Mechanism for rapid warming in northern hemisphere and Arctic temperatures uncovered

Ancient tree reveals cause of spike in Arctic temperature: 30,000 year old kauri tree reveals atmospheric mechanism that led to Dansgaard-Oeschger event during last glacial period, 12 Sep 2017 by the University of New South Wales A kauri tree preserved in a New Zealand peat swamp for 30,000 years has revealed a new mechanism that may explain how temperatures in the …

Study of contrarian papers: rife with methodological errors and no cohesive, consistent alternative theory to human-caused global warming

 Galileo demonstrating his astronomical theories. Climate contrarians have virtually nothing in common with Galileo. Photograph: Tarker/Tarker/Corbis By Dana Nuccitelli, 22 Feb 2017, The Guardian Those who reject the 97% expert consensus on human-caused global warming often invoke Galileo as an example of when the scientific minority overturned the majority view. In reality, climate contrarians have almost nothing in common with Galileo, whose conclusions were based on …

Utilities Knew: Power Providers Had Info/Acknowledged Impacts of Climate Change 50 Years Ago

8/3/2017 – BY ENERGY AND POLICY INSTITUTE Scientists had begun to warn electric utilities about climate change by 1968, and by 1988 the industry’s official research and development organization had acknowledged that, “There is growing consensus in the scientific community that the greenhouse effect is real.” Despite this early knowledge about climate change, electric utilities have continued to invest heavily in …

Droughts, forest fires, El Niño keep CO2 ppm in atmosphere rising even though overall CO2 emissions are close to constant

August 17th, 2017 by The Beam  It seems to confound logic – despite CO₂ emissions from fossil fuels and industry remaining at a constant level, the concentration of CO₂ in the atmosphere has experienced a record-breaking increase. This might lead you to believe that the measurement of CO₂ emissions is wrong or that the data is incorrect. But as Senior Researcher at …

Highlights from Fred Pearce and Joe Romm

Fred Pearce – notes from With Speed & Violence, references are to the Kindle page number “Concern about our raw materials casts a dark shadow over mankind,” he wrote, in an early outburst of twentieth century environmental concern. “Our descendants surely will censure us for having squandered their just birthright.” His great fear was that oil supplies would dry up, …

‘Shit Is Hitting the Fan,’ Climate Scientists Warn

By Andrea Germano The “shit is hitting is the fan,” said noted climate scientist James Hansen, countering “this narrative out there…that we have turned the corner on dealing with the climate problem.” Hansen is lead author of a new study that warns that there “is no time to delay” on climate change efforts and argues that they must go beyond just slashing emissions of CO2—”the dominant …

Increasing droughts, lower crop yields (just 40% already in Utah and forecast to go to 10%), and increased stress and conflict

A new study by MIT climate scientists, economists, and agriculture experts finds that certain hotspots in the country will experience severe reductions in crop yields by 2050, due to climate change’s impact on irrigation. The most adversely affected region, according to the researchers, will be the Southwest. Already a water-stressed part of the country, this region is projected to experience …

Inequality link to climate change

Income is may explain 30 percent of the total household carbon emissions in Europe (likely more in the US where inequality is higher).  Rising incomes are expected to increase greenhouse gas emissions because people will have greater purchasing power. “It makes sense that the richer you are, the greater your purchasing power and the environmental impacts associated with it,” she …

Allowable ‘carbon budget’ most likely overestimated

While most climate scientists, including the Intergovernmental Panel on Climate Change, implicitly define “pre-industrial” to be in the late 1800’s, a true non-industrially influenced baseline is probably further in the past, according to an international team of researchers who are concerned because it affects the available carbon budget for meeting the 2 degrees Celsius (3.6 degrees Fahrenheit) warming limit agreed …