Tag: wildfires

Australia’s burning – again

NSWfiresNASAEO2013294

Smoke from the bush fires burning in the Blue Mountains blows over Sydney in this NASA Earth Observatory image captured yesterday. The scale of the fires and their impact on the skies over Sydney and much of New South Wales is prompting much discussion in Australia about the link between weather, climate warming and wildfires, and bringing international pressure to bear on new PM Tony Abbott’s plans to scrap carbon pricing. Here’s researcher Roger Jones, writing in The Conversation:

We found that fire danger in Victoria increased by over a third after 1996, compared to 1972-1996. The current level of fire danger is equivalent to the worst case projected for 2050, from an earlier analysis for the Climate Institute.

While it’s impossible to say categorically that the situation is the same in NSW, we know that these changes are generally applicable across south-east Australia. So it’s likely to be a similar case: fire and climate change are linked.

This early start to the fire season comes after a year of record warmth in Australia — the hottest summer on record, the hottest 12 month period (to September), and it’s looking odds on that calendar 2013 will be the warmest on record. NSW also had its second warmest winter on record, which helped to dry soils out more than usual. With summer still a month away, the prospect for SE Australia’s fire-prone states looks grim.

For historical background on Aussie bush fires, see this overview from Weather Underground expert Chris Burt, and keep up to date with excellent analysis at The Conversation by following the NSW bushfires 2013 tag.

[Update: For pithy comment, do not miss today’s First Dog On The Moon1. ]

  1. Do something about climate change you disingenuous muppet! [↩]

Canadian megafires send smoke round the globe

Quebecfires

Massive forest fires are raging beyond control in Quebec, sending huge plumes of smoke to the east. The Eastmain fire — top left in this image from NASA’s Earth Observatory — is spreading towards the east coast of James Bay, the southernmost extension of Hudson Bay, and is currently estimated to cover an area of 656,000 hectares (1.6 million acres). Smoke from the huge fires has already caused smog problems in Montreal and Maine, and is heading round the globe. On July 8 NASA’s Terra satellite spotted a great swathe of Canadian smoke crossing Norway and Sweden, and heading across the Baltic towards Finland.

QsmokeoverNorway

The Eastmain fire is the largest wildfire in Canada since 1959, and is almost as big as all the wildfires that have burned in the US so far this year. Forecasts for the area show warm temperatures continuing for at least another 5 days, so the fire is likely to continue to spread.

Meanwhile, up on the Greenland ice sheet, Jason Box, Peter Sinclair and the Dark Snow team, who are investigating the effect of smoke particles deposited on the ice on melting, have successfully completed their first sampling mission. It’s well worth checking Sinclair’s blog for frequent updates — and lovely images — of the team’s progress.

[Update 14/7: Jeff Masters posts on the Canadian fires here, and a European team track the smoke in near real time.]

Planet waves, and the big heat

It’s certainly hot in the southwestern USA at the moment — a dome of heat has established itself under a persistent high pressure ridge, and temperatures are pushing up towards all-time highs. Wildfires are running out of control. One caused the tragic death of 19 firefighters at Yarnell Hill in Arizona yesterday. One more extreme weather event to add to this year’s growing list, and as with most of the others, there’s a clear sign of a link with rapid climate change. That heat dome is being held in place by a large, slow-moving northward loop in the jetstream — and that jetstream pattern is beginning to look very much like the characteristic fingerprint of rapid warming in the northern hemisphere, as Jennifer Francis explains in this video, recorded at a Climate Desk event in Washington last month. It’s just about the clearest explanation of what’s going on that I’ve encountered — particularly in her description of why the jetstream exists in the first place, and why warming is changing the way it behaves. If you want to understand what’s going on, you have to watch this.

There’s a full recording of the Climate Desk event here, including a talk by Weather Channel meteorologist Stu Ostro. Ostro used to be a confirmed sceptic, but began to see changes in weather patterns that he traced back to the effects of warming — specifically, an increase in the “thickness” of the atmosphere, the very thing that’s driving the changes in jetstream behaviour.

The Climate Show #32: a Cook’s tour of the Aussie heat

At long last: John Cook from Skeptical Science rejoins the Climate Show team for the first show of 2013. He hooks up with Glenn and Gareth to review Australia’s big heatwave, and stays around to dig into the new Greenpeace report on dirty energy, discuss Obama’s inauguration speech and Boris Johnson’s climate blunder, the latest scary news on sea level rise and the implications for the future. Plus much much more…

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Climate of complacency #2: de Freitas lies to TV3

Imagine my shock when I discovered today that Chris de Freitas — the Auckland University academic who hit the news a couple of years ago when it was found that he was teaching climate denial to first year students, but who has a 20 year history of advocating for inaction on climate change — had made headlines by telling lies to a TV news operation. The headline: Kiwi scientist: Climate change not to blame for heatwaves. For a while it was top story on the TV3 News web site. Here’s how the story opens:

A New Zealand scientist has denied popular claims the recent Australian heatwave and other extreme weather events around the world are linked to global warming.

Here’s where de Freitas plays fast and loose with the facts:

The Australian government’s Climate Commission released a report last week stating: “climate change has contributed to making the current extreme heat conditions and bushfires worse”.

But associate professor of climate and environment science Chris de Freitas, from the University of Auckland, says this is not the case.

“There is no evidence to suggest that,” he says. “It’s really [just] hype.”

There’s the lie. De Freitas states without qualification that there’s “no evidence”. And yet the Australian Climate Commission’s report on the subject, prepared by three scientists with a great deal more experience and scientific mana than junior geographer de Freitas, states:

Climate change has contributed to making the current extreme heat conditions and bushfires worse.

The report provides a long list of peer-reviewed scientific studies to support its conclusions. But de Freitas keeps on digging a hole for himself:

Dr Freitas says the earth actually hasn’t warmed for at least a decade, and scientists do not know enough about climate change to tell if carbon dioxide emissions could cause large or damaging changes.

“There’s no evidence to suggest that what we’re doing is creating dangerous change.”

Tell it to the firefighters, Chris. Tell it to the people of Dunalley. Tell it to the Australian people suffering as climate change comes home to roost.

There are several questions that have to be asked about this “news” item. Why did TV3 go to de Freitas for a story in the first place? Was de Freitas touting his contrarian lies to the media, or were his friends at the NZ Climate “Science” Coalition, where he rejoices in the role of “science adviser”, pushing his views to news operations running short-staffed during the summer break?

Auckland University, which allows de Freitas to teach rubbish to its students under the guise of academic freedom, has to ask itself if it can really stand behind an employee who so egregiously lies in public. Academic freedom should be cherished, but allowing de Freitas’s nonsense to go unchallenged devalues the very notion, and diminishes the university’s hard won reputation as a centre of academic excellence.