13 November 2017, The Conversation, Fossil fuel emissions hit record high after unexpected growth: Global Carbon Budget 2017. Global greenhouse emissions from fossil fuels and industry are on track to grow by 2% in 2017, reaching a new record high of 37 billion tonnes of carbon dioxide, according to the 2017 Global Carbon Budget, released today. The rise follows a remarkable three-year period during which global CO₂ emissions barely grew, despite strong global economic growth. But this year’s figures suggest that the keenly anticipated global peak in emissions – after which greenhouse emissions would ultimately begin to decline – has yet to arrive. Read more: Fossil fuel emissions have stalled: Global Carbon Budget 2016 – The Global Carbon Budget, now in its 12th year, brings together scientists and climate data from around the world to develop the most complete picture available of global greenhouse gas emissions. In a series of three papers, the Global Carbon Project’s 2017 report card assesses changes in Earth’s sources and sinks of CO₂, both natural and human-induced. All excess CO₂ remaining in the atmosphere leads to global warming. We believe society is unlikely to return to the high emissions growth rates of recent decades, given continued improvements in energy efficiency and rapid growth in low-carbon energies. Nevertheless, our results are a reminder that there is no room for complacency if we are to meet the goals of the Paris Agreement, which calls for temperatures to be stabilised at “well below 2℃ above pre-industrial levels”. This requires net zero global emissions soon after 2050. Read More here
Tag Archives: Emissions
10 November 2017, Climate News Network: Geo-engineering can work – if the world wants it. Geo-engineering can stop the Earth warming, at least in theory, scientists say, but doubts persist over the possible risks. Climate scientists now know that geo-engineering – in principle at least – would halt global warming and keep the world at the temperatures it will reach by 2020. It is simple: inject millions of tons of sulphate aerosols into the stratosphere at carefully chosen locations, and keep on doing so for as long as humans continue to burn fossil fuels and release greenhouse gases into the atmosphere. The desired effect: global temperatures will be contained because the pollutants in the upper atmosphere will dim the sun’s light and counteract the greenhouse effect of all the carbon dioxide pumped from power stations, vehicle exhausts, factory chimneys and burning forests. It won’t be the perfect answer. The oceans will go on becoming more acidic, and the skies will become subtly darker. Rainfall patterns could be affected. Repairs to the ozone layer – an invisible shield against dangerous ultraviolet radiation – would be slowed.The volumes of sulphate aerosols that would need to be flown to stratospheric heights and released each year would continue to grow as humans went on burning ever more fossil fuels. The technical and energy demands of such an operation would be colossal. There could be serious geopolitical problems about the impacts and responsibility for such decisions. But, at least in principle, researchers now believe geo-engineering could be made to work. “For decision makers to accurately weigh the pros and cons of geo-engineering against those of human-caused climate change, they need more information,” said Ben Kravitz, of the Pacific Northwest National Laboratory, and one of a consortium which has published a succession of five studies in the Journal of Geophysical Research – Atmospheres. “Our goal is to better understand what geo-engineering can do – and what it cannot.” Read More here
9 November 2017, DeSmog, Climate Denier Lamar Smith Holds Rare Congressional Hearing on Geoengineering. Geoengineering, hailed in some circles as a potential technofix to the climate change crisis, has taken a step closer to going mainstream. The U.S. House Committee on Science, Space, and Technology held a rare joint subcommittee hearing on November 8, only the second ever congressional hearing of its kind on the topic (the first was held in 2009). The committee invited expert witnesses to discuss the status of geoengineering research and development. Geoengineering is a broad term encompassing sophisticated scientific techniques meant to reverse the impacts of climate change or pull greenhouse gases out of the atmosphere. Ironically, the Committee on Science, Space, and Technology is chaired by U.S. Rep. Lamar Smith — a climate science denier who has received tens of thousands of dollars in campaign contributions from ExxonMobil throughout his political career. In fact, Smith actually mentioned “climate change” in his opening remarks for the hearing, in discussing his interest in geoengineering. “As the climate continues to change, geoengineering could become a tool to curb resulting impacts,” said Smith, who recently announced he will not run for relection in 2018. “Instead of forcing unworkable and costly government mandates on the American people, we should look to technology and innovation to lead the way to address climate change. Geoengineering should be considered when discussing technological advances to protect the environment.” In the past, Smith has denied climate change in stark terms, referring to those who believe in climate science as “alarmists” in a 2015 op-ed published by The Wall Street Journal. “Climate alarmists have failed to explain the lack of global warming over the past 15 years,” Smith said at the time. “They simply keep adjusting their malfunctioning climate models to push the supposedly looming disaster further into the future.” Smith has since pivoted to less skepticism about the science, saying at a March 2017 congressional hearing that “climate is changing and humans play a role” and that it’s now just a question of the “extent” to which human activity is the culprit (it is). So perhaps geoengineering, labeled by its critics for years now as a false solution to the climate crisis, will be a “pivot” of sorts for converted deniers and their bankrollers? Read More here
6 November 2017, Bloomberg, How China and Environmentalists Became Unlikely Bedfellows. If politics make strange bedfellows, few are more unlikely than the growing link between China and the environmentalists seeking to rein in climate change. The nation that spews the most pollution and is building dozens of coal-fired power plants is also winning accolades from the likes of Greenpeace and WWF for its efforts to fight global warming and steer an eventual path away from fossil fuels. “Air quality kills competitiveness, kills people — that’s a big driver for China,” said Rachel Kyte, a United Nations special representative who leads the Sustainable Energy for All program. “How that translates into their leadership beyond the way they’re already leading is something that will be important to watch.” Once a wrecker of global warming deals, China under President Xi Jinping is moving to shape the consensus on how to rein in greenhouse gases after President Donald Trump decided to scale back U.S. involvement. China’s ambitions on climate will be on display this week, when Trump arrives in Beijing on Nov. 8 to meet Xi, and on the other side of the world where envoys from almost 200 nations gather starting Monday in Bonn for UN climate talks. Read More here