5 December 2016, Climate Home, Fire bombs: Hobart lies in the path of climate disaster. Around the world, communities are living obliviously close to climate-driven fire disaster. In the first in a series of reports, Karl Mathiesen visits Hobart, Tasmania. Looking down on the Tasmanian capital of Hobart from Knocklofty – one of its surrounding hills – David Bowman describes a truly frightening scenario. A hot, northerly gale and rolling fireball turn the forest around us into a blast furnace. The oil-filled eucalyptus canopies explode. One by one, the hills around the city catch alight. Then with a great sweep the fire runs up the slopes of Mount Wellington. Chunks of burning w1ood are flung into the air and rain down on the city. Office buildings, churches, schools and homes (perhaps the one I grew up in) randomly burn. In all, he says, four or five suburbs are destroyed. That’s the catastrophe, Bowman says, that the residents of Hobart live blithely beside every summer. And the odds are steadily getting worse. Both on land, and in the atmosphere, humans are creating bigger and bigger problems for ourselves. This Climate Home series will examine a dangerous trend in three distinct but related landscapes – Australia, western North America and the Mediterranean. In each of these places, climate change adds what Bowman, a professor in fire ecology from the University of Tasmania, calls “the plus”: a dialling up of danger as weather patterns shift towards a more fire prone future. Read more here
Category Archives: Impacts Observed & Projected
4 December 2016, University of Melbourne – Pursuit, A long climatic affair. The first extensive retrospective of our climate history has traced the human fingerprint on record-breaking hot temperatures as far back as the 1930s. In recent years climate scientists have been examining what role climate change has played in unusual extreme weather events such as Australia’s hottest summer in 2012-13 and recent heatwaves. But before now, no-one had looked at how far back in time we could go and still link weird weather and record-breaking climate extremes to our influence. Our study, published in Geophysical Research Letters, addresses the question of when exactly climate change started altering the influence of record hot years and summers in a way we can detect. We looked at five regions of the world, as well as the whole globe. Human-made climate change has been influencing heat extremes for decades, with many past records directly attributable to the effect we have had on the climate. We found the last 16 record-breaking hot years globally up to 2014 were made more likely because of climate change (we didn’t include 2015 – the current holder of the hottest year record – because we performed our analysis before the end of last year). Read More here
2 December 2016, Reuters, Biggest-Ever Coral Die-Off Reported on Australia’s Great Barrier Reef. Warm seas around Australia’s Great Barrier Reef have killed two-thirds of a 700-km (435 miles) stretch of coral in the past nine months, the worst die-off ever recorded on the World Heritage site, scientists who surveyed the reef said on Tuesday. Their finding of the die-off in the reef’s north is a major blow for tourism at reef which, according to a 2013 Deloitte Access Economics report, attracts about A$5.2 billion ($3.9 billion) in spending each year. “The coral is essentially cooked,” professor Andrew Baird, a researcher at James Cook University who was part of the reef surveys, told Reuters by telephone from Townsville in Australia’s tropical north. He said the die-off was “almost certainly” the largest ever recorded anywhere because of the size of the Barrier Reef, which at 348,000 sq km (134,400 sq miles) is the biggest coral reef in the world. Bleaching occurs when the water is too warm, forcing coral to expel living algae and causing it to calcify and turn white. Mildly bleached coral can recover if the temperature drops and the survey found this occurred in southern parts of the reef, where coral mortality was much lower. Read More here
29 November 2016, The Age, Farmers demand the Coalition government does more on climate change. A thumping majority of Australian farmers have concluded they are witnessing the effects of climate change, urging the Coalition government to reduce greenhouse gas emissions and prepare the country for a future that is drier, less predictable and more prone to bushfires. This is according to a survey of 1300 primary producers across states and agricultural sectors, conducted by advocacy group Farmers for Climate Action with the co-operation of the National Farmers Federation. It found 88 per cent of respondents want rural and regional politicians to start advocating for stronger climate change action. Two thirds have seen changes in rainfall over their time on the land and half have seen an increase in droughts and floods.Nine in 10 are concerned about damage to the climate and eight in 10 support Australia moving towards 100 per cent renewable energy. Read More here