Sentences with phrase «warming effect of carbon dioxide»

A 2010 study found that methane, ground - level ozone, and black carbon (i.e., soot) increase the global warming effect of carbon dioxide by 65 percent.

Added methane reduces heat radiation to space, amplifying the warming effect of carbon dioxide produced by burning fossil fuels.

Methane, a greenhouse gas that has 25 times the warming effect of carbon dioxide, must be reduced to 40 - 45 % below 2012 levels by 2025, the government announced.

The warming effect of carbon dioxide is strongest where air is cold and dry, mainly in the arctic rather than in the tropics, mainly in mountainous regions rather than in lowlands, mainly in winter rather than in summer, and mainly at night rather than in daytime.

All of this makes it increasingly clear that the models greatly exaggerate the warming effect of carbon dioxide.

If it wasn't for the warming effect of carbon dioxide, the Earth would've been a frozen iceball throughout much of its history.

IPCC scientists have suspected for a decade that aerosols of smoke and other particles from burning rainforest, crop waste and fossil fuels are blocking sunlight and counteracting the warming effect of carbon dioxide emissions.

It is clear that continuing to rely on fossil fuels will have catastrophic results, because of the dramatic warming effect of carbon dioxide.

These sulphur containing particles reflect sunlight and help form brighter clouds, creating a global effect that temporarily diminishes the warming effects of carbon dioxide.

Because of the climate record is still short, more work needs to be done to determine how much of the warming results from natural climate swings and how much from the warming effects of carbon dioxide released by the burning of fossil fuels, Dr. Steig said.

Satellite observations suggest that GH models ignore negative feedbacks, produced by clouds and by water vapor, that diminish the warming effects of carbon dioxide.»

Not exact matches

Methane gas is second behind carbon dioxide in contributing to the greenhouse effect and global warming; cow flatulence and excretion account for 20 percent, or 100 million tons, of the total annual global methane emissions.

So this effect could either be the result of natural variability in Earth's climate, or yet another effect of carbon dioxide and other greenhouse gases like water vapor trapping more heat and thus warming sea - surface temperatures.

Research at the Rodale Institute found that «organic farming helps combat global warming by capturing atmospheric carbon dioxide and incorporating it into the soil, whereas conventional farming exacerbates the greenhouse effect by producing a net release of carbon into the atmosphere.»

That adjustment would negate the warming effects of 44 gigatons of carbon dioxide, the researchers report in an upcoming issue of Climatic Change.

SAVANNAH, GEORGIA — The glut of humanmade carbon dioxide (CO2) that is spurring global warming may have an unwelcome side effect for hay fever sufferers: It could help ragweed flourish and crowd out other plants, ecologists say.

The researchers found that ocean warming would be an overwhelming stressor that made food webs less efficient, neutralised the «fertilising» effect of elevated carbon dioxide and threw the fragile relationship between predators and prey off balance.

Indeed, the reduction in the emission of precursors to polluting particles (sulphur dioxide) would diminish the concealing effects of Chinese aerosols, and would speed up warming, unless this effect were to be compensated elsewhere, for instance by significantly reducing long - life greenhouse gas emissions and «black carbon.»

In a paper published this month in Geophysical Research Letters, Lovejoy concludes that a natural cooling fluctuation during this period largely masked the warming effects of a continued increase in human - made emissions of carbon dioxide and other greenhouse gases.

Indeed, atmospheric chemists have estimated that the combined warming effect of these trace gases will soon equal or exceed the effect from carbon dioxide.

The cooling effect of a grand minimum is only a fraction of the warming effect caused by the increasing concentration of carbon dioxide in the atmosphere.

The theory of dangerous climate change is based not just on carbon dioxide warming but on positive and negative feedback effects from water vapor and phenomena such as clouds and airborne aerosols from coal burning.

Bond, who led the most comprehensive study to date of black carbon's environmental effects, has found that the pollutant is second only to carbon dioxide in terms of its warming impact.

It's not clear how much of a greenhouse effect that would produce, but it's a good bet that Earth would be a lot warmer — much as it would be, say, if there were no plants drawing carbon dioxide out of the atmosphere.

The coolants are typically greenhouse gases that, if they escape, have a global warming effect hundreds or thousands of times greater than carbon dioxide's.

Natural geochemical processes that result in the slow buildup of atmospheric carbon dioxide may have caused past geologic intervals of global warming through the greenhouse effect

But while the destructive effects of CFCs appear to have been conquered, the global warming almost certainly induced by rising levels of carbon dioxide could tip the balance the other way, says Harris.

The results might not have immediate repercussions — nitrogen trifluoride currently adds 0.04 percent of the global warming effect created by carbon dioxide emitted from sources such as coal - burning power plants and cars.

As it does, it could release tons of additional methane gas, which has 20 times the greenhouse effect of carbon dioxide, possibly increasing the rate of global warming.

7It is particularly ironic that Lomborg would offer such a ridiculously precise estimate of the cost of the impacts of climate change from carbon dioxide emissions, inasmuch as the entire thrust of his books chapter on «global warming» is that practically nothing about the effects of greenhouse gases is known with certainty.

However, a new University of Minnesota study with more than 1,000 young trees has found that plants also adjust — or acclimate — to a warmer climate and may release only one - fifth as much additional carbon dioxide than scientists previously believed, The study, published today in the journal Nature, is based on a five - year project, known as «B4Warmed,» that simulated the effects of climate change on 10 boreal and temperate tree species growing in an open - air setting in 48 plots in two forests in northern Minnesota.

This is expected to have a cooling effect on surface temperatures, which would offset the warming effect of high carbon dioxide concentrations.

Greenhouse effect The warming of Earth's atmosphere due to the buildup of heat - trapping gases, such as carbon dioxide and methane.

The oceans have absorbed approximately one third of human - produced CO2 emissions, dampening the effects of carbon dioxide - driven greenhouse warming.

His research interests include studying the interactions between El Niño / Southern Oscillation (ENSO) and the monsoons of Asia; identifying possible effects on global climate of changing human factors, such as carbon dioxide, as well as natural factors, such as solar variability; and quantifying possible future changes of weather and climate extremes in a warmer climate.

They suggest this «pause» in the acceleration of carbon dioxide concentrations was, in part, due to the effect of the temporary slowdown in global average surface warming during that same period on respiration, the process by which plants and soils release CO2.

In the early 1990s, Palmer also headed a WFA effort to send targeted messages to farmers and legislators, suggesting doubt existed on the effect of carbon dioxide on global warming.

On the other hand, atmospheric carbon dioxide condenses at the cold outer edge of the HZ, which eliminates its greenhouse warming effect.

Since we know that the earth's surface is significantly warmed by geothermal heat, that geothermal heat is variable, that truly titanic forces are at work in the earth's core changing its structure and alignment, and that geothermal heat flux has a much greater influence on surface temperatures than variations in carbon dioxide can possibly have, it makes sense to include its effects in a compendium of global warming discussion parameters.

For his part, Mr. Monckton says there is no need to exploit such events because he and others have exposed fatal weaknesses in the mainstream view that a strong warming effect is due to rising concentrations of carbon dioxide — regardless of the peer - reviewed, Nobel Prize - winning work of the Intergovernmental Panel on Climate Change, the conclusions of various national academies of science and 100 years of growing accord on the basics.

According to Sir Nicholas, «Scientists have been refining their assessment of the probable degree of warming for a given level of carbon dioxide in the atmosphere», and «ranges from 2004 estimates are substantially above those from 2001 — science is telling us that the warming effect is greater than we had previously thought.»

It is to be noted here that there is no necessary contradiction between forecast expectations of (a) some renewed (or continuation of) slight cooling of world climate for a few decades to come, e.g., from volcanic or solar activity variations; (b) an abrupt warming due to the effect of increasing carbon dioxide, lasting some centuries until fossil fuels are exhausted and a while thereafter; and this followed in turn by (c) a glaciation lasting (like the previous ones) for many thousands of years.»

Data from satellite observations «suggest that greenhouse models ignore negative feedback produced by clouds and by water vapor, that diminish the warming effects» of human carbon dioxide emissions.

Rate of percentage annual growth for carbon dioxide has certainly increased since the beginning of the 21st century, but this should result in a significant change in the rate of warming any more quickly than the differences between emission scenarios would, and there (according to the models) the differences aren't significant for the first thirty - some years but progressively become more pronounced from then on — given the cummulative effects of accumulated carbon dioxide.

But because they are released in tiny traces, they currently contribute less than 1 percent of the climate - warming effect from human - generated carbon dioxide.

The climate system is already committed to a certain amount of warming from carbon dioxide emissions of the past, but the worst effects of global warming can still be avoided.

Coral reefs are under stress for several reasons, including warming of the ocean, but especially because of ocean acidification, a direct effect of added carbon dioxide.

Some wonder if this could be the start of an extended period of solar indolence that would more than offset the warming effect of human - made carbon dioxide emissions.

[Some wonder if this could be the start of an extended period of solar indolence that would more than offset the warming effect of human - made carbon dioxide emissions]

There is no question, for course, that the human addition of carbon dioxide is a major climate forcing, both with respect to its warming influence but also its biogeochemical effect.