20 May 2016, Renew Economy, Why we must ‘think global, act local’ on climate change. Many catchy slogans come and go: “Just do it”, “Carpe Diem”, “play hard.” But out of all of them, “think global, act local” is the one that resonates the most with me, and seems to apply best in this age when we are all connected but still have individual responsibilities.It’s a slogan that’s become more and more applicable in an era of distributed energy when every consumer that wants to, can make a difference at the local level. Disruptive technology typically depends on many individuals making small individual decisions that collectively have large impacts on corporate behaviour. In that spirit and as part of the “cognitive surplus” its seems worthwhile to pull together three articles that summarise some well known, and some slightly less well known, features of the global context that underlies the unfolding energy transformation in Australia. Article 1 today is a very brief and familiar summary of the global warming data and the primary contributors to CO2 emissions. Article 2 will summarise the global renewable energy picture; and Article 3 will look at some of the recent global data and analysis, including China and India coal-fired electricity generation and economics. Global temperature. I prefer to look at the global temperature in percentage terms. That’s because, in my experience, 1 degree doesn’t sound like something very important to the man in street, who is used to daily fluctuations of 10 degrees or more. Using percentages has its own problems, as Centigrade percentages will differ from Fahrenheit and, for the truly obsessed, Kelvin scales. Our primary data source is the National Oceanic and Atmospheric Administration (NOAA) and we like to use a 20-year moving average as the most smoothed form of data. The disadvantage of moving averages is that they are out of date and give equal weight to old observations This can be seen in the chart below. For that reason the ABS uses a “Henderson” trend for monthly and quarterly data, which gives more weight to the current observations and less weight to the older observations. Any stats-inclined people out there who want to calculate a 20-year Henderson weight, please get in touch. Here’s the chart then. The anomaly average for calendar 2016 year to date is 1.13°C, about 8 per cent above the 20th century average. GOOD SERIES OF GRAPHS IN ARTICLE. Read More here
Category Archives: PLEA Network
16 May 2016, MSF, IF EUROPE TURNS ITS BACK NOW THE CONCEPT OF ‘REFUGEE’ WILL CEASE TO EXIST. This week Europe celebrated unity and peace on Europe Day. But in 2016 we fear its leaders, like Australia’s Prime Minister Malcolm Turnbull and Opposition Leader Bill Shorten, are united in turning their backs on those seeking our protection. In March, Europe’s leaders passed a deal with Turkey that allows Greece to send people back to Turkey in exchange for, among other things, a multi-billion Euro financial aid package. Sound familiar? Just like Australia’s “push back” policy and offshore detention program this new agreement, the so-called “EU-Turkey Deal”, threatens the right of all people to seek asylum and violates governments obligations to assist each man, woman or child asking for protection. Putting people’s lives or health at risk and causing suffering in asylum seekers is not a justifiable way to stop others risking their lives at sea, or worse, to control borders. Pushing people back to their country of last transit or banishing them to offshore detention transforms asylum into nothing but a political bargaining chip to keep refugees as far away from our borders and the eyes of the voting public as possible. “It betrays the humanitarian principle of providing impartial aid based on need, and need alone, without political strings attached” In exchange for this deal, Europe promises “humanitarian” and development aid to fulfill the needs of Syrian refugees and presents these funds as a measure to ease human suffering. But this aid to willing neighbours such as Turkey (just like the aid given to Papua New Guinea and Nauru), is conditional on shipping suffering offshore. It betrays the humanitarian principle of providing impartial aid based on need, and need alone, without political strings attached. By offering billions of euros to care for people out of sight in Turkey, Europe is also asking aid agencies to become complicit in their border control scheme. The Australian government has also referred to its push back policy as ‘humanitarian’. It has similarly funded it at the cost of its overseas development aid budget. But there is nothing whatsoever humanitarian about denying people their right to seek protection, and instead leaving people to suffer or die out of sight.Read More here
16 May 2016, Renew Economy, Vanadium: the ‘beautiful metal’ that stores energy. An unheralded metal could become a crucial part of the renewables revolution. Vanadium is used in new batteries which can store large amounts of energy almost indefinitely, perfect for remote wind or solar farms. And what’s more there is loads of the stuff simply lying around in industrial dumps. Don’t let the dumpster diving put you off – never mind gold or silver, vanadium may just be the most beautiful metal of all. It’s the 22nd most abundant element in the Earth’s crust, though it’s rarely found naturally in its metallic form. Instead, vanadium can be found in more than 100 different minerals. Once extracted and dissolved in water, various forms of vanadium turn into bright, bold colours. It’s even named after “Vanadis”, the old Norse name for the Scandinavian goddess of beauty, Freyja. Vanadium is not only beautiful, but also strong. Adding small percentages of it creates exceptionally light, tough and more resilient steel alloys. Henry Ford was the first to use it on an industrial scale, in the 1908 Model T car chassis, and today the vast majority of vanadium is used in structural steel, mainly to build bridges and buildings. Vanadium flow batteries The unique properties of vanadium make it ideal for a new type of batteries that may revolutionise energy systems in the near future – redox flow batteries. Batteries store energy and generate electricity by a reaction between two different materials – typically solid zinc and manganese. In flow batteries, these materials are liquid and have different electric charges. Both are pumped into a “cell” where the electric current is generated. A tiny membrane separates the two liquids, so they are able to react but don’t come into direct contact. Vanadium is used in these batteries as it can convert back and forth from its various different states, which can carry different positive charges. As only one material is used, the risk of cross contaminationis eliminated. The liquids have an indefinite life, so the replacement costs are low and there are no waste disposal problems. Also, the battery is extended to a potentially infinite lifetime. Watch ‘How the Vanadium battery works’ video here In flow batteries, the energy production and capacity are independent. Energy is stored in tanks, whereas the capacity depends only on the amount of liquid stored. This provides a great design flexibility that other batteries do not allow. They are also safer, as the two liquids don’t mix causing a sudden release of energy. Even President Obama is impressed. Read More here
7 May 2016, The Conversation, Sea-level rise has claimed five whole islands in the Pacific: first scientific evidence. Sea-level rise, erosion and coastal flooding are some of the greatest challenges facing humanity from climate change. Recently at least five reef islands in the remote Solomon Islands have been lost completely to sea-level rise and coastal erosion, and a further six islands have been severely eroded. These islands lost to the sea range in size from one to five hectares. They supported dense tropical vegetation that was at least 300 years old. Nuatambu Island, home to 25 families, has lost more than half of its habitable area, with 11 houses washed into the sea since 2011. This is the first scientific evidence, published in Environmental Research Letters, that confirms the numerous anecdotal accounts from across the Pacific of the dramatic impacts of climate change on coastlines and people. A warning for the world Previous studies examining the risk of coastal inundation in the Pacific region have found that islands can actually keep pace with sea-level riseand sometimes even expand. However, these studies have been conducted in areas of the Pacific with rates of sea level rise of 3-5 mm per year – broadly in line with the global average of 3 mm per year. For the past 20 years, the Solomon Islands have been a hotspot for sea-level rise. Here the sea has risen at almost three times the global average, around 7-10 mm per year since 1993. This higher local rate is partly the result of natural climate variability. These higher rates are in line with what we can expect across much of the Pacific in the second half of this century as a result of human-induced sea-level rise. Many areas will experience long-term rates of sea-level rise similar to that already experienced in Solomon Islands in all but the very lowest-emission scenarios. Read More here