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Have you seen the latest report released in the leadup to the Paris #climatetalks? http://bit.ly/1oA82Kq via @UNSDSN @iddrilefil
Climate Council @climatecouncil 4m
Have you seen the latest report released in the leadup to the Paris #climatetalks? http://bit.ly/1oA82Kq via @UNSDSN @iddrilefil
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Australian researchers have identified how warm water is increasingly pushing out cold water around Antarctica prompting further ice melt and greater sea level rise.
EMMA ALBERICI, PRESENTER: There’s more research tonight pointing to dramatic changes underway in Antarctica. Australian researchers have identified how warm water is increasingly pushing out cold water around the white continent, prompting more ice to melt and further sea level rises. Margot O’Neill with this exclusive report.
MARGOT O’NEILL, REPORTER: Scientists are ringing alarm bells that all is not well on the vast icy southern continent. US glaciologists have already announced that based on satellite data, the collapse of a giant glacier system in West Antarctica is probably irreversible.
Now a team of Australian scientists for the first time have modelled how subsurface ocean temperatures down to 700 metres are rapidly changing around Antarctica. They were shocked by both the size and the speed of what they discovered.
PAUL SPENCE, CLIMATE CHANGE RESEARCH CENTRE, UNSW: Certainly was for me a very frightening result. I didn’t fully appreciate how sensitive this part of the ocean was to change.
MARGOT O’NEILL: Here’s what they found: below the surface of the Great Southern Ocean, a band of cold water at about minus two degrees encircles Antarctica, protecting its icy mass. Beyond that sits another band of water which is up to four degrees warmer. But their research shows that changing wind patterns thought to be partly due to global warming are pushing currents with warm water in and the cold water out.
PAUL SPENCE: And what we find by using projected wind forces for the end of this century is that the warm water tends to just flood onshore right underneath the grounding lines of the glacial ice sheets, the floating ice shelves.
MARGOT O’NEILL: Warm water melts ice much faster than warm air and the research revealed subsurface warming at twice the rate previously thought. That means the melting of West Antarctic ice shelves could be faster than anticipated in the recent UN climate panel report.
PAUL SPENCE: They weren’t considering the types of temperature of warming that we’re seeing in our model simulations around coastal Antarctica. Now just the West Antarctic Ice Sheet, but we also get significant warming of up to four degrees Celsius in regions of the East Antarctic Ice Sheet as well.
MARGOT O’NEILL: Scientists can’t predict when these warm waters will trigger cascading glacial loss.
PAUL SPENCE: It’s not unlike an avalanche of snow where you don’t quite know when it’s going to happen, but when it happens, it can happen quickly.
MARGOT O’NEILL: It now looks like the effects of a transforming Antarctica will be felt this century.
TAS VAN OMMEN, AUSTRALIAN ANTARCTIC DIVISION: We need to bear in mind that even modest sea level rises, half a metre to a metre, is a very big change and if we’re going to see estimates now of several 10ths of a metre more than that by the end of this century, that’s going to rapidly reshape what we need to consider in our response to sea level rise in the future. What’s concerning us is that with a heavily populated planet, it’s going to reshape our coastlines in ways that matter in this century.
MARGOT O’NEILL: The changing face of the White Continent and what it means is now one of most urgent research areas for climate scientists.
Margot O’Neill, Lateline.
Australian farmers and rural land owners are being told that they will be given powerful and direct incentives to store carbon in the land under the federal government’s new climate policy. But is that…

Australian farmers and rural land owners are being told that they will be given powerful and direct incentives to store carbon in the land under the federal government’s new climate policy. But is that really true?
Both as a researcher and as a revegetation practitioner who’s looked into the practical costs of complying with the expanded Carbon Farming Initiative under the Emissions Reduction Fund, what I’ve seen to date makes me concerned that – paradoxically – the one thing this initiative will not to do is encourage carbon farming. In fact, Australia’s climate policies and systems have been, and continue to be, stacked against the land sector.
The Carbon Farming Initiative is a national, voluntary offset scheme that awards carbon credits for sustainable land management, such as:
It currently works in conjunction with Australia’s carbon price, allowing the biggest polluting firms to invest in the land to help meet their obligations.
With the carbon price looking set to be scrapped by the new Senate, the government’s plan is to fold the Carbon Farming Initiative into its new A$2.55 billion Emissions Reduction Fund.
In a recent speech, Environment Minister Greg Hunt said that there’s not much point in having the most rigorous, gold-plated carbon sequestration rules in the world if it means that nobody participates.
But, in fact, red tape and high costs remain the order of the day, and the lowest carbon cost projections under the Emissions Reduction Fund make it even harder to farm carbon.
For Australia to meet our 2020 Kyoto Protocol emissions target, we need to purchase or cut a total of 421 million tonnes of greenhouse gas emissions.
Cutting 421 million tonnes at the lowest cost possible will only suit projects with a quick payback and rapid execution.
At an average abatement price of just over A$5 per tonne (which is what market analysts Reputex found would need to be to be within the Emissions Reduction Fund’s budget) carbon farming projects will simply not get a look in.
Take a rainforest replanting project in far north Queensland that my business is currently working on, as part of a broader research project involving several universities.
Revegetation costs vary across Australia, but within Queensland’s Wet Tropics it’s typically A$25,000 to A$60,000 per hectare. For this particular project, we think we can get them down to A$8000 a hectare – making revegetation far more affordable.
But under the Carbon Farming Initiative, there are far more costs that need to be taken into account. Its reforestation methodology then requires onerous audits not required of other sectors such as the energy sector.
Land sector auditors are compelled to re-measure trees and validate the government’s modelling at a cost to the landholder of around A$15,000-A$25,000 per audit. Compare this to non-land sector audits – such as checking the emissions of a smoke stack – where audit costs are comparatively small for a ball-park assessment. Under the Emissions Reduction Fund, land sector projects will require a minimum of three audits.
With costs of A$40 a tonne of CO2 suggested by the Australian Farm Institute, our project might break even in a decade. At A$5 a tonne, we wouldn’t break even this millennium.
The impediments for storing carbon in soils are, if anything, worse. The draft soil methodology for sequestering carbon in grazing systems requires landscape mapping of erosion and deposition sites, baseline and follow-up soil sampling by nationally qualified technicians, as well as audits that will likely re-test the soil samples and the government models.
The methodology is emblazoned with caveats warning (at least three times) that management actions are not guaranteed to build soil carbon, reflecting the uncertain underlying science. The methodology seems designed to subsidise the research underpinning soil carbon sequestration at the landholders expense. And all this for a maximum of 2.0 tonnes of CO2-equivalent per hectare!
So it is no surprise that of the mere 135 Carbon Farming Initiative projects listed by the Clean Energy Regulator, 18 have credits issued through storing carbon. There are 0.67 million credits for reforestation and 0.86 million credits for avoiding deforestation. Most carbon sequestration credits have been issued to local councils capturing methane gases emitted from rubbish landfills, and 0.5 million credits for early season burning mostly on indigenous lands.
That there is any appetite at all for sequestering carbon in trees or soils is testament to landholders’ stewardship ethic, and the now-dashed prospects of a reasonable carbon price under an emissions trading scheme.
In an environment now characterised by low ambition and uncertainty, and a hostility to the land sector, credits issued by the Clean Energy Regulator have dropped 72% from 2.2 million in the last quarter of 2013 to 0.6 million in the first quarter of 2014. This stalled carbon project environment is underscored by the fact that the CO2 Group (now called Commodities Group), which has been the largest provider of carbon sink plantings, has shifted to aquaculture.
Adding insult to injury, project start dates under the Emissions Reduction Fund will also be adjusted to 1 July 2014. For anyone working in this space, this will be the third shift: from a start date of 2007 under the Rudd government’s proposed Carbon Pollution Reduction Scheme, to 2010 under the original Carbon Farming Initiative and now 2014 under the Emissions Reduction Fund. There will likely be many landholders who planted trees in good faith over the years who will now find themselves exposed and permanently out of pocket.
The recently released Carbon Abatement Contract discussion paper reveals another show stopper: carbon farmers would need to purchase carbon credits from elsewhere if they were impacted by a natural disturbance such as a cyclone.
In a country defined by natural disturbance, this potentially doubles the costs for the land sector. This is fundamentally a problem with the short-term nature of the Emissions Reduction Fund that does not allow for carbon levels to reach pre-disturbance levels as is currently the case.
The Environment Minister has said that the Emission Reduction Fund will be far more effective at reducing Australia’s emissions than the current carbon price. But Reputex’s recent modelling forecasts that the Emissions Reduction Fund will be able to purchase between 30 and 120 million carbon credits, meaning a likely shortfall of more than 300 million tonnes of greenhouse gas emissions.
Australia’s current carbon price has already reduced emissions by nearly 40 million tonnes. In a world moving towards carbon pricing and emissions trading schemes, we’re the only country dismantling a working carbon price to replace it with what is a feeble voluntary scheme, which will struggle to purchase even a quarter of Australia’s abatement task, and make carbon farming all but invisible.
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| The Elixir of Life – In a Poisoned Chalice?
Posted: 07 Jul 2014 11:47 AM PDT Is life extension science an astonishing promise or an astonishing threat? Or both? It was once a myth, now it’s dream; soon it will become an expectation. Suddenly the science of life extension is producing some remarkable results. New papers hint at the possibility of treatments that could radically increase human longevity(1,2,3,4). So much is happening that it’s hard to know where to begin. But I’ll pick just two of the gathering developments. The first concerns a class of enzymes called sirtuins. This month’s Trends in Genetics states that the question of whether these enzymes could increase longevity in mammals “has now been settled decidedly in the affirmative”(5). Last month a new paper in the journal Aging Cell showed how synthetic small molecules (in other words, potential drugs) can stimulate the production of sirtuins in mice(6). This both extends their lifespan and improves their health. These results show, the paper says, that it’s “possible to design a small molecule that can slow aging and delay multiple age-related diseases in mammals, supporting the therapeutic potential … in humans.” The second development I’ve plucked from the tumult of extraordinary new science concerns an external hormone (a pheromone) secreted by nematode worms, called daumone. A new paper reports that when daumone is fed to elderly mice, it reduced the risk of death by 48% across five months(7). “Daumone could be developed as an anti-aging compound.” There are still plenty of missing steps, not least clinical trials and drug development, but there’s a strong sense that we stand at an extraordinary moment. Who would not want this? To cheat the gods and mock the reaper? The benefits are so obvious that one recent article insists political leaders who fail to provide sufficient funding for life extension science should be charged with manslaughter(8). It’s thrilling, dazzling, awe-inspiring. And rather alarming. The most visible champion of life extension science, Aubrey de Grey, contends that “a lot of people alive today are going to live to 1,000 or more”. He lists four common concerns, that he rejects as “unbelievable excuses … for aging”, “ridiculous” and “completely crazy, when you actually remember your sense of proportion.”(9) On the first count – “wouldn’t it be crushingly boring?” – he’s right. Life, if you have a degree of economic choice, is as exciting as we choose to make it. If it becomes too dull, well, you can just stop taking your medicine. The other concerns are not so easily dismissed. “How would we pay the pensions?” is the second question he ridicules. I would rephrase it: “how would the very old support themselves without crushing the young?”. Even today, there are major distributional problems in countries like the UK. Wealthy elderly people, enjoying the compound interest from investments accumulated across decades, preside over a rentier economy that’s devastating to the young and poor, as house prices and rents become unaffordable(10). The inequality and the potential for exploitation that would emerge if people lived twice, not to mention ten times, as long can only be boggled at. This takes us to another concern he dismisses: “dictators would rule forever”. Is this proposition (if not taken literally) ridiculous? They hang on long enough already, with the help of the best healthcare their stolen billions can buy. Match the political power longevity offers with the economic power, and it’s not impossible to see how a thousand-year life could lead to a thousand-year reich. de Grey’s mockery becomes most offensive when invoked by his fourth rhetorical question: “what about starving Africans?”. Yes, what about them? What if, beyond a certain point, longevity becomes a zero-sum game? What if every year of life extension for those who can afford the treatment becomes a year or more of life reduction for those who can’t? Already, on this planet of finite resources, rich and poor are locked into unacknowledged conflict, as hyperconsumption reduces the planet’s capacity to sustain life. Grain is used to produce meat rather than feeding people directly; the safe operating space for humanity is narrowed by greenhouse gases, industrial pollutants, freshwater depletion and soil erosion(11). It’s hard, after a while, to see how this could produce any outcome other than a direct competition for the means of life, which some must win and others must lose. Perhaps the rich must die so that the poor can live. It’s true that the price of possible longevity treatments, which will be astronomical at first, would soon start to plummet. But this is a world in which many can’t afford even antiseptic ointment; a world in which, even in the rich countries, universal access to healthcare is being slowly throttled by a selfish elite; in which a new era of personalised medicine coincides, by unhappy accident, with a new era of crushing inequality. The idea that everyone would soon have access to these therapies looks unfeasible. It’s possible, as an article in Aeon magazine speculates(12), that two classes of people – the treated and the untreated – could pull inexorably apart, the first living ever longer, the second dying even younger than they do today. I don’t know the answers to these questions, and I’m far from being able to propose solutions. It’s all unknown from now on. But I do know that it’s foolish to dismiss them. Life extension science could invoke a sunlit, miraculous world of freedom from fear and long-term thinking. Or a gerontocratic tyranny. If it’s the latter, I hope I don’t live long enough to see it. References: 1. See for example (among thousands of possibilities): Alexey A Moskalev et al, June 2014. Genetics and epigenetics of aging and longevity. Cell Cycle 13:7, 1063–1077. http://dx.doi.org/10.4161/cc.28433 2. Akiko Satoh and Shin-ichiro Imai, 26 June 2014. Systemic regulation of mammalian ageing and longevity by brain sirtuins. Nature Communications, 5, #4211. doi:10.1038/ncomms5211. http://www.nature.com/ncomms/2014/140626/ncomms5211/full/ncomms5211.html 3. Dena B. Dubal et al, May 2014. Life Extension Factor Klotho Enhances Cognition. Cell Reports, Volume 7, Issue 4, p1065–1076. http://dx.doi.org/10.1016/j.celrep.2014.03.076 5. William Giblin, Mary E. Skinner, and David B. Lombard, July 2014. Sirtuins: guardians of mammalian healthspan. Trends in Genetics, Vol. 30, No. 7, pp271-286. doi: 10.1016/j.tig.2014.04.007 6. Evi M. Mercken et al, 16 June 2014. SRT2104 extends survival of male mice on a standard diet and preserves bone and muscle mass. Aging Cell, doi: 10.1111/acel.12220. http://onlinelibrary.wiley.com/doi/10.1111/acel.12220/pdf 7. Jong Hee Park, 6th May 2014. Daumone fed late in life improves survival and reduces hepatic inflammation and fibrosis in mice. Aging Cell, doi: 10.1111/acel.12224 9. http://www.ted.com/talks/aubrey_de_grey_says_we_can_avoid_aging#t-174230 11. See http://www.kateraworth.com/doughnut/ 12. http://aeon.co/magazine/being-human/will-new-drugs-mean-the-rich-live-to-120-and-the-poor-die-at-60/ |

Gerard LeBlond for redOrbit.com – Your Universe Online
A team of scientists from Reno, Nevada’s Desert Research Institute (DRI), led by Michael Sigl and Joe McConnell, has reconstructed historic volcanic sulfate emissions from the Southern Hemisphere. It is considered to be the most accurate and defined reconstruction to date, and was published in a manuscript in the online addition of Nature Climate Change.
Included in the study and submitting ice core samples and measurements, were researchers from the United States, Japan, Germany, Norway, Australia, and Italy.
“The collaboration between DRI, National Institute of Polar Research (NIPR), and RIKEN just started in the last year, and we were very happy to be able to use the two newly obtained ice core records taken from Dome Fuji, where the volcanic signals are clearly visible. This is because precipitation on the site mainly contains stratospheric components,” Yuko Motizuki from Japan’s largest comprehensive research institution said.
The team used data from numerous individual ice cores collected from various locations across Antarctica. This is the first annual record including data covering the last 2,000 years of human history.
“This (record) provides the basis for a dramatic improvement in existing reconstructions of volcanic emissions during recent centuries and millennia,” said Sigl, the report’s lead author.
According to the team, this was critical to accurately model simulations which are used to evaluate natural and anthropogenic climate forcing from the past. These models highlight the need for environmental policy decisions to regulate greenhouse gas and aerosol emissions and to diminish global warming.
Powerful volcanic eruptions are a major cause in climate inconsistency from the sulfur dioxide they release into the atmosphere. This leads to microscopic particles known as volcanic sulfate aerosols to develop. These particles reflect the sun’s radiation back into space, consequently cooling the Earth. The team measured sulfate deposits found in ice cores from past eruptions, and linked them to short-term regional cooling.
The team gathered data from the West Antarctic Ice Sheet (WAIS), along with other ice core sulfate data and put together the most extensive and detailed record of volcanic sulfate in the region. The study combined 26 precisely synchronized ice core records into an arrangement of 19 sites around Antarctica.
“This work is the culmination of more than a decade of collaborative ice core collection and analysis in our lab here at DRI,” said McConnell, who developed the continuous-flow analysis system used to analyze the ice cores.
Between 2007 and 2009, McConnell was a member of a team that collected cores from the Norwegian-American Scientific Traverse of East Antarctica and in 2011 the WAIS Divide project. “The new record identifies 116 individual volcanic events during the last 2000 years,” he said.
“Our new record completes the period from years 1 to 500 AD, for which there were no reconstructions previously, and significantly improves the record for years 500 to 1500 AD,” Sigl added.
DRI previously assisted with the international Past Global Changes (PAGES) effort and with the new record they added to it constructing a more detailed and accurate account of 2,000 years of global temperature for the individual continents.
Ice core observations were compared to simulations of volcanic sulfate transport combined with a coupled aerosol-climate model. They were used to investigate patterns of sulfate deposits in Antarctica.
“Both observations and model results show that not all eruptions lead to the same spatial pattern of sulfate deposition. Spatial variability in sulfate deposition means that the accuracy of volcanic sulfate reconstructions depends strongly on having a sufficient number of ice core records from as many different regions of Antarctica as possible,” said Matthew Toohey from the German institute GEOMAR Helmholtz Centre for Ocean Research Kiel.
The researchers were able to determine from the study that the two most recent eruptions in the region (Samalas in 1257 and Kuwae in 1458) deposited 30 to 35 percent less sulfate in Antarctica, meaning that they had a weaker effect on cooling of the global climate than previously thought.
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Read more at http://www.redorbit.com/news/science/1113185668/antarctic-ice-core-research-volcanic-forcing-070714/?utm_content=buffer915bb&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer#k15WPmthTqYycpZz.99