Sentences with phrase «global carbon dioxide emissions over»

Scientists say it is urgent that policy makers halve global carbon dioxide emissions over the next 50 years or risk triggering changes that could be irreversible.

Not exact matches

While overall emissions of greenhouse gases from CDP's «Global 500» have shrunk from 4.2 billion to 3.6 billion metric tons of carbon dioxide equivalent since 2009, the index's 50 largest - emitting firms have actually seen greenhouse gas emissions rise by 1.65 percent over the same period, the organization has found.

He added that the strategy outlined in the report showed that it was economically feasible to cut global carbon dioxide (CO2) emissions by almost 50 % over the next 43 years.

When scientists warn that emissions of carbon dioxide and other greenhouse gases (GHGs) may cause a global warming of 1.5 - 4.5 C over the next 100 years, one possible reaction is: «So what?

Over the last three decades, five IPCC «assessment reports,» dozens of computer models, scores of conferences and thousands of papers focused heavily on human fossil fuel use and carbon dioxide and greenhouse gas emissions, as being responsible for «dangerous» global warming, climate change, climate «disruption,» and almost every «extreme» weather or climate event.

The Independent Online reports that an unprecedented coalition of blue - chip US companies and environmental lobby groups will urge President Bush next week to get serious about global warming, calling for caps on carbon dioxide emissions that would cut greenhouse gases by 10 - 30 per cent over 15 years.

This value is the government's best estimate of how much society gains over the long haul by cutting each ton of the heat - trapping carbon - dioxide emissions scientists have linked to global warming.

They report that stopping deforestation and allowing young secondary forests to grow back could establish a «forest sink» — an area that absorbs carbon dioxide rather than releasing it into the atmosphere — which by 2100 could grow by over 100 billion metric tons of carbon, about ten times the current annual rate of global fossil fuel emissions.

To many economists and policy - makers, a market - based means of limiting carbon dioxide emissions makes sense, given that they are produced in every sector of the global economy, with impacts felt over the entire planet.

Most climate studies like those that look at global warming and its links to carbon dioxide emissions have examined changes that emerge gradually and steadily over decades or centuries.

Data from the Energy Information Administration show, for example, that the United States cut carbon dioxide emissions by 12 percent between 2005 and 2012 while global emissions increased by 15 percent over the same period.

First, no one I know disputes that the global climate has been warming over the past century and a half, that sea levels have indeed been rising, or that human activities, including carbon dioxide emissions, have and will continue to contribute «some influence.»

If that trend continues, the IEA says, global carbon - dioxide emissions will keep rising sharply and climate models suggest the Earth could heat up by as much as 6 °C (10.8 °F) over the long term.

Reductions in some short - lived human - induced emissions that contribute to warming, such as black carbon (soot) and methane, could reduce some of the projected warming over the next couple of decades, because, unlike carbon dioxide, these gases and particles have relatively short atmospheric lifetimes.The amount of warming projected beyond the next few decades is directly linked to the cumulative global emissions of heat - trapping gases and particles.

«No one I know disputes that the global climate has been warming over the past century and a half, that sea levels have indeed been rising, or that human activities, including carbon dioxide emissions, have and will continue to contribute «some influence.»

THE proliferation of renewables unreliables over the past decade has not, and will not, result in statistically significant reductions in global carbon dioxide emissions.

Over all the Dutch agency found that global emissions of carbon dioxide, the leading greenhouse gas, were unchanged last year.

Over the past decade, ExxonMobil shareholders have offered resolution after resolution calling for the oil and gas company to take positive steps toward reducing carbon dioxide emissions and to be more open and transparent regarding the effect its products have on our global climate system.

It is therefore difficult to see how the Intergovernmental Panel on Climate Change (the IPCC) can maintain there is a 95 per cent probability that human emissions of carbon dioxide have caused most of the global warming that has occurred over the last several decades (4).

All of the above is background to one of the great mysteries of the climate change issue... how the Intergovernmental Panel on Climate Change (the IPCC) can maintain there is a 95 per cent probability that human emissions of carbon dioxide have caused most of the global warming that has occurred over the last several decades (4).

You may wonder why the government finds the need to pursue such action since 1) U.S. carbon dioxide emissions have already topped out and have generally been on the decline for the past 7 - 8 years or so (from technological advances in natural gas extraction and a slow economy more so than from already - enacted government regulations and subsidies); 2) greenhouse gases from the rest of the world (primarily driven by China) have been sky - rocketing over the same period, which lessens any impacts that our emissions reduction have); and 3) even in their totality, U.S. carbon dioxide emissions have a negligible influence on local / regional / global climate change (even a immediate and permanent cessation of all our carbon dioxide emissions would likely result in a mitigation of global temperature rise of less than one - quarter of a degree C by the end of the century).

«Aside from eliminating emissions and avoiding 1.5 °C degrees global warming and beginning the process of letting carbon dioxide drain from the Earth's atmosphere, transitioning eliminates 4 to 7 million air pollution deaths each year and creates over 24 million long - term full - time jobs by these plans,» Professor Jacobson said.

Assuming the IPCC's value for climate sensitivity (i.e. disregarding the recent scientific literature) and completely stopping all carbon dioxide emissions in the U.S. between now and the year 2050 and keeping them at zero, will only reduce the amount of global warming by just over a tenth of a degree (out of a total projected rise of 2.619 °C between 2010 and 2100).

(1) Because of a growing concern over the possible consequences of global warming, which may be caused in part by increases in atmospheric carbon dioxide (a major greenhouse gas), and also because of the need for accurate estimates of carbon dioxide emissions, the Energy Information Administration (EIA) has developed factors for estimating the amount of carbon dioxide emitted as a result of U.S. coal consumption.

The company's environmental policy is also nothing to sneeze at: It is a member of the Clinton Global Initiative Energy & Climate Change Working Group and has trimmed carbon dioxide emissions by over 10 percent since 2006, with an investment of over a cool $ 2 million.