Category Archives: The Science

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22 November 2016, Renew Economy, Climate conspiracy grips Senate as Coalition attacks latte-sipping opponents of coal. The influence of president-elect Donald Trump’s attack on “elites” is taking hold in the Australian parliament, with the Coalition attacking “latte-sipping” opponents of coal mining and joining enthusiastically in a debate questioning climate science in the Senate. Frydenberg was asked in question time by Greens MP Adam Bandt about a US government report delivered in at the Marrakech climate talks that warned, amongst other things, of a 1.5m rise in sea levels by 2050 if greenhouse emissions continued at current levels. Frydenberg responded by claiming that Australia had an “ambitious” climate target for 2030 and had been praised “for innovation” and its work on carbon capture and storage at the recent climate talks in Marrakech. A few hours later, Canada announced it would phase out traditional coal fired generation by 2030 as part of its “vision for a clean growth economy”. The UK is phasing out coal by 2023, and France is phasing out coal too, although it has taken a rain check on that idea because one third of its nuclear fleet are sidelined by safety concerns.“It it is okay for the member for Melbourne to put his sandals up on the seat, sip his soy latte, sit in the streets of Brunswick and say that it is the end of coal,” but coal would continue to be part of the mix for decades to come, Frydenberg said. Read More here

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17 November 2016, Environmental Research Letters Research priorities for negative emissions. ABSTRACT: Carbon dioxide removal from the atmosphere (CDR)—also known as ‘negative emissions’—features prominently in most 2 °C scenarios and has been under increased scrutiny by scientists, citizens, and policymakers. Critics argue that ‘negative emission technologies’ (NETs) are insufficiently mature to rely on them for climate stabilization. Some even argue that 2 °C is no longer feasible or might have unacceptable social and environmental costs. Nonetheless, the Paris Agreement endorsed an aspirational goal of limiting global warming to even lower levels, arguing that climate impacts—especially for vulnerable nations such as small island states—will be unacceptably severe in a 2 °C world. While there are few pathways to 2 °C that do not rely on negative emissions, 1.5 °C scenarios are barely conceivable without them. Building on previous assessments of NETs, we identify some urgent research needs to provide a more complete picture for reaching ambitious climate targets, and the role that NETs can play in reaching them. Read More here

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15 November 2016, Climate News Network, Record losses as global warming worsens. While governments continue to negotiate on climate change, meteorological scientists warn that the global warming situation is rapidly deteriorating. As summers get hotter, seas get warmer and extreme wind and rainstorms inflict ever-greater loss of human life and property, the World Meteorological Organisation (WMO) is trying to develop and early warning system for vulnerable countries and regions. In a report yesterday to governments at the UN’s COP22 climate talks in Marrakesh, Morocco, the WMO said that 2016 was almost certain to be the warmest year on record, and detailed the “considerable socio-economic losses in all regions of the world” that has resulted. The deadliest event so far in 2016 has been Hurricane Matthew, which was Haiti’s worst humanitarian disaster since the 2010 earthquake, killing 546 people and injuring 438. Petteri Taalas, the WMO secretary-general, said: “Another year, another record. The high temperatures we saw in 2015 are set to be beaten in 2016. Continued global warming “The extra heat from the powerful El Niño event has disappeared, but the heat from global warming will continue.” “In parts of Arctic Russia, temperatures were 6°C to 7°C above the long-term average. Many other Arctic and sub-Arctic regions in Russia, Alaska and northwest Canada were at least 3°C above average. We are used to measuring temperature records in fractions of a degree, and so this is different. “Because of climate change, the occurrence and impact of extreme events has risen. ‘Once in a generation’ heatwaves and flooding are becoming more regular. Sea level rise has increased exposure to storm surges associated with tropical cyclones.” Read More here

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31 October 2016, The Conversation, Unnatural disasters: how we can spot climate’s role in specific extreme events. These days, after an extreme weather event like a cyclone, bushfire, or major storm, it’s common to find people asking: was it climate change? We also often hear people saying it is impossible to attribute any single weather event to climate change, as former prime minister Tony Abbott and the then environment minister Greg Hunt said after the bushfires in New South Wales in 2013. While this may have been true in the 1990s, the science of attributing individual extreme events to global warming has advanced significantly since then. It is now possible to link aspects of extreme events to climate change. However, as I describe in an article co-written by Susan Hassol, Simon Torok and Patrick Luganda and published today in the World Meteorologcal Organization’s Bulletin, how we communicate these findings has not kept pace with the rapidly evolving science. As a result, there is widespread confusion about the links between climate change and extreme weather. Evolving science The science of attributing individual extreme weather events to climate change dates back to 2003, when a discussion article in Nature raised the question of liability for damages from extreme events. The idea was that if you could attribute a specific event to rising greenhouse gas emissions, you could potentially hold someone to account. This was soon followed by a 2004 study of the 2003 European heatwave, which caused more than 35,000 deaths. This analysis found that climate change had more than doubled the risk of such extreme heat. Read More here