13 December 2015, Renew Economy, Lomborg legacy: Why Turnbull Coalition still doesn’t get it. In the final, frantic, virtually sleepless hours in Paris before the global climate deal was finalised on Saturday, Australia found itself on the outer of a powerful international movement. Canada, once joined at the hip with Australia as one of the developed world’s two “climate dunces”,signed up to the Coalition for High Ambition – a 100-strong grouping of countries pushing for an ambitious climate treaty that sought to limit global warming to 1.5°C. Then came Brazil, breaking away from its traditional allies India and China to declare that “if you want to tackle climate change, you need ambition and political will.” It was not a formal voting block, but its influence in the final days of the talks was critical. This was acknowledged by the cheers in the plenary session on the final day of the Paris talks when Marshall Islands foreign minister Tony de Brum walked in at the head of his coalition colleagues. Australia was not among them. It had found itself marginalised as we explained on Friday, by the lingering impact of Tony Abbott’s war on climate policies and renewable energy. Foreign minister Julie Bishop then made a last minute bid to sign Australia up. But it wasn’t until the Coalition had arrived on the floor of the plenary session where France announced – to general acclimation – that the finalised text would be soon released, that Bishop managed to secure her “pin”. By then, it was all but over. Read More here
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13 December 2015, Climate News Network, Cold water poured on warming pause. COP21: Scientists say pressure from climate sceptic voices may have led to credibility being given to the mistaken claim that there is evidence of a hiatus in global warming. The so-called, and much debated, hiatus in global warming may never have happened, according to new research The scientists say there is no substantive evidence for a recent flattening of the curve in the increase in global average temperatures: in other words, no pause, no slowdown in global warming. “We suggest,” they add, “that the use of those terms is therefore inaccurate.” But first, and briefly, the story so far. In the 1990s, planetary temperatures rose steadily, reaching a then all-time high in 1998. In the 21st century, temperatures on average continued to rise, but the rate of increase seemed to be lower. Even so, 13 of the 14 hottest years ever have happened this century, and 2014 was thehottest year ever. Denialists, sceptics and contrarians seized on the apparent slowdown and claimed that global warming had stopped. And teams of climate scientists were drawn, like moths to a flame, again and again to the question of whether there really was a slowdown − and, if so, why. Unexplained data They kept doing so because that is how science works: researchers worry away at unexplained data. They evaluate each other’s hypotheses, try to kick them to death, and then propose an alternative. So, in the course of the last three years, scientists have variously accepted that global warming was never going to proceed at a steady, inexorable rate, that some Atlantic Ocean cycle might be at play to damp atmospheric temperatures, or that the heat might have disappeared into the Pacific depths. They have also proposed that an increase in volcanic activity may have masked solar radiation, and that extremes of temperature were on the increase even if the average appeared not to be rising intemperately. Read More here
13 December 2015, The Guardian, Malcolm Turnbull lifts Abbott ban on government finance for wind power. Malcolm Turnbull has lifted the ban imposed by Tony Abbott on wind investment by the Clean Energy Finance Corporation (CEFC) before it was officially enacted, even though it remains Coalition policy to abolish the green bank. A spokeswoman for the prime minister said the new CEFC investment mandate – issued by the environment minister, Greg Hunt, and the finance minister, Mathias Cormann – reflected “the Turnbull government’s strong support for renewables and innovation”. “The mandate puts the CEFC’s focus on new and emerging renewables technologies, rather than supporting well-established technologies that are financially viable without government support,” the spokeswoman said. In the wake of the new mandate and the Paris agreement, various stakeholders in the renewable sector were optimistic that the CEFC decision could reboot the government’s relationship with the clean energy industry. The new mandate says: “As part of its investment activities in clean energy technologies, the corporation must include a focus on supporting emerging and innovative renewable technologies and energy efficiency, such as large scale solar, storage associated with large and small scale solar, offshore wind technologies, and energy efficient technologies for cities and the built environment.” Read More here
11 December 2015, The Conversation, Climate and the rise and fall of civilizations: a lesson from the past. 2015 will likely be the hottest year on record, beating the previous record set only in 2014. It is also likely to be the first year the global average temperature reaches 1℃ above pre-industrial temperatures (measured from 1880-1899). Global warming is raising temperatures, and this year’s El Niño has pushed temperatures higher still. Although 2015 is unusually hot, 1℃ symbolically marks the halfway point to 2℃, widely considered to be the threshold of “dangerous” climate change. In fact an additional 0.5-1℃ is actually masked by sulphur aerosols which we have added to the atmosphere alongside greenhouse gases. A temperature level of 1℃ (above pre-industrial levels) is similar to or warmer than the peak temperatures of the early Holocene epoch approximately 8,000-7,200 years ago. Studies of the early Holocene provide clues to what was such a world like. The climate roller-coaster The last ice age (or Last Glacial Maximum) peaked around 26,000 years ago. The earth warmed over the coming millennia, driven by an increase in radiation from the sun due to changes in the earth’s orbit (the Milankovic cycles) amplified by CO₂ released from warming water, which further warmed the atmosphere. But even as the earth warmed it was interrupted by cooler periods known as “stadials”. These were caused by melt water from melting ice sheets which cool large regions of the ocean. Marked climate variability and extreme weather events during the early Holocene retarded development of sustainable agriculture. Sparse human settlements existed about 12,000 – 11,000 years ago. The flourishing of human civilisation from about 10,000 years ago, and in particular from 7,000 years ago, critically depended on stabilisation of climate conditions which allowed planting and harvesting of seed and growing of crops, facilitating growth of villages and towns and thereby of civilisation. Read More here