24 March 2017, Climate News Network, World’s reefs damaged beyond repair. Australia’s Great Barrier Reef and reefs in the Maldives have been dangerously weakened by coral bleaching caused by global warming and El Niño events. The Great Barrier Reef, one of the wonders of the Pacific Ocean, may never fully recover from the combined effects of global warming and an El Niño year, according to a new study in one of the world’s leading science journals. And a second study, in a second journal, warns that increased sea surface temperatures have also caused both a major die-off of corals and the collapse of reef growth rates in the Maldives, in the Indian Ocean. Corals are very sensitive to ocean temperatures, and in unusually hot years – and these have recurred naturally and cyclically since long before humans started burning coal, oil and gas, to accelerate the build-up of greenhouse gases in the atmosphere – the corals react to stress by bleaching. That is, they eject the photosynthesising algae that live with them in symbiosis, to the advantage of both creatures. Hotter oceans But the world’s oceans are becoming hotter anyway, because of global warming driven by greenhouse gas concentrations in the atmosphere. The seas are becoming ever more acidic as atmospheric carbon dioxide reacts with the water. And the periodic return of a blister of oceanic heat in the eastern Pacific called El Niño – Spanish for “The Child”, because it becomes most visible around Christmastime – has begun to put the world’s reefs at risk. The El Niño of 2015-16 triggered a massive episode of bleaching throughout the tropics. And, Australian researchers say in Nature, the bleaching continues. “We’re hoping that the next two to three weeks will cool off quickly, and this year’s bleaching won’t be anything like last year. The severity of the 2016 bleaching was off the chart,” says Terry Hughes, of Australia’s Centre of Excellence for Coral Reef Studies, at James Cook University in Queensland. “It was the third major bleaching to affect the Great Barrier Reef, following earlier heatwaves in 1998 and 2002. Now we’re gearing up to study a potential number four. Read More here
Category Archives: PLEA Network
23 March 2017, Independent, If you really care about climate change, you should boycott the ridiculous Earth Hour stunt. The people who are wrecking the planet are the fossil fuel companies, not Georgina from Enfield who occasionally leaves the kitchen light on all night. I am an environmentalist. For my whole adult life I have protested, campaigned, helped to elect climate-savvy politicians and worked hard on what I see as the cause of my life: putting a stop to the dangerous change to our climate that is killing millions. And yet I hate one of the world’s most prominent environmental events with the intense heat of a burning climate – the annual WWF event “Earth Hour”, which this year will take place on 25 March. The charity expects millions of people around the world to symbolically switch off their lights for an hour. Earth Hour is terrible, and not just because the symbolism of darkness is very poorly thought out. The worst thing about Earth Hour is that it tricks people into thinking they’ve done something useful by turning off the lights for 60 minutes, and lets the real villains in the climate change story off the hook. By focusing on individual behaviour, Earth Hour sends out the message that ordinary citizens are the ones to blame for climate change. It passes on the unhelpful message that all we need to do is change our lightbulbs and do more recycling and everything will be fine. Every time someone says that environmentalists are nagging busybodies obsessed with making you turn your TV off standby before you go to bed, Earth Hour has contributed to that. Read More here
23 March 2017, Renew Economy, Fairfax joins media hysteria over post-Hazelwood “blackouts”. The warnings of blackouts provoked by the imminent closure of the Hazelwood brown coal generator in Victoria– already so prevalent on right wing blogs, the Murdoch media and the ABC – reached fever pitched proportions on Thursday. Fairfax Media led the front page of The Age newspaper (see image right) with an “exclusive” story that warned of 72 days of potential blackouts across the state over the next two summers. “Victoria’s energy security has been thrown into question, with the state facing an unprecedented 72 days of possible power supply shortfalls over the next two years following the shutdown of the Hazelwood plant next week,” the story by Josh Gordon begins. And how does it come to this breathless conclusion? Fairfax, like other media, such as the ABC’s political editor, Chris Uhlmann, is basing the forecasts of blackouts on this graph that appears on the website of the Australian Energy Market Operator. It purports to show – in the light red at the top – the periods when Victoria could face a shortfall of supply. The graph for South Australia is even more dramatic. But is that really what is says? Blackouts all summer? Not at all, says the AEMO – a reply they would happily give anyone who bothered to ask. It actually shows the most extreme demand scenarios that it can think of – a one in ten year likelihood in this case – and graphs that over and above what it considers to be the “average” supply. Repeat. That is average supply, not total supply available. Assuming this would lead to blackouts is a bit like saying that someone who walks to the ocean edge at low tide risks getting wet when the tide comes in, and they don’t move. There is plenty of excess capacity that can meet that demand. This graph, is a section known as its Mtpasa forecasts, is basically a heads up that the tide will come in, and generator owners might want to think about maintenance planning, switching them on etc etc, to take it into account. Read More here
21 March 2017, The Guardian, Record-breaking climate change pushes world into ‘uncharted territory’ Earth is a planet in upheaval, say scientists, as the World Meteorological Organisation publishes analysis of recent heat highs and ice lows. The record-breaking heat that made 2016 the hottest year ever recorded has continued into 2017, pushing the world into “truly uncharted territory”, according to the World Meteorological Organisation. The WMO’s assessment of the climate in 2016, published on Tuesday, reports unprecedented heat across the globe, exceptionally low ice at both poles and surging sea-level rise. Global warming is largely being driven by emissions from human activities, but a strong El Niño – a natural climate cycle – added to the heat in 2016. The El Niño is now waning, but the extremes continue to be seen, with temperature records tumbling in the US in February and polar heatwaves pushing ice cover to new lows. “Even without a strong El Niño in 2017, we are seeing other remarkable changes across the planet that are challenging the limits of our understanding of the climate system. We are now in truly uncharted territory,” said David Carlson, director of the WMO’s world climate research programme. “Earth is a planet in upheaval due to human-caused changes in the atmosphere,” said Jeffrey Kargel, a glaciologist at the University of Arizona in the US. “In general, drastically changing conditions do not help civilisation, which thrives on stability.” The WMO report was “startling”, said Prof David Reay, an emissions expert at the University of Edinburgh: “The need for concerted action on climate change has never been so stark nor the stakes so high.” The new WMO assessment also prompted some scientists to criticise Donald Trump. “While the data show an ever increasing impact of human activities on the climate system, the Trump administration and senior Republicans in Congress continue to bury their heads in the sand,” said Prof Sir Robert Watson, a distinguished climate scientist at the UK’s University of East Anglia and a former head of the UN’s climate science panel. Read More here