29 May 2017, Independent, Great Barrier Reef can no longer be saved, Australian experts concede. The Great Barrier Reef – a canary in the coal mine for global warming – can no longer be saved in its present form partly because of the “extraordinary rapidity” of climate change, experts have conceded. Instead, action should be taken to maintain the World Heritage Site‘s ‘ecological function’ as its ecological health declines, they reportedly recommended. Like coral across the world, the reef has been severely damaged by the warming of the oceans with up to 95 per cent of areas surveyed in 2016 found to have been bleached. Bleaching is not always fatal but a study last year found the “largest die-off of corals ever recorded” with about 67 per cent of shallow water coral found dead in a survey of a 700km stretch. Now experts on a committee set up by the Australian government to improve the health of the reef have revealed that they believe the lesser target of maintaining its “ecological function” is more realistic. In a recent communique, the expert panel said they were “united in their concern about the seriousness of the impacts facing the Reef and concluded that coral bleaching since early 2016 has changed the Reef fundamentally”. “There is great concern about the future of the Reef, and the communities and businesses that depend on it, but hope still remains for maintaining ecological function over the coming decades,” it said. “Members agreed that, in our lifetime and on our watch, substantial areas of the Great Barrier Reef and the surrounding ecosystems are experiencing major long-term damage which may be irreversible unless action is taken now. Read More here
Tag Archives: oceans
27 May 2017, Climate News Network, Climate change is turning Antarctic green.Plant life is flourishing on the Antarctic Peninsula, indicating a dramatic increase in the rate of warming due to climate change. Antarctica is getting greener. British biologists have documented a four-fold or even five-fold increase in plant growth on the Antarctic Peninsula. They identify the sudden burgeoning of green things as an indicator that the continent is responding to climate change. In fact, only a tiny fraction of the south polar land mass is home to any plant life, but the first explorers observed mosses growing on the 600km of the peninsula.Antarctic climate In a climate in which temperatures rarely go much higher than freezing, mosses grow slowly – and hardly ever decompose. So any mossy bank becomes a reliable record of shifts in climate dating back thousands of years. Researchers from the University of Exeter in the UK, and colleagues from the University of Cambridge and the British Antarctic Survey, report in Current Biology that they tested five ice cores from three sites and found major biological changes had occurred over the past 50 years right across the Antarctic Peninsula. “Temperature increases over roughly the past half-century on the Antarctic Peninsula have had a dramatic effect on moss banks growing in the region” The Arctic has entered a phase of dramatic warming: researchers have documented the advance of green growth across the tundra and even the advance of exotic infections in the animal population. Warming in the southern continent has been much more sluggish, but, even in the frozen interior, melting has been observed. And where there is sunlight and liquid water and bare rock, there are the conditions for green growth. Read More here
17 May 2017, Yale Climate Connections, Sea-level rise, but no mention of ‘climate change’. A film maker documents sea-level rise risks facing Virginia’s Hampton Roads region, and avoids the baggage of the terms ‘climate change’ or ‘global warming.’ In Hampton Roads, a moniker for both a massive natural harbor in southeast Virginia and a metropolitan region comprising 17 small cities and municipalities, tidal flooding is as common as Chesapeake Bay blue crabs. Oh yes. Lest one forget, Hampton Roads is also home to the world’s largest Naval base. Low-lying roads flood so often that drivers use depth markers positioned on highway shoulders to gauge whether they’ll be able to pass through. Why is this happening? Sea level rise. And why are the seas rising? Well, let’s not talk about that. Shortsighted!, you might say. Or worse. But to film director Roger Sorkin, talking about sea-level rise – and more importantly, how to adapt to it and build more resilient, forward-thinking communities – without talking about climate change is a well-considered strategy. Avoiding buzz words that may turn people off For the record, Sorkin is no climate change contrarian. He acknowledges that carbon emissions are responsible for sea-level rise. And that we humans are responsible. But he also believes in meeting folks where they are. That’s why, he explains, his audiences do not hear the words “climate change,” “global warming,” or “carbon” in “Tidewater,” his documentary film about sea-level rise in Hampton Roads. “Stories matter to us,” Sorkin says. “And the building blocks are the words that you use to tell stories. Certain words press peoples’ buttons and produce visceral reactions.” Sorkin hopes to use “Tidewater” as a way of engaging conservative coastal communities and Republican lawmakers in swing states. His hope is that the film’s apolitical tack will appeal to viewers who tend to associate all things related to climate change with liberalism. “It’s really intended to nationalize the story of Hampton Roads as a real national security concern,” he says. Read More here
18 May 2017, New York Times Antarctic Dispatches: Miles of Ice Collapsing Into the Sea. The acceleration is making some scientists fear that Antarctica’s ice sheet may have entered the early stages of an unstoppable disintegration. Because the collapse of vulnerable parts of the ice sheet could raise the sea level dramatically, the continued existence of the world’s great coastal cities — Miami, New York, Shanghai and many more — is tied to Antarctica’s fate. Four New York Times journalists joined a Columbia University team in Antarctica late last year to fly across the world’s largest chunk of floating ice in an American military cargo plane loaded with the latest scientific gear. Inside the cargo hold, an engineer with a shock of white hair directed younger scientists as they threw switches. Gravity meters jumped to life. Radar pulses and laser beams fired toward the ice below. On computer screens inside the plane, in ghostly traces of data, the broad white surface of the Ross Ice Shelf began to yield the secrets hiding beneath. Read More here