28 April 2017, Climate News Network, Sea floor erosion causes coral reefs to sink. Five US coral reefs are sinking beneath the waves due to the erosion of the sea floor, robbing coastal communities of their natural storm barrier. The world’s coral reefs are not just in hot water and under threat from acid attack; they may even be getting out of their depth. New research around five US coral reefs shows that even as sea levels rise, the sea floor around the reefs is being eroded. And coral growth simply may not be fast enough to keep up, which means that coastal communities in Florida, the Caribbean and Hawaii could become increasingly at risk from storms, waves and erosion. The news comes close after revelations that great tracts of Australia’s Great Barrier Reef, like other coral colonies, have been devastated by bleaching, as ocean temperatures rise above the levels that corals – animals that live in symbiosis with algae – can tolerate, and researchers have warned that this could soon be happening to reefs almost everywhere, every year. Coral under threat There is already widespread alarm among marine scientists as the seas become measurably more acidic due to an increase in levels of carbon dioxide in the atmosphere, and this too poses a threat to corals everywhere. But while researchers in the tropics had monitored the living reefs of the surface waters, hardly anybody had paid attention to the sea floor around the reefs. Now, scientists of the US Geological Survey report in Biogeosciences that – possibly as a consequence of the degradation of the reefs of the Florida Keys, the US Virgin Islands and the Hawaiian island of Maui – the sea floor is being scoured of sand and sediments, just as sea levels continue to creep to a predicted rise of up to a metre by 2100. Read More here
Monthly Archives: April 2017
20 April 2017, Bloomberg Climate Changed, The Nightmare Scenario for Florida’s Coastal Homeowners. Demand and financing could collapse before the sea consumes a single house. On a predictably gorgeous South Florida afternoon, Coral Gables Mayor Jim Cason sat in his office overlooking the white-linen restaurants of this affluent seaside community and wondered when climate change would bring it all to an end. He figured it would involve a boat. When Cason first started worrying about sea-level rise, he asked his staff to count not just how much coastline the city had (47 miles) or value of the property along that coast ($3.5 billion). He also told them to find out how many boats dock inland from the bridges that span the city’s canals (302). What matters, he guessed, will be the first time a mast fails to clear the bottom of one of those bridges because the water level had risen too far. “These boats are going to be the canary in the mine,” said Cason, who became mayor in 2011 after retiring from the U.S. foreign service. “When the boats can’t go out, the property values go down.” Jim Cason, mayor of Coral Gables, in his office. He worries that rising insurance costs, reluctant lenders or skittish foreign buyers could hurt home prices well before sea-level rise gets worse. If property values start to fall, Cason said, banks could stop writing 30-year mortgages for coastal homes, shrinking the pool of able buyers and sending prices lower still. Those properties make up a quarter of the city’s tax base; if that revenue fell, the city would struggle to provide the services that make it such a desirable place to live, causing more sales and another drop in revenue. And all of that could happen before the rising sea consumes a single home. As President Donald Trump proposes dismantling federal programs aimed at cutting greenhouse gas emissions, officials and residents in South Florida are grappling with the risk that climate change could drag down housing markets. Relative sea levels in South Florida are roughly four inches higher now than in 1992. The National Oceanic and Atmospheric Administration predicts sea levels will rise as much as three feet in Miami by 2060. By the end of the century, according to projections by Zillow, some 934,000 existing Florida properties, worth more than $400 billion, are at risk of being submerged. Read More here
19 April 2017, Climate Council Report: Pollution and Price: The Cost of Investing in Gas. Investing in more gas will lock in high electricity prices and pollution for decades to come. Our new report, ‘Pollution and Price: The cost of investing in gas,’ shows that tackling climate change and protecting Australians from worsening extreme weather requires our electricity system to produce zero emissions before 2050. Gas is not sufficiently less polluting than coal to garner any climate benefit. Furthermore, greater reliance on gas will drive higher power prices. While renewable energy can provide a secure, affordable alternative to new fossil fuels. Access Report here
17 April 2017, The Guardian Stop swooning over Justin Trudeau. The man is a disaster for the planet. Donald Trump is so spectacularly horrible that it’s hard to look away – especially now that he’s discovered bombs. But precisely because everyone’s staring gape-mouthed in his direction, other world leaders are able to get away with almost anything. Don’t believe me? Look one country north, at Justin Trudeau. Look all you want, in fact – he sure is cute, the planet’s only sovereign leader who appears to have recently quit a boy band. And he’s mastered so beautifully the politics of inclusion: compassionate to immigrants, insistent on including women at every level of government. Give him great credit where it’s deserved: in lots of ways he’s the anti-Trump, and it’s no wonder Canadians swooned when he took over. But when it comes to the defining issue of our day, climate change, he’s a brother to the old orange guy in Washington. Not rhetorically: Trudeau says all the right things, over and over. He’s got no Scott Pruitts in his cabinet: everyone who works for him says the right things. Indeed, they specialize in getting others to say them too – it was Canadian diplomats, and the country’s environment minister, Catherine McKenna, who pushed at the Paris climate talks for a tougher-than-expected goal: holding the planet’s rise in temperature to 1.5C (2.7F). But those words are meaningless if you keep digging up more carbon and selling it to people to burn, and that’s exactly what Trudeau is doing. He’s hard at work pushing for new pipelines through Canada and the US to carry yet more oil out of Alberta’s tar sands, which is one of the greatest climate disasters on the planet. Read More here