1 March 2017, Climate News Network, Spring moving forward at record rate. Spring is arriving ever earlier in the northern hemisphere. One sedge species in Greenland is now springing to growth 26 days earlier than it did a decade ago. And in the wintry United States, spring arrived 22 days early this year in Washington DC, the national capital.The evidence comes from those silent witnesses, the natural things that respond to climate signals. The relatively new science of phenology – the calendar record of first bud, first flower, first nesting behaviour and first migrant arrivals – has over the last three decades repeatedly confirmed meteorological fears of global warming as a consequence of the combustion of fossil fuels. Researchers say the evidence from the plant world is consistent with the instrumental record: 2016 was the hottest year ever recorded, and it was the third record-breaking year in succession. Sixteen of the hottest years ever recorded have happened in the 21st century. Arctic spring And the most dramatic changes are observed in the high Arctic, the fastest-warming place on the planet, according to a study in Biology Letters. As the polar sea ice retreats, the growing season gets ever longer – and arrives earlier. The pattern is not consistent: grey willow sticks to its original timetable, and dwarf birch growth has advanced about five days earlier for each decade. But the sedge, almost four weeks ahead of its timetable in a decade, holds the record, according to a study that observed one plot at a field site in West Greenland, 150 miles inland, for 12 years. Read More here
Category Archives: PLEA Network
28 February 2017, Climate News Network, Inequalities fuel human impacts on climate. For the second time this year, a group of climate scientists has called for a new approach to climate change research to produce a better and more precise idea of how the world will change as global average temperatures rise. The call comes only weeks after a distinguished international team reminded researchers that some details of the planetary climate machine are still unresolved – such as what happens to all the carbon released by fossil fuel combustion, and how rainfall patterns will change in the decades to follow. Neither group is challenging the general climate models, which broadly predict that, unless action is taken, global average temperatures could rise by 4°C and global sea levels by a metre or so. What each wants is more detailed answers. The latest call comes from a team of US and Japanese scientists, who argue in their report in National Science Review journal that the human dimension is missing. What people do over the next decades will feed back into the mechanics of climate change. Missing dimensions The missing dimensions of the human impacts and contribution, they say, are threefold: the economic inequalities that stoke conflict and drive migration; the levels and patterns of consumption of resources that fuel these inequalities; and the numbers of people consuming these resources and demanding energy to improve their lives over the next two generations. For instance, the scientists say, human choices make a difference. The rate of atmospheric concentrations of the greenhouse gases carbon dioxide, methane and nitrous oxide increased 700-fold, 1,000-fold and 300-fold respectively after the “green revolution” of the 1960s, compared with pre-industrial levels. Population growth was a factor. So was economic growth. And this corresponded to a doubling of human impacts every 17 years. “The doubling of this impact is shockingly rapid,” says the study leader, Safa Motesharri, a systems scientist at the University of Maryland’s National Socio-Environmental Synthesis Centre. Read More here
19 February 2017, Bloomberg Fears Grow That Climate Conflicts Could Lead to War. Among the 21st-century threats posed by climate change — rising seas, melting permafrost and superstorms — European leaders are warning of a last-century risk they know all too well: War. Focusing too narrowly on the environmental consequences of global warming underestimates the military threats, top European and United Nations officials said at a global security conference in Munich this weekend. Their warnings follow the conclusions of defense and intelligence agencies that climate change could trigger resource and border conflicts. “Climate change is a threat multiplier that leads to social upheaval and possibly even armed conflict,” the UN’s top climate official, Patricia Espinosa Cantellano, said at the conference, which was attended by the U.S. secretaries of defense and homeland security, James Mattis and John Kelly. Even as European Union countries struggle to assimilate millions of African and Middle Eastern migrants and refugees, security officials are bracing for more of the same in the future. Secretary General Antonio Guterra named climate change and population growth as the two most serious “megatrends” threatening international peace and stability. Read More here
1 February 2017, Renew Economy, Eight reasons why Dr Finkel is great news for Australia’s energy future. Our electricity grid looks likely to progress more systematically to a cleaner more secure future thanks to Australia’s Chief Scientist Dr Alan Finkel being brought in – to lead the analysis and policy recommendations. For those who could not make Tuesday night’s 2.5 hour session in Adelaide with him, here are some of the key comments made by him and his team:
1. Dr Finkel and SA’s Chief Scientist Leanna Read both see the grid becoming 100% renewable powered as the end point.
2. Dr Finkel is walking the talk: all electricity at his home is sourced from green power electricity and he is an electric car user.
3. He and his team will travel shortly to other renewable energy leading regions with few grid interconnections to share best practices for SA (Texas and Ireland), to high penetration locations committing to further quick transitions to distributed renewables (California, New York, Denmark, France, UK and Germany) and meeting GE and Siemens who are leading in creating distributed grid systems and controllers and grid storage. Read More here