Laser cutting techniques are usually powered by high energy beams, so hot that they melt most materials. Now scientists from McGill University have developed a gentler, more precise technique using low-power visible light.
The threshold for dangerous global warming will likely be crossed between 2027 and 2042 – a much narrower window than the Intergovernmental Panel on Climate Change’s estimate of between now and 2052. In a study published in Climate Dynamics, researchers from McGill University introduce a new and more precise way to project the Earth’s temperature. Based on historical data, it considerably reduces uncertainties compared to previous approaches.
Due to processes occurring over vast ranges of scale, from fast to slow and from small to large, extreme weather and climate events aren’t as rare as scientists have thought – and that could complicate efforts to determine when extreme events signal perilous climate change, according to a new analysis published in the journal Scientific Reports.
A new method for projecting how the temperature will respond to human impacts supports the outlook for substantial global warming throughout this century – but also indicates that, in many regions, warming patterns are likely to vary significantly from those estimated by widely used computer models.
The 2015 United Nations Climate Change Conference, COP 21, will be held in Paris from November 30 to December 11.
The atmosphere is so unstable that a butterfly flapping its wings can, famously, change the course of weather patterns. The celebrated “butterfly effect” also means that the reliability of weather forecasts drops sharply beyond 10 days.
International Business Times | July 22, 2014
By: Jayalakshmi K
Global temperatures between 1998 and 2013 indicate a slowdown in global warming, but this was due to natural cooling fluctuation and not due to any decrease in greenhouse gas emissions - this has been proved by statistical analysis of the temperatures, conducted by McGill University physics professor Shaun Lovejoy.
Published on June 9, 2014 | The Gazette
by: Shaun Lovejoy
Last year, the Quebec Skeptics Society laid down a challenge: “If anthropogenic global warming is as strong as scientists claim, then why do they need supercomputers to demonstrate it?”
My immediate response was: “They don’t.”
