Sentences with phrase «from fossil fuel combustion»

Human activities, particularly CO2 emissions from fossil fuel combustion, have driven atmospheric greenhouse gas (GHG) concentration levels higher than at any time in at least 800,000 years.

That's the rate that people are releasing carbon to the atmosphere from fossil fuel combustion and deforestation today.

They are emitted from fossil fuel combustion and a range of industrial and agricultural processes.

If greenhouse gas emissions from fossil fuel combustion continue at the present rate, by 2100 the melting may surpass the levels associated with collapse of the shelves.

A very small amount of CO2 (roughly 1 % of the emission rate from fossil fuel combustion) is also emitted in volcanic eruptions.

Reducing greenhouse gas emissions from fossil fuel combustion is a top priority for climate and energy policies.

Energy efficiency doesn't just protect indoor health; it cleans outside air by reducing pollution from fossil fuel combustion.

From 2012 to 2013, CO2 emissions from fossil fuel combustion increased by 2.6 % due to: (1) the weather — heating degree days increased 18.5 % in 2013 compared to 2012.

Addressing the atmospheric concentrations of GHGs, Saudi Arabia cautioned against «giving policy makers the message that CO2 drives global warming» and further highlighted that not all CO2 emissions result from fossil fuel combustion.

In summary, the ocean methane hydrate pool has strong potential to amplify the human CO2 release from fossil fuel combustion over times scales of decades to centuries.

Those reductions in pollution mean big gains for health, as pollutants from fossil fuel combustion contribute to four of the leading causes of death in the United States: cancer,...

«The fundamental way to minimize the risk of Amazon dieback is to control greenhouse gas emissions globally, particularly from fossil fuel combustion in the developed world and Asia,» said Yadvinder Malhi, the lead author from Oxford University.

The backcloth to California's climate — the overall annual precipitation — may not change greatly as the world, and the US with it, warms as a consequence of greenhouse gas emissions from fossil fuel combustion on a global scale.

Heat - trapping greenhouse gases originating mainly from fossil fuel combustion are responsible for the steadily rising global temperature, the melting of glaciers and ice caps, the expansion of the ocean and rise in sea level, the increase in droughts and subsequent problems of climate refugees, and the increase in violent storms.

From 2010 to 2011, CO2 emissions from fossil fuel combustion decreased by 2.5 % due to: (1) a decrease in coal consumption, with increased natural gas consumption and a significant increase in hydropower used; (2) a decrease in transportation - related energy consumption due to higher fuel costs, improvements in fuel efficiency, and a reduction in miles travelled; and (3) relatively mild winter conditions resulting in an overall decrease in energy demand in most sectors.

Primarily, CO2 emissions come from fossil fuel combustion with a lesser contribution from land use changes.

It's in the air from fossil fuel combustion and in groundwater where water has come in contact with coal or pyrite seams.

Aerosols are both natural and man - made, and include windblown desert dust, sea salt, smoke from fires, sulfurous particles from volcanic eruptions, and particles from fossil fuel combustion.

For a long time, scientists and economists have hoped to avoid a situation in which the world CO2 emissions [from fossil fuel combustion and deforestation] passes 10 billion metric tons of carbon a year.

In 2013, Dr Williams warned that flight paths were likely to become bumpier as carbon dioxide emissions from fossil fuel combustion gathered in the atmosphere and raised global temperatures.

By the end of this century, a roughly 3 °F to 5 °F rise is projected under a lower emissions scenario, which would require substantial reductions in emissions (referred to as the «B1 scenario»), and a 5 °F to 10 °F rise for a higher emissions scenario assuming continued increases in emissions, predominantly from fossil fuel combustion (referred to as the «A2 scenario»).

If each such unit were to capture one ton of carbon dioxide per day, then Broecker estimates that 100 million units would be required to capture the 32 billion tons of carbon dioxide produced annually from fossil fuel combustion.

Some of it was clearly preserved from living things on the ice itself, some of was scraped up as the glaciers moved over old soils, and some of it was soot from fossil fuel combustion or distant forest fires.

The NAS National Research Council calculates that the health costs from fossil fuel combustion are in the billions: «WASHINGTON — A new report from the National Research Council examines and, when possible, estimates «hidden» costs of energy production and use — such as the damage air pollution imposes on human health — that are not reflected in market prices of coal, oil, other energy sources, or the electricity and gasoline produced from them.

Sulphur emissions from fossil fuel combustion lead to the formation of aerosols that affect regional climate and precipitation patterns and also reduce radiative forcing.

In this case the computed forcings incorporate the effects of other aerosol types which have a similar spatial distribution to sulphate aerosols, such as nitrate aerosols or carbonaceous aerosols from fossil fuel combustion.

Human emissions of reactive sulfur and nitrogen, derived from fossil fuel combustion and agriculture, have led to increased deposition of strong acids (HNO3 and H2SO4) and bases (NH3) to the ocean, hence affecting seawater pH (Doney et al. 2007).

Contrary to what Peter Taylor says in his book, it is well known that sulphate aerosols created in the atmosphere from fossil fuel combustion were a major influence on the small cooling trend from 1940, although uncertainties remain over the scale of the effect.

The tree could be regarded as low - technology carbon removal machinery and, in theory, carefully managed plantations could soak up the carbon released from fossil fuel combustion.

It is also true that a Trump Administration will be able to repeal existing rules regulating pollution from fossil fuel combustion — including the GHG emissions rules under the Clean Power Plan — without the need for congressional approval.

Real pollutants from fossil fuel combustion, such as oxides of sulfur, nitrogen and fly ash, are rightly controlled, and by cost - effective technology.

As stated by the Intergovernmental Panel on Climate Change (IPCC), the largest contributor to global warming is the increase in atmospheric carbon dioxide (CO2) since 1750, particularly from fossil fuel combustion, cement production, and land use changes such as deforestation.

The backcloth to California's climate — the overall annual precipitation — may not change greatly as the world, and the U.S. with it, warms as a consequence of greenhouse gas emissions from fossil fuel combustion on a global scale.

Air pollution, mainly from fossil fuel combustion, is discoloring the building's white marble.

JeffN, And what they did say: «They (GHG's) are emitted from fossil fuel combustion and a range of industrial and agricultural processes.»

PNNL and collaborators are hunting for materials to trap the pollutant carbon dioxide before it's released from fossil fuel combustion in industry and vehicles.

Human influences on the climate (largely the accumulation of CO2 from fossil fuel combustion) are a physically small (1 %) effect on a complex, chaotic, multicomponent and multiscale system.

Global carbon dioxide emissions from fossil fuel combustion and cement production grew 2.3 per cent to a record high of 36.1 billion tonnes CO2 in 2013.