Sentences with phrase «by carbon dioxide released»

Most scientists believe global warming is mainly caused by carbon dioxide released into the atmosphere through the combustion of fossil fuels.

Fact: The amount of carbon dioxide released by natural sources is far greater than that released by humans Fact: The carbon dioxide released by naturals sources is almost exactly matched by carbon dioxide released by natural sinks Fact: For the most part the sinks and sources are not directly «linked» Therefore there must be negative feedback on carbon dioxide in order for sinks and sources to be matched.

A sudden global warming 55 million years ago might have been fueled by carbon dioxide released from permafrost, as happened in Alaskan fires in 2007.

In a modeling study of coal, oil, and natural gas, Zhang and Caldeira compared the warming caused by combustion to the warming caused by the carbon dioxide released by a single instance of burning, such as one lump of coal, and by a power plant that is continuously burning fuel.

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.

«The findings showed no mineralogical evidence for abundant liquid water or its by - products, thus pointing to mechanisms other than the flow of water — such as the freeze and thaw of carbon dioxide frost — as being the major drivers of recent gully evolution,» the team explained in the press release.

Industrialized countries with less than a quarter of the world's population are responsible for about three - quarters of the carbon dioxide released by burning fossil fuels.

Bluetongue Brewery's water recovery is subjected to GWE's state - of - the - art anaerobic treatment that significantly reduces the brewery's carbon footprint by avoiding the release of carbon dioxide into the atmosphere, say Mr Bambridge and GWE CEO Jean Pierre Ombregt.

Wolfe, who is the Vice-Chairman of the Legislature and the chair of the Environmental Committee, also noted that the operation of high - efficiency appliances does help to reduce the level of carbon dioxide (CO2) that is released by the US power grid annually.

A federal report released in November 2016 laid out a strategy for the United States to «deeply decarbonize» its economy by 2050, and said that developing carbon dioxide removal techniques «may be necessary in the long run to constrain global average temperature increases to well below 2 °C.»

Therefore, the Amazon recycles the CO2 from its own river system, and not that fixed by the tropical forest, releasing as much carbon dioxide into the atmosphere as it absorbs.

Conversely, climate policy that results in little or no effort to control greenhouse gases like carbon dioxide would likely result in a substantial release of carbon from the permafrost region by 2300, the study found.

They found that the carbon dioxide - caused warming exceeds the amount of heat released by a lump of coal in just 34 days.

A porous material invented by the Rice lab of chemist James Tour sequesters carbon dioxide, a greenhouse gas, at ambient temperature with pressure provided by the wellhead and lets it go once the pressure is released.

That's of particular interest to scientists studying global warming, because in those waters much of the carbon that's being released from melting permafrost is oxidized by bacteria into carbon dioxide, says Rose Cory, an environmental scientist at the University of North Carolina, Chapel Hill.

Laborious research in the 1960s by the late pioneering U.S. ecologist Eugene Odum seemed to indicate that forests achieve a balance between the amount of carbon dioxide (CO2) absorbed by growing trees and plants and the amount of CO2 released back into the atmosphere by the decomposition of dead plant matter.

This indicates that soils will typically respond strongly to increasing temperature by releasing more carbon dioxide, said Jianwu Tang with the Marine Biological Laboratory Ecosystems Center and a lead scientist on the study.

The hot flood basalts would have released huge amounts of sulfur and carbon dioxide, potentially causing a quick global chill followed by a longer period of global warming.

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.»

By releasing carbon dioxide higher in the atmosphere, airplanes allow the molecule more time to trap heat, also contributing via contrails and other chemically active gases, the IPCC notes.

If damaged, they would stop capturing carbon dioxide and a large amount of it could be released into the atmosphere by decomposing vegetation

By retaining carbon in the soil, no - till farming also reduces the amount of carbon dioxide released into the atmosphere.

As a result — and for reasons that remain unexplained — the waters of the Southern Ocean may have begun to release carbon dioxide, enough to raise concentrations in the atmosphere by more than 100 parts per million over millennia — roughly equivalent to the rise in the last 200 years.

The research team has estimated how much of the carbon dioxide is released by respiration, from the smallest creeks to the Mississippi River in the continental United States.

Some scientists think that carbon dioxide released by the impact would have acidified the oceans, contributing to the extinctions, so the drill team will look at whether seafloor animals just after the impact were species that tolerate low pH.

Food production accounts for a third of all greenhouse gas emissions when one tallies those from fossil fuels used in growing, preparing and transporting food; the carbon dioxide released by clearing land for farming and pastures; the methane from rice paddies and ruminant livestock; and the nitrous oxide from fertilizer use.

Energy - related carbon dioxide emissions from developing countries will be 127 percent higher than in the world's most developed economies by 2040, according to figures released Thursday by the U.S.

They used these factors to derive a simple model for resulting temperature change caused by the carbon dioxide and methane released by a particular plant.

In July researchers from the National Oceanic and Atmospheric Administration published findings that the oceans store almost half the anthropogenic carbon dioxide — the CO2 produced by humans — released into the atmosphere.

«Mosquitoes find their victims by sensing the carbon dioxide released from breath, body temperature and sweat.

There have been several attempts to capture the carbon dioxide released by the world's 7000 - plus coal - fired plants.

(The ocean currently absorbs roughly half of the greenhouse gases, primarily carbon dioxide, that are released by human activity.)

«I agree that carbon dioxide is a greenhouse gas, that greenhouse gas concentrations in the atmosphere are increasing as a result of human activities — primarily burning coal, oil, and natural gas — and that this means the global mean temperature is likely to rise,» Ebell said in the statement released by CEI yesterday.

In climate change scenarios simulated by the model GOTILWA + — within the Consolider - Ingenio project Montes and the research project Med - Forestream — , net primary productivity of Spanish forests (how much carbon dioxide plants take in during photosynthesis minus how much carbon dioxide they release during respiration) will decrease from the second half of this century.

It produces no carbon dioxide exhaust emissions, and even when the CO2 released in generating the electricity used to charge its batteries is factored in, it is responsible for less than half the amount emitted by the «greenest» petrol cars.

A study of one hydroelectric reservoir, Cedar Lake in Manitoba, revealed a likely release of about one kilogram of carbon dioxide for every kilowatt - hour of electricity produced by the reservoir's power station.

BURNING UP The heat radiated by burning fossil fuels such as natural gas, shown, is overshadowed within months by the greenhouse gas effect of the released carbon dioxide, new research shows.

Fake paper fools global warming naysayers The man - made - global - warming - is - a-hoax crowd latched onto a study this week in the Journal of Geoclimatic Studies by researchers at the University of Arizona's Department of Climatology, who reported that soil bacteria around the Atlantic and Pacific oceans belch more than 300 times the carbon dioxide released by all fossil fuel emission, strongly implying that humans are not to blame for climate change.

Every molecule of methane in the air has 25 times the effect on temperature rise compared to a molecule of carbon dioxide released into the atmosphere by burning coal, oil or gas.

That year the U.S. released 7.40 billion metric tons of carbon dioxide equivalent (CO2e), a measure of the global warming potential of any greenhouse gas in terms of the amount of warming generated by CO2.

On such planets, the carbon dioxide released by volcanoes might be enough to pull the trigger.

This effect is caused by increased levels of carbon dioxide, chlorofluorocarbons and other gases in the air, many of them released by human activity.

The U.S. government should tweak its approach for estimating the financial impacts of carbon dioxide (CO2) pollution, which it uses in drafting new regulations, according to a report released today by the U.S. National Academies of Sciences, Engineering, and Medicine (NAS).

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.

The shell pieces suggest that carbon dioxide released by the Deccan eruptions made the oceans too acidic for some creatures, says Thierry Adatte.

As a gigantic carbon sink, the ocean has taken up about a third of the carbon dioxide released into the atmosphere by human activities.

When storms, fires, or other disturbances kill a great number of trees, the dead biomass is decomposed by fungi, insects, and the like, releasing carbon dioxide into the atmosphere.

Some experts are testing how well devices can capture the carbon dioxide normally released by electric - power plants.

A molecule containing three oxygen atoms, computer models suggest that ozone on Venus is formed when sunlight breaks up carbon dioxide molecules and releases oxygen atoms, which are swept around to the planet's nightside by winds where they can then combine to form unstable, three - atom ozone molecules, as well as much more stable, two - atom molecules essential for animals.

The Finnish Meteorological Institute has participated in research to estimate, based on climate model results and measurements, the maximum amount of carbon dioxide that can be released into the atmosphere without passing the climate warming limits set by the Paris Climate Agreement.