Sentences with phrase «release of carbon»

This mass extinction has long been linked to a large and abrupt release of carbon dioxide into the atmosphere, but the exact source of this emission has been unknown.

A new study documents evidence of a massive release of carbon from permafrost as temperatures rose at the end of the last glacial period.

The degradation of one third of the world's soils has already prompted an enormous release of carbon into the atmosphere.

But the idea is not inherently good for limiting releases of carbon dioxide.

A deforestation event today leads to a time - delayed future release of carbon, from the eventual decay either of forest products or of slash left at the site [2].

Current releases of the carbon contained in carbon dioxide total about 10 billion tons per year.

Global vegetation fire emissions typically constitute a third of total releases of carbon dioxide, the main heat - trapping emission, annually (1).

I think there's a significant likelihood of a kind of a runaway release of carbon and methane from permafrost, and from huge offshore deposits of methane all around the world.

They can burn away soils as well and threaten permafrost, frozen soil beneath the ground, and so potentially help to trigger additional release of carbon to the atmosphere.

Warming oceans slowly released some of the carbon dioxide stored in their waters.

Global warming is one of the biggest problem that we face today, It is cause by too much release of carbon dioxide.

But the carbon bumps in Africa and South America were attributable to El Niño, the researchers report: In Africa, higher temperatures drove the larger release of carbon by increasing the rate of plant respiration.

A new study is shedding light on what that could mean for the future by providing the first direct physical evidence of a massive release of carbon from permafrost during a warming spike at the end of the last glacial period.

Changes in disturbance regimes (e.g., increased fire frequency or tree mortality from insects) could also result in release of carbon currently stored in forests (Baldocchi 2008; Kurz et al. 2008; Loehman et al. 2014).

Biofuels can also cause a much smaller net release of carbon dioxide into the atmosphere than fossil fuels such as coal and oil.

They should be asked directly such questions as (1) Are they now saying that high levels of climate sensitivity are not possible, or (2) Are they now saying that some of the climate surprises including more rapid releases of carbon from the stored carbon are not possible.

For the maize ethanol there is a large release of carbon dioxide initially, when forests and pastures are converted to grow replacement food (food that would have been grown where the new biofuel crop is growing).

-- Increasing release of carbon stored in soils and permafrost and methane from seabed methane hydrates

The description of Stage 2: Very rapid and massive release of carbon deficient in ∂ 13C, does put one in mind of the Methane Gun hypothesis.

The three main sections describe planned regulations, rules and standards aimed at cutting releases of carbon dioxide and other greenhouse gases from power plants, heavy vehicles and buildings; a suite of new steps to cut vulnerability to climate and coastal hazards; and a fresh summary of international initiatives the administration plans to pursue with other countries.

An unknown portion of this material will become available for microbial processing in the future, which may result in enhanced release of carbon dioxide, methane, and nitrous oxide.

Natural releases of carbon dioxide from the Southern Ocean due to shifting wind patterns could have amplified global warming...

At the request of President Carter's Executive Office, the National Academy of Sciences convened the Climate Research Board to assess the scientific basis for «future climatic changes resulting from man - made releases of carbon dioxide into the atmosphere.»

Evidence for a rapid release of carbon at the Paleocene - Eocene thermal maximum.

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.

Hansen has studied other effects of seasonal carbon - dioxide ice on Mars, such as spider - shaped features that result from explosive release of carbon - dioxide gas trapped beneath a sheet of dry ice as the underside of the sheet thaws in spring.

Stronger, longer - lasting modern concrete, made with less fuel and less release of carbon into the atmosphere, may be the legacy of a deeper understanding of how the Romans made their incomparable concrete.

Broadly speaking, land - use related emissions of greenhouse gases are a large contributor to our annual release of carbon to the atmosphere.

That's why SOFCs can be tallied as green technology, even if their use of hydrocarbon fuels entails releases of carbon dioxide.

Climatologists have long feared an Arctic «time bomb» — a sudden release of carbon dioxide from thawing permafrost soils that would trigger runaway warming.

The advent of the internal - combustion engine sparked a major release of carbon dioxide into the atmosphere that has warmed the Earth.

Their results indicate that volcanic releases of both carbon dioxide (CO2) and sulfur dioxide (SO2) could have created highly acidic rain, potentially leaching the soil of nutrients and damaging plants and other vulnerable terrestrial organisms.

Almost 56 million years ago, a mysterious release of carbon into our atmosphere caused temperatures on Earth to rise between 5 and 9 degrees Centigrade over the course of a few thousand years.

There's typically an initial ocean uptake as tropical East Pacific upwelling (CO2 degassing) is reduced, followed by a stronger release of carbon from land.

This net release of carbon consists of losses of 861.7 ± 80.2 Tg C yr — 1 and gains of 436.5 ± 31.0 Tg C yr — 1.

This study provides new evidence that the contemporary release of carbon dioxide and other greenhouse gases could have a profound impact on climate in Africa.

Precisely when CO2 is released within this timeframe is largely irrelevant to the outcome, but very relevant to the problem in that the continued release of carbon over time, even at much lower levels than today, eventually leads to an accumulation with the same 2 °C or higher outcome (the slow running tap into the bathtub problem).

There is then a steady release of carbon dioxide (60 g MJ of energy) during the years of production.

«Today, we build on that progress by proposing common - sense standards that will begin to put an end to the limitless release of carbon pollution from our power plants, creating cleaner air and a healthier environment for our children and for future generations,» Mr. Obama said in a statement.

«As a result, the loss of glacier mass worldwide, along with the corresponding release of carbon, will affect high latitude marine ecosystems, particularly those surrounding the major ice sheets that now receive fairly limited land - to - ocean fluxes of carbon.»

Vegetation can act as both a source and a sink for carbon, through uptake of carbon via photosynthesis and release of carbon through respiration.

The political turbulence always seems to intensify when there is momentum toward actions to limit smokestack and tailpipe releases of carbon dioxide, the main heat - trapping greenhouse gas, which most experts link to rising temperatures.

Recent research has focussed on exposing the dynamics of carbon cycling across rapid climatic warming events within the Eocene extreme «greenhouse», where he has offered an alternative explanation for their genesis compared to prevailing views that invoked repeated releases of carbon from buried sedimentary reservoirs.