes have been burning for months. In NSW alone, more than 100 fires are still burning.
How many acres of land have been burned in Australia?
In total, more than 7.3 million hectares (17.9 million acres) have been burned across Australia's six states -- an area larger than the countries of Belgium and Denmark combined. The worst-affected state is NSW, with more than 4.9 million hectares (12.1 million acres) burned.
How many people have died in the fires in New South Wales?
At least 28 people have died nationwide, and in the state of New South Wales (NSW) alone, more than 3,000 homes have been destroyed or damaged. State and federal authorities are struggling to contain the massive blazes, even with firefighting assistance from other countries, including the United States.
Where did the bushfires rage?
Photos: In photos: Bushfires rage through Australia. Police disperse demonstrators during a climate protest near Australian Prime Minister Scott Morrison's official residence in Sydney, on December 19, during his absence on an overseas holiday, as bushfires burned across the region. Hide Caption. 61 of 105.
Who sent the letter to the Prime Minister of Australia?
Several high-ranking emergency service officials, including the former commissioner of the NSW Fire and Rescue Department, sent letters to Prime Minister Scott Morrison in 2019 warning of the impact of the climate crisis on Australia.
Combattre le feu par le feu... provoque le feu
De façon récurrente et régulière, les feux de brousse débutent entre janvier et mars. Cette saison, ils ont plusieurs mois d'avance. En cause, une atmosphère particulièrement sèche et des températures records, lesquelles sont aggravées par des vents violents.
Bientôt le retour de la pluie ?
Pat McNamara, président du fonds d'aide aux victimes des feux de forêt dans l'État de Victoria, a prévenu : « Nous ne sommes pas encore dans ce qui est, en temps normal, la haute saison des incendies. Nous en avons probablement donc pour encore quatre ou cinq semaines avec cette météo.
Des Incendies Majeurs
Chaleur, Sécheresse et Vent : Le Trio Infernal
Au-Delà d’un Certain Stade, Le Monstre Ne peut Plus être circonscrit
Les Mesures de Prévention ont-elles été Prises en Australie ?
L’Idéologie prend Le Dessus Sur La Raison
Le « réchauffement Climatique », Une Cause Plausible ?
- Ainsi que nous l’avons évoqué, cet incendie est sans équivoque pour les médias, les politiques, les artistes, lié au « réchauffement climatique » d’origine anthropique. Or, les causes d’évolution des climats sont multifactorielles. Dans le cas qui nous intéresse, des chercheurs ont montré l’importance de ce qu’ils nomment le IOD (Indian Ocean Dipol...
Trois Autres Facteurs méconnus