29 September 2016, Climate Home, No, South Australian blackouts were not caused by renewables. Media and political claims that province’s high proportion of wind energy is to blame for power outages are completely unfounded. When the sun is shining and the breeze trims the blades of the turbines, it’s easy to forget that Australia remains a country with a deep native suspicion of renewable energy. How else to explain the extraordinary, unfounded response to a traumatic Wednesday for South Australians when a huge storm ripped through state and all the lights went out? Before residents’ power was even returned politicians and journalists were lining up to suggest, with no evidence, that South Australia’s high concentration of renewable energy was in some way to blame for the crisis. The nation’s papers of note were quick to find cause where there was none. By early evening on Wednesday, while people were still trying to negotiate their way home through the darkened Adelaide streets, The Age ran with a story titled ‘South Australia pays the price for heavy reliance on renewable energy’. That story had the ignominy of being republished by the British Global Warming Policy Foundation, a well-known purveyor of crank science. Later the Age had topped the piece with the apologetic caveat: “This analysis was written in the immediate aftermath of the blackout. For more recent updates, please click here”. The next morning, dangling unexplained within The Australian’s front page story on the blackouts was an oblique reference to the fact that the state has a large proportion of renewable energy. The Daily Mail ran with “Are the GREENS responsible for South Australia’s blackout?” None of these stories produced any evidence that the blackout and the 40% of its electricity South Australia gets from wind were related. Meantime, ElectraNet, the company that runs the state’s distribution network said the disruption had happened because four transmission lines were down and another 23 towers had been damaged. But by then, certain politicians had worked out that this was a golden opportunity to tar by insinuation. Deputy prime minister Barnaby Joyce told ABC radio: “With the strong reliance on wind power, there is an exceptional draw that’s then put on the network from other sources when that wind power is unable to be generated.”Read More here
Yearly Archives: 2016
27 September 2016, Climate Central, The World Passes 400 PPM Threshold. Permanently. In the centuries to come, history books will likely look back on September 2016 as a major milestone for the world’s climate. At a time when atmospheric carbon dioxide is usually at its minimum, the monthly value failed to drop below 400 parts per million. That all but ensures that 2016 will be the year that carbon dioxide officially passed the symbolic 400 ppm mark, never to return below it in our lifetimes, according to scientists. Because carbon pollution has been increasing since the start of the Industrial Revolution and has shown no signs of abating, it was more a question of “when” rather than “if” we would cross this threshold. The inevitability doesn’t make it any less significant, though. September is usually the month when carbon dioxide is at its lowest after a summer of plants growing and sucking it up in the northern hemisphere. As fall wears on, those plants lose their leaves, which in turn decompose, releasing the stored carbon dioxide back into the atmosphere. At Mauna Loa Observatory, the world’s marquee site for monitoring carbon dioxide, there are signs that the process has begun but levels have remained above 400 ppm. Read more here
22 September 2016, The Conversation, The Great Barrier Reef’s ‘new normal’ is a forlorn sight. Images of this year’s coral bleaching on the Great Barrier Reef shocked the world. Some tour operators expressed concern that the extensive and sometimes simplistic media coverage would hurt their businesses. The reef was a hot-button issue during the federal election, with both major parties pledging funding for programs to enhance water quality. Some politicians and tour operators expressed optimism about the reef’s ability to recover. It was the culmination of the longest, most extensive and most severe mass coral bleaching event ever recorded – an event that began in the North Pacific in mid-2014. The Great Barrier Reef was not spared, this year experiencing its hottest sea surface temperatures since records began – 29.1℃ in February (1.1℃ above the 1961-90 average), 29.1℃ (1.3℃ above average) in March and 27.8℃ (1.0℃ above average) in April. Evidence of bleaching was found on 93% of the more than 900 individual reefs surveyed that month, with the most severe impacts on the most pristine and isolated reefs of the far north. A preliminary estimate is that 22% of coral has now died, with 85% of these deaths occurring between Cape York and just north of Lizard Island. Read More here
21 September 2016, Climate News Network, Solar cycle not to blame for warming. New research confirms that increased greenhouse gas levels − rather than solar radiation impacts − are the key factor in global climate change. European scientists have dug deep to dismiss once again the old argument that climate change might be a consequence of solar radiation rather than atmospheric chemistry. The world is warming, they confirm, because more greenhouse gases are getting into the atmosphere, and the changes in the solar cycle are not a significant factor. This is not the first such reassurance. Teams of researchers have in the last few years eliminated cosmic radiation as a factor in climate change and confirmed that sunspots, too, can be declared innocent. But in 2011, with backing from the European Co-operation in Science and Technology (COST), scientists set up their own project. They wanted to better understand the relationship between the cyclically changing patterns of sunlight and variations in climate, against a background of global warming. Solar variability The TOSCA project – which stands for “towards a more complete assessment of the impact of solar variability on the Earth’s climate”− is a co-operation involving solar physics, geomagnetism, climate modelling and atmospheric chemistry. The scientists went for a global approach, with 61 researchers from many disciplines working together to examine as many aspects as possible that might link variations in the sun’s behaviour with variations in climate. And they have summarised the story-so-far in a new report. What they identified is solar mechanisms that could alter regional climate, but none that could trigger global warming. Read More here