20 February 2016, Climate News Network, Carbon rise keeps water in drylands. Increased carbon dioxide in the atmosphere because of climate change is helping to turn the world’s drylands a more luxuriant green − but that’s not necessarily good news. The drylands of the world are getting greener, and researchers think it is thanks to higher levels of carbon dioxide in the atmosphere. In a paradoxical discovery, even as landscapes become increasingly at risk of desertification, they may also look more luxuriant. Two scientists from Purdue University in Indiana, US, and a researcher in Saudi Arabia report in the journal Scientific Reports that they analysed 45 satellite studies from eight countries to confirm that the drylands of the world are responding to global warming and climate change by getting greener.Their conclusion is that rising levels of the greenhouse gas that is warming the planet – a consequence of humans’ combustion of fossil fuels over the last two centuries – are also delivering extra fertilisation to plants, so that photosynthesis can function with less water. In turn, this means that more soil water stays in the ground. Negative feedback “We know from satellite observations that vegetation is greener than it was in the past,” says Lixin Wang, an Earth scientist from Purdue, and one of the authors of the report. “We now understand why that is occurring, but we don’t necessarily know if it is a good thing or not.” The observation seems to suggest that nature is delivering what engineers call negative feedback: as the Earth warms because of the rising greenhouse gas levels, so vegetation is responding to grow more vigorously and soak up more carbon. This has been observed before, but it may not be a good thing because one consequence of climate change is that drylands everywhere – and they are home to around two billion people – are likely to become increasingly parched, with cruel consequences for the world’s poorest people who make up most of those two billion. Nor is it certain that all drylands will respond with more vigorous growth. For some terrains, ecological devastation could increase. Read More here
hmcadmin
18 February 2016, Energy Post, Biofuels are back on the EU agenda. Biofuels are returning to the political agenda in Europe as EU policymakers start to shape a strategy for reducing greenhouse gas emissions from transport after 2020. Biofuels producers continue to argue that they are an essential part of the solution, even as the low oil price puts an end to several cutting-edge projects, the European Commission prepares to publish a new report about indirect land-use change (ILUC) and some stakeholders urge a full focus on electrification. Sonja van Renssen investigates. “Are we competitive? Certainly not in the short term, but the long term is what matters,” said Artur Auernhammer, a Member of the German Parliament and Chairman of the German Bioenergy Association (BBE) in his opening speech at a “Fuels of the Future” conference in Berlin, Germany, on 18 January. “Certified sustainable biofuels from Europe must be a key element in the European decarbonisation strategy both at present and beyond 2020.” Dr Veit Steinle from the German Federal Ministry of Transport and Digital Infrastructure concurred: “If the Energiewende is to be implemented properly in Germany, we need an energy transition in transport. Of course we’re putting money on biofuels in this regard.” “If we look at the current development of oil prices, it is very certain that at least in the short to medium term, the regulatory framework will be very, very important for the perspectives of biofuels.” – Bernd Kuepker, European Commission It is equally obvious for EU biofuels producers that they are part of the solution. But others have moved on. Jos Dings, Executive Director of Brussels-based NGO Transport and Environment, said in an interview: “The big change since the [EU’s] first climate and energy package [in 2008] is the rise of electric vehicles. In contrast, we’ve seen very little progress in liquid fuels.” Still, Gernot Klepper, Chairman of the Board for ISCC System, which certifies bio-based feedstocks and renewables, reminded delegates in Berlin that biofuels make up about a fifth of final energy consumption in transport in 2050, in the International Panel on Climate Change (IPCC)’s two degrees scenario. Read More here
17 February 2016, The Guardian, The key to halting climate change: admit we can’t save everything. Climate change, and human resistance to making the changes needed to halt it, both continue apace: 2015 was the hottest year in recorded history, we may be on the brink of a major species extinction event in the ocean, and yet political will is woefully lacking to tackle this solvable problem. Given these dire ecological trends, limited public funding and legislative gridlock, the time is ripe for a budget-neutral, executive-branch approach for managing our natural resources: triage. A science-based triage approach should be used to classify areas and species into one of three categories: not at immediate risk, in need of immediate attention or beyond help. Refusing to apply triage implicitly assumes that we can save everything and prevent change, which we cannot. Prioritization will occur regardless, just ad hoc and shrouded. This triage system would replace the status quo of inadequately managing our full portfolio of over 1m square miles of public land and 1,589 threatened and endangered species. For areas or species not at immediate risk, we can delay action while monitoring to detect changes in that status. For example, increased temperatures and prolonged periods of drought may increase both wildfires and populations of tree-killing beetles in forests of the Pacific north-west. Knowing this, we can track these variables and explore management options that minimize risk without prematurely devoting disproportionate resources. For areas needing immediate help, we must act now. For the coral reefs of the Florida Keys and US Virgin Islands, all anthropogenic impacts (such as overfishing, pollution and coastal development) must be dramatically reduced. Otherwise, because the health of these coral reefs is currently so compromised, they are unlikely to survive the sea level rise, rising ocean temperatures and increasing acidification resulting from climate change. For species protections, it would be wise to focus on keystone species such as oysters (water filterers), parrotfish (algae eaters on overgrown coral reefs), bees (pollinators) and wolves (key predators). For areas we can no longer maintain, we must make the most difficult of choices – give up, and accept that change is not always preventable. In Alaska, it may be too late to prevent the climate change-induced shift from coniferous-dominated to deciduous-dominated stands, with unfortunate impacts on forest-dwelling species and the logging industry. In the ocean, entire fisheries can be lost from an area when species shift due to warming waters. Read More here
17 February 2016, Eureka Alert, Assessing carbon capture technology. Carbon capture and storage could be used to mitigate greenhouse gas emissions and thus ameliorate their impact on climate change. The focus of this technology is on the large-scale reduction of carbon emissions from fossil-fuelled power plants. Research published in the International Journal of Decision Support Systems investigates the pros and cons, assesses the risks associated with carbon capture and provides a new framework for assessing the necessary technology. John Michael Humphries Choptiany formerly of Dalhousie University in Nova Scotia and now at the Food and Agriculture Organization of the United Nations in Rome, Italy, together with colleagues at Dalhousie, Alberta Innovates – Technology Futures (AITF), and G BACH Enterprises Incorporated, explain how they have adopted information from the environmental, social, economic and engineering fields to create their assessment framework, which incorporates utility curves, criterion weights, thresholds, decision trees, Monte Carlo simulation, critical events and sensitivity analysis. “Climate change is one of the most serious threats facing humankind,” the team reports, “Carbon capture and storage (CCS) includes a suite of technologies and processes with the goal of mitigating climate change by capturing and storing anthropogenic CO2 from various emitters, including fossil-fuelled power plants, in geological reservoirs.” The Intergovernmental Panel on Climate Change (IPCC) has recognized that CCS should be one component of our response to carbon emissions and climate change, but there are many different approaches that could be taken, all with various risks. Read More here