1 July 2016, Independent. ‘Global climate emergency’ over jet stream crossing equator dismissed by scientists. ‘There isn’t a wall at the equator separating the two hemispheres, and air is free to flow from one side to the other’. Two bloggers have made a stunning claim that has spread like wildfire on the Internet: They say the Northern Hemisphere jet stream, the high-altitude river of winds that separates cold air from warm air, has done something new and outrageous. They say it has crossed the equator, joining the jet stream in the Southern Hemisphere. One said this signifies that the jet stream is ‘wrecked‘, the other said it means we have a “global climate emergency”. But these shrill claims have no validity — air flow between the hemispheres occurs routinely. The claims are unsupported and unscientific, and they demonstrate the danger of wild assertions made by non-experts reaching and misleading the masses. Read More here
Category Archives: Communication
15 April 2016, Renew Economy, Turnbull’s Jekyll and Hyde climate and clean energy policy. Environment minister Greg Hunt this week has been on a mini-tour of Western Australia, with the head of the Australian Renewable Energy Agency – which he wants to de-fund – announcing the sort of grants for solar and battery storage installations that he wants to stop. If there was any hint of irony in praising the work of ARENA and taking credit for the initiatives of an institution that the Coalition has spent much of the last three years trying to abolish, it was not immediately apparent. “The Turnbull government is providing $17 million funding for nine new R&D projects set to deliver renewable energy technologies and solutions suited to the 21st century,” Hunt proudly announced in a press release, before enthusing at the opening about the potential for Australia to lead the world in battery storage. “I’m delighted to announce that in partnership with Synergy, the Australian government is contributing $3.3 million for a community household storing of – solar storage and energy facility,” he told a gathering of media and dignitaries. “Behind us we have 1.1 million hours’ worth of storage. This is the real world, this is the future that is behind us in terms of storage, solar energy on the roofs in front of us, the storage behind us.” And on it went. Indeed, Hunt’s speech was a compilation of everything that people find confusing and dumbfounding about this Turnbull government. Australia will be among the first to formally sign the Paris climate deal, but it still hasn’t the domestic targets or the policies to get anywhere near its share of meeting that agreement; it professes support for wind and solar but has no new developments to show for it; it claims to have brought certainty to the renewable energy industry, when the only certainty in the last three years has been the lack of investment; it hails innovative solar and storage projects and then removes the funding mechanism that makes them possible; it applauds the work of a key agency it has tried to dismantle and finally strips it of funding; it wants to cease grants to clean energy projects “to protect taxpayers money” but then uses grants to polluters as the basis of its emissions reduction fund. Read More here
13 April 2016, The Guardian, It’s settled: 90–100% of climate experts agree on human-caused global warming. There is an overwhelming expert scientific consensus on human-caused global warming. Authors of seven previous climate consensus studies — including Naomi Oreskes,Peter Doran, William Anderegg, Bart Verheggen, Ed Maibach, J. Stuart Carlton,John Cook, myself, and six of our colleagues — have co-authored a new paper that should settle this question once and for all. The two key conclusions from the paper are:
1) Depending on exactly how you measure the expert consensus, it’s somewhere between 90% and 100% that agree humans are responsible for climate change, with most of our studies finding 97% consensus among publishing climate scientists.
2) The greater the climate expertise among those surveyed, the higher the consensus on human-caused global warming.
Expert consensus is a powerful thing. People know we don’t have the time or capacity to learn about everything, and so we frequently defer to the conclusions of experts. It’s why we visit doctors when we’re ill. The same is true of climate change: most people defer to the expert consensus of climate scientists. Crucially, as we note in our paper: Public perception of the scientific consensus has been found to be a gateway belief, affecting other climate beliefs and attitudes including policy support. Read More here
14 January 2016, Yale Connections, Experts Fault Reliance on Satellite Data Alone. Over-reliance on satellite data to the exclusion of other data can amount to ‘confirmation bias,’ say scientists urging analysis of numerous different data sets. This month’s “This is Not Cool” video focuses on an ongoing, and again festering, climate science controversy, the value and reliability of satellite-derived global temperatures. And of that data at the exclusion of – or as a surrogate for – other data. Independent videographer Peter Sinclair sought reactions of leading climate scientists to points made in a recent hearing of the Senate Commerce, Science and Transportation Committee, chaired by Texas Republican Senator and presidential nominee hopeful Ted Cruz. “According to the satellite data, there has been no significant global warming for the past 18 years,” the senator said.In the hearing, Senator Cruz emphasized that “The satellite data are the best data we have,” an often-echoed point made by those generally scornful of much of the so-called consensus climate science. Climate scientists Michael Mann, Kevin Trenberth, Andrew Dessler, Carl Mears, and Ben Santer, David Titley, and others voice what they see as limitations or shortcomings of the satellite data. They point to a history of documented errors and mistakes that have often caused satellites to underestimate climate warming.Among these errors are a failure to account for “orbital decay,” changes measuring in the diurnal cycle, and faulty calibration of satellite sensors. Most of all, they discourage over-reliance on any single set of data and instead urge consideration of numerous authoritative data sets. Remote Sensing Systems scientist Carl Mears points to inherent problems in reviewing data only from a particular point in time, especially the often-chosen 1998 starting point, which was characterized by a strong El Niño. “If you start driving at the top of a hill, you’re going to go down, at least at the beginning,” says Mears. Andrew Dessler of Texas A&M says he sees in all this an example of “confirmation bias,” with climate contrarians often looking only at data that “tells them what they want to hear.” Read More here