Sentences with phrase «if emissions of carbon dioxide»

If emissions of carbon dioxide, nitrous oxide, and methane are all allowed to accelerate to 2050, they could cause three feet of sea - level rise by 2900 through thermal expansion alone.

If our emissions of carbon dioxide are causing the world to warm and lead into possibly difficult times in the future, it is important also to establish the upsides of such emission.

Not exact matches

Even if the ambitious targets of the world's biggest economies are met, and internal combustion engines give way to electric or other zero - emission vehicles by 2040, the total impact on global carbon dioxide emissions will be minimal, according to a new study released Tuesday.

And it remains to be seen whether natural gas delivers environmental benefits — such as reduced emissions of carbon dioxide when burned — given that it in itself is a potent greenhouse gas if it escapes during drilling or pipeline operations, so - called fugitive emissions.

He also models the global warming that would occur if concentrations of greenhouse gases in the atmosphere were to be doubled (due to increases in carbon dioxide and methane emissions from dragons and the excessive use of wildfire).

Imagine if the world's two largest polluters unilaterally decide to cut emissions of carbon dioxide, the ubiquitous gas responsible for the bulk of global warming.

A rather straightforward calculation showed that doubling the level of carbon dioxide in the atmosphere... which would arrive in the late 21st century if no steps were taken to curb emissions... should raise the temperature of the surface roughly one degree C. However, a warmer atmosphere would hold more water vapor, which ought to cause another degree or so of warming.

If these rates continue, emissions of methane, a greenhouse gas 25 times more powerful than carbon dioxide on 100 - year time scales, will increase 4 percent over the next decade.

Even if the United States implements all current and proposed policies, it would miss its 2025 target by as much as 1.5 billion metric tons of carbon dioxide per year — roughly 20 % of the nation's total emissions, according to the analysis published today in Nature Climate Change.

«If all 40 of the facilities are built, their carbon dioxide emissions would be an astonishing 110 billion tons,» Jackson said.

«It is very important to know the sources of carbon dioxide in running waters as well as the processes controlling respiration and emissions if we are to understand what happens when the environment changes,» says Erin Hotchkiss, researcher at Umeå University.

If your goal is to help reduce carbon dioxide emissions, then maybe you should switch to LEDs now,» said Lixi Liu, first author of the study and a doctoral student at the U-M School for Environment and Sustainability and at the Department of Mechanical Engineering.

«If ozone continues to increase, vegetation will take up less and less of our carbon dioxide emissions, which will leave more CO2 in the atmosphere, adding to global warming,» Sitch says.

«If we charge the car from a clean source of electricity and combine this with the lowest possible carbon dioxide emissions during production, then the electric car will be revolutionary.

According to a report from Imperial College London, we are going to have to halve our carbon dioxide emissions by 2050 if we want avoid dangerous levels of climate change.

«If all the coal - burning power plants that are scheduled to be built over the next 25 years are built, the lifetime carbon dioxide emissions from those power plants will equal all the emissions from coal burning in all of human history to date,» says John Holdren, a professor of environmental policy at Harvard University's Kennedy School of Government.

Given those findings and the rest of the improved understanding of the climate system, the IPCC projects that if carbon dioxide gas emissions — the primary cause of warming — continue to grow at the recent rate, the world would warm 2oC above 19th - century levels by the middle of this century.

«If there are no further interventions by these governments, expect to see strong increases in urban car travel and urban energy and carbon dioxide emissions in China and India and elsewhere around the world,» said Lew Fulton, a co-author and co-director of the NextSTEPS Program at the Institute of Transportation Studies at UC Davis.

Adds Aronson: «We absolutely must control emissions of the principal greenhouse gas, carbon dioxide, if we are going to preserve life in the oceans in some approximation of the way it should be.»

By burying 60 percent of its carbon dioxide emissions deep underground, the 275 - megawatt FutureGen plant, to be built in Mattoon, Illinois, seeks to show that coal can be, if not exactly clean, then at least cleaner.

-- If a reversal has occurred with respect to an offset project for which offset credits are reserved under this paragraph, the Administrator shall retire offset credits or emission allowances from the offsets reserve to fully account for the tons of carbon dioxide equivalent that are no longer sequestered.

If we embark on a path that is equivalent to setting emissions to zero now (say by having a period of negative emissions in the 2035 to 2050 time frame), and call the sequestration we accomplish mitigation then mitigation can arrest climate change, make adaptation unneeded and bring us to a safe concentration of carbon dioxide in the atmosphere as Hansen has pointed out.

But if people were better at using less electricity, which accounts for 38 percent of carbon dioxide emissions in the United States, the potential for reducing emissions would be huge.

Stable atmospheric concentrations of greenhouse gases would lead to continued warming, but if carbon dioxide emissions could be eliminated entirely, temperatures would quickly stabilize or even decrease over time.

If the human population continues to grow, more pressure will be put on carbon dioxide emissions — leaving future generations vulnerable to the effects of climate change.

The letter notes that «Stable atmospheric concentrations of greenhouse gases would lead to continued warming, but if carbon dioxide emissions could be eliminated entirely, temperatures would quickly stabilize or even decrease over time.

«(B) international offset credits may be sold at a strategic reserve auction under this subsection only if the Administrator determines that it is highly likely that covered entities will, to cover emissions occurring in the year the auction is held, use offset credits to demonstrate compliance under section 722 for emissions equal to or greater than 80 percent of 2 billion tons of carbon dioxide equivalent;

It would be hard to find an ocean expert who does not agree that global carbon dioxide emissions must be brought under control — and quickly — if we are to prevent the wholesale deterioration of our oceans.

«If one of us [reduces our carbon - dioxide emissions], it doesn't make much difference.

Hogbom had, at the time, started to consider carbon dioxide emissions from factories (simple enough if you know, for example, how many tons of coal each factory burns a year).

If human - caused climate change is to be slowed enough to avert the worst consequences of global warming, carbon dioxide emissions from coal - fired power plants and other pollutants will have to be captured and injected deep into the ground to prevent them from being released into the atmosphere.

Because everyone in this global community will be affected by climate change, it will be for our own benefit if we manage to reduce carbon dioxide emissions in such a way that global warming is limited to less than 2 degrees Celsius», says Prof. Ulf Riebesell, marine biologist at GEOMAR Helmholtz Centre for Ocean Research Kiel and coordinator of BIOACID.

The new finding offers a glimpse of what the future might hold for ocean life if society does not drastically curb carbon dioxide emissions.

According to Hans - Otto Pörtner, co-coordinator of BIOACID, marine ecophysiologist at Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research and Co-Chair of the Intergovernmental Panel on Climate Change (IPCC) Working Group II, all countries would need to reduce their carbon dioxide emissions drastically by the middle of this century if they wish to reach the Paris climate targets.

Writing in the Wall Street Journal, the skeptical environmentalist himself, Bj ¯ rn Lomborg, recently revealed a devastating analysis of the EV's real carbon footprint: «If a typical electric car is driven 50,000 miles in its lifetime, the huge initial emissions from its manufacture means the car will actually have put more carbon dioxide in the atmosphere than a similar - size gasoline - powered car driven the same number of miles.»

With carbon dioxide emissions, running costs, prices and kit levels that position it shoulder to shoulder with the likes of the Volkswagen Golf, Vauxhall Astra and Ford Focus, this Civic at last looks as if it has the platform from which to deliver sales results.

The title of the article is: «Even if emissions stop, carbon dioxide could warm Earth for centuries.»

* Scientists from the Carnegie Institution's Department of Global Ecology have calculated that if current carbon dioxide emission trends continue, by mid-century 98 % of present - day reef habitats will be bathed in water too acidic for reef growth.

According to the recent McKinsey report regarding the reduction of carbon dioxide emissions, if I remember it correctly, although these cars are initially more expensive (in terms of purchase price), their greater fuel efficiency results in the fact that owners will actually SAVE money over a time period that makes the whole thing a very GOOD investment.

, makes it crystal clear, in quantified terms, that the emissions of carbon dioxide from burning coal are a major part of the problem and need to be addressed if we are to make the necessary changes to address global warming.

If this 2 degrees Celsius warming is to be avoided, then our net annual emissions of carbon dioxide must be reduced by more than 50 percent within this century.

Our activities are warming the world's atmosphere at such a rate that most of our agriculture will be seriously dislocated over the next few decades — even if we were to get down to business now and start controlling our emissions of carbon dioxide and other greenhouse gases.

If we eliminated emissions of methane and black carbon, but did nothing about carbon dioxide we would have delayed but not significantly reduced long - term threats posed by climate change.

Last week I posted a «Your Dot» contribution from Raymond T. Pierrehumbert, a University of Chicago climate scientist concerned that policy makers and the public keep in mind the primacy of carbon dioxide emissions if they are serious about limiting the chances of propelling disruptive human - driven global warming.

Even if the Princeton wedges of avoided emissions were achievable, that would only stabilize annual emissions, meaning the real heavy lifting — stabilizing the concentration of carbon dioxide in the atmosphere — still lay far ahead.

In the interest of disclosure, I'll mention a few: One occurs if a new energy source puts carbon - based sources «out of business» and displaces them quickly, even without any cost assigned to carbon dioxide emissions: In other words, if the economic cost of the new energy source is so low that it completely and quickly beats even the lowest - cost carbon - based sources (even without a «carbon price») and justifies investments associated with replacing the associated infrastructure.

But it's important to emphasize that if southwest North America moves into a dust bowl by mid-century or later (PNAS Irreversible climate change due to carbon dioxide emissions, http://www.pnas.org/content/early/2009/01/28/0812721106.full.pdf+html), there will be suffering closer to home, even for people on other parts of the continent.

Even if poor and rich countries agree, magically, to meet in the middle — at, say, 10 tons of carbon dioxide per person per year (about Europe's emissions rate)-- that produces a world well on the way to centuries of warming and coastal retreats, even at the low end of estimates of carbon dioxide's heat - trapping power.

Anti-regulatory blogs and commentators and the McCain - Palin campaign made a push to publicize a 10 - month - old comment by Senator Barack Obama about the high cost of coal burning if and when a hard cap is set for carbon dioxide emissions.

1:16 p.m. Updated There's still thinking in many quarters that if the United States acts to restrict its emissions of carbon dioxide, the long - lived greenhouse gas at the heart of the climate challenge, the fast - growing developing countries of the world will voluntarily follow.