14 December 2017, The Conversation, Not just heat: even our spring frosts can bear the fingerprint of climate change. In recent years, scientists have successfully identified the human fingerprint on hot years, heatwaves, and a range of other temperature extremes around the world. But as everyone knows, climate change affects more than just temperature. The “signal” of human-induced climate change is not always clear in other weather events, such as cold snaps or episodes of extreme rainfall. Three new studies, released today as part of a special edition of the Bulletin of the American Meteorological Society, take a closer look at two such events, both of which happened in southern Australia in mid-2016: the frosts that hit Western Australia’s South West, and the extremely wet weather that hit much of southeastern Australia during that year’s winter and early spring. Perhaps surprisingly, WA’s frosts showed a fingerprint of climate change, due to changes in weather patterns. Meanwhile, there was very little climate change signal in the extreme rainfall that hit the southeast. While there is a clear human-driven upward trend in Australia’s average temperatures and the future of southern Australia is projected to be dry in the cool seasons, last year Australia experienced its wettest winter and September on record. Meanwhile, September in WA’s South West brought up to 18 frost nights across the region – the most on record in some locations. An increasing temperature trend would limit the number of extreme cold events, and broadly speaking this is true for Australia. So what caused the record frost risk in South West WA in September 2016? For the northern hemisphere, a “wobbly” jet stream has been proposed as the cause of periodic blasts of extreme cold weather. In this theory, human-driven changes to atmospheric circulation cause Arctic air to temporarily extend southwards over populated areas, bringing Arctic weather in spite of the background warming trend. But this kind of theory hasn’t been examined in depth for Australia. Read More here
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14 December 2017, The Guardian, National Australia Bank stops all lending for new thermal coal projects. National Australia Bank says it will halt all lending for new thermal coal mining projects, becoming the first major Australian bank to phase out support of thermal coal mining. While the bank will continue providing finance for coal projects already on its books, NAB said an orderly transition to a low-carbon Australia was critical for the economy and for continued access to secure and affordable energy. “While we will continue to support our existing customers across the mining and energy sectors, including those with existing coal assets, NAB will no longer finance new thermal coal mining projects,” the bank said in a statement on Thursday. “This is a market-leading position for an Australian bank and is even stronger than the position taken by Commonwealth Bank last month because it is formal policy,” Greenpeace campaigner Jonathan Moylan said. The Commonwealth Bank indicated to shareholders in November that it would not fund new, large coal projects, saying its support for coal would continue to decline as it helps finance the transition to a low-carbon economy. ING has promised to phase out coal within a decade and has committed to stop funding any utility company which relies on coal for more than 5% of its energy. ANZ and Westpac both have policies that limit lending to new coal projects under certain conditions. “NAB has lifted the bar above its competitors by becoming the first major bank to end lending to all new thermal coal mining,” said Julien Vincent, executive director of environmental finance advocates Market Forces. “This policy means NAB joins the ranks of dozens of banks and insurance companies globally that are withdrawing from this most climate-polluting of industries.” The World Bank has also announced it will “no longer finance upstream oil and gas, after 2019” in an effort to be consistent with the Paris Agreement goal of limiting warming to 1.5C. Read More here
14 December 2017, The Conversation, Instead of congratulating ICAN on its Nobel Peace Prize, Australia is resisting efforts to ban the bomb. Earlier this week in Oslo, the 2017 Nobel Peace Prize was officially givento the International Campaign to Abolish Nuclear Weapons (ICAN), a global campaign that was launched in Melbourne in 2007. ICAN lobbied to establish a special UN working group on nuclear disarmament, campaigned for the UN General Assembly’s December 2016 resolution to launch negotiations on a prohibition treaty, and was an active presence at the UN conference that negotiated the treaty. Prime Minister Malcolm Turnbull failed to congratulate the Australian faces of ICAN, adding to the growing body of evidence of his flawed political judgement. There were no political downsides to phoning ICAN, noting the difference of opinion on the timing and means to effective nuclear disarmament, but warmly congratulating ICAN for the global recognition of its noble efforts to promote nuclear peace. Out of step with the global nuclear order The global nuclear order has been regulated and nuclear policy directions set by the Nuclear Non-Proliferation Treaty (NPT) since 1968. The 2015 Iran nuclear deal and North Korea’s unchecked nuclear and missile delivery advances show the benefits and limitations of the NPT respectively. The transparency, verification and consequences regime mothballed Iran’s bomb-making program by enforcing its NPT non-proliferation obligations. These will remain legally binding even after the deal expires in 2030. By contrast, the crisis over North Korea’s nuclear program has intensified within the NPT framework. Heightened geopolitical tensions in Europe, the Middle East and south and east Asia have further stoked nuclear fears. Meanwhile the NPT-recognised five nuclear weapon states have no plan to abolish their nuclear arsenals. Frustrated by the stubborn resistance of the nuclear weapon states to honour their NPT commitment to nuclear disarmament and alarmed by rising nuclear threats, on July 7 this year, 122 countries adopted a UN treaty to stigmatise and ban the bomb. Read More here
13 December 2017, World Weather Attribution, Climate Change Fingerprints Confirmed in Hurricane Harvey’s Record-Shattering Rainfall. Scientist with World Weather Attribution (WWA) find that human-caused climate change made the record rainfall that fell over Houston during Hurricane Harvey roughly three times more likely and 15 percent more intense. WWA is releasing the findings of its new analysis regarding the role of human-induced climate change on Hurricane Harvey’s devastating rains that is published in the peer-reviewed journal, Environmental Research Letters (ERL). The findings are being released jointly with the American Geophysical Union (AGU) in a joint press release and at a press conference on Wednesday, December 13 at 2:30 p.m. CT at the annual AGU Fall Meeting in New Orleans. The paper can be found on our website and in Environmental Research Letters.