10 September 2015, The Conversation, Sure, winter felt chilly, but Australia is setting new heat records at 12 times the rate of cold ones. Spring feels like a welcome relief from an Australian winter that felt very cold and very long. Melbourne has just shivered through its coldest winter in 26 years and Canberra hibernated through more cold nights than any winter since 1997. But while it felt cold, it turns out we’ve just become accustomed to unusually warm conditions. My new study online in Geophysical Research Letters (with my colleague Andrew King) shows that Australia has been losing out on cold temperature records over the past 55 years. We investigated the frequency of new hot and cold temperature records for months, seasons and years, for each state and Australia as a whole, from 1910 to 2014. The results were straightforward. Record-breaking hot temperatures have outnumbered new cold records by a factor of 12 to 1 since the beginning of this century. The cause is also clear: global warming. Yet people’s ability to recognise climate extremes is easily affected by our perceptions. Riding my bike around frosty Canberra this winter felt brutally and unusually cold. But in reality it was only a bit colder than recent “warm” winters. Such misperceptions about climate extremes are common. During the record-breaking spring temperatures in Australia in 2013, Prime Minister Tony Abbott said: “…the thing is that at some point in the future, every record will be broken, but that doesn’t prove anything about climate change. It just proves that the longer the period of time, the more possibility of extreme events.” At first pass, this sounds like common sense. But statistically, it’s wrong. In an unchanging climate, new temperature records actually become less likely to occur with time, because each new record would be harder to beat in the absence of anything driving temperatures in a particular direction. Read More here
Category Archives: PLEA Network
9 September 2015, Energy Post, The Urgenda judgment: a “victory” for the climate that is likely to backfire. The Dutch government has decided to appeal the widely publicised “Urgenda” ruling from the district court in The Hague, ordering the Netherlands to step up its climate change actions. According to Lucas Bergkamp, Partner at Hunton & Williams and Emeritus Professor of International Environmental Liability Law at Erasmus University Rotterdam, there are good reasons why we should hope that the court of appeals will overturn the ruling. According to Bergkamp, it sets a dangerous precedent for judicial activism, is inconsistent with European law and will even undermine international climate negotiations. Read More here
8 September 2015, ARENA, Three months on and Nyngan is flying. The largest solar power plant in Australia and the Southern Hemisphere in Nyngan, NSW, is fully operational and has generated 60,000 MWh of renewable energy to date, according to the Australian Renewable Energy Agency (ARENA). Since achieving full generation in June 2015, the plant has been sending 102 MW of solar-generated electricity into the National Electricity Market. ARENA CEO Ivor Frischknecht said the successful beginning of Nyngan’s operations was a significant milestone in the development of Australia’s large-scale solar sector. “AGL’s Solar Project at Nyngan and Broken Hill represents a big investment by the company and also by ARENA,” Mr Frischknecht said. “It’s already achieving one of ARENA’s key aims of increasing the amount of renewable energy in Australia. “And the knowledge gained from its successful launch and ongoing operations will lead to further improvements in technology and reductions in costs for the sector.” The solar plant, a partnership between AGL Energy Limited (AGL) and First Solar, is expected to produce around 230,000 MWh of electricity annually which is sufficient to meet the needs of approximately 33,000 NSW homes. Read More here
7 September 2015, The Conversation, Restoring and conserving nature in the Anthropocene means changing our idea of success. The Earth has unofficially entered a new epoch – the Anthropocene. It suggests that humans are the dominant influence on the planet’s ecosystems and biosphere – the sum total of life and non-living material on Earth. Many ecosystems have changed so radically that it is no longer possible to restore them to what they once were, and in other situations it is not appropriate. Instead we need to look at what we can change, accept the things we can’t, and recognise that humans are now an important part of nature. Restore, reclaim, reintroduce? Accepting humans as part of nature will require a shift away from traditional views of restoration and conservation. Governments and communities worldwide spend enormous sums of money and countless hours of work on restoration projects, aiming to reverse the degradation that we have wrought over the past few centuries. The United Nations, for example, has agreed to a target of restoring 150 million hectares of land by 2020, costing about US$18 billion each year. In Australia, federal and state governments have several very large restoration programs targeting, in one case, the Murray-Darling Basin – to protect and restore the degraded flowing waters and wetlands of our most iconic river system – and, in another, the Great Barrier Reef – to maintain and restore the universal value of our most iconic marine ecosystem. There is an elephant in the room. In most cases, restoration efforts aim to return ecosystems to a state closer to what they looked like in the past and how they functioned before modern society. This target is often termed an “historical baseline” . Read More here