Sentences with phrase «which atmospheric carbon»

Consider, for example, that Lowe, et al. [in Avoiding Dangerous Climate Change, H.J. Schellnhuber et al. (eds), Cambridge University Press, Cambridge, 2006, p. 32 - 33], based on a «pessimistic, but plausible, scenario in which atmospheric carbon dioxide concentrations were stabilised at four times pre-industrial levels,» estimated that a collapse of the Greenland Ice Sheet would over the next 1,000 years raise sea level by 2.3 meters (with a peak rate of 0.5 mm / yr).

At least 800,000 years: the period leading up to today during which atmospheric carbon dioxide was below current levels.

Not exact matches

One possible strategy for making Mars habitable over the long term is to «terraform» it — manipulate its environment so, in the simplest terms, the planet warms up, ice turns into water, and plants can be introduced, which will convert the atmospheric carbon dioxide into oxygen, with the goal of creating a stable and breathable atmosphere.

Amazonian grasses, sometimes called macrophytes, convert atmospheric carbon to plant biomass, which is then processed by aquatic microorganisms upon decomposition.

Growth rates for concentrations of carbon dioxide have been faster in the past 10 years than over any 10 - year period since continuous atmospheric monitoring began in the 1950s, with concentrations now roughly 35 percent above preindustrial levels (which can be determined from air bubbles trapped in ice cores).

The team says these factors combined to cause a sudden drop in atmospheric carbon dioxide, which would have cooled the planet sufficiently to cause the ice age.

Ocean acidification, which is a direct consequence of increased atmospheric carbon dioxide levels, is expected to have a deleterious effect on many marine species over the next century.

Freshwater such as lakes, though, receive various sources of carbon dioxide from decomposing organic and inorganic matter swept into them, which makes it hard for scientists to distinguish between the direct effects of rising atmospheric CO2 and these other elements.

The event commemorates the 5 November 1965 President's Council of Advisors on Science and Technology (PCAST) report to President Lyndon B. Johnson, which warned that the accumulation of atmospheric carbon dioxide from the burning of fossil fuels would «almost certainly cause significant changes» to the environment.

Researchers believe that the last ice age, which began 40 million years ago, was kicked off by the rise of the Himalayas during the collision of tectonic plates and a corresponding plunge in atmospheric carbon dioxide.

Researchers have a record of atmospheric carbon dioxide stretching back millions of years thanks to ice cores from Antarctica, which contain trapped gas bubbles, snapshots of ancient air.

Because life prefers lighter carbon, the isotopes suggest to some scientists that the atmospheric rise must be due to extra microbial production, and not a boost due to leaked gas from fracking operations, which has a heavier isotopic signature.

Also associated with this event are high levels of carbon dioxide in the atmosphere, which are linked to elevated ocean and atmospheric temperatures.

The climate is warming in the arctic at twice the rate of the rest of the globe creating a longer growing season and increased plant growth, which captures atmospheric carbon, and thawing permafrost, which releases carbon into the atmosphere.

Researchers have found a gene that promotes faster - growing and larger roots, which could lead to plants with a robuster ability to sequester excess atmospheric carbon

Instead of dissipating into space, the infrared radiation that is absorbed by atmospheric water vapor or carbon dioxide produces heating, which in turn makes the earths surface warmer.

These partners are called heterotrophs, since they rely on the anammox bacteria — which are primary producers (or autotrophs), like plants capable of photosynthesis — to turn atmospheric carbon dioxide into organic carbon.

This balance is threatened by increasing atmospheric carbon dioxide, which causes ocean acidification (decreasing ocean pH).

This final number lies below earlier estimates from atmospheric tests and above land - based figures, which did not take into account such carbon sinks as woody debris, forest litter and soil.

The authors said the study underlines the increasing vulnerability of calcified animals to ocean acidification, which occurs as the ocean absorbs more atmospheric carbon emitted through the burning of fossil fuels.

And it finds that, while this winter's unusually strong Arctic Oscillation - which funnels cold northern air to the East Coast and pulls warm mid-latitude air up to the Arctic - is predicted as atmospheric carbon dioxide levels rise, seasonal temperature anomalies associated with it aren't enough to blunt long - term warming trends.

The planet also passed a grim milestone: an atmospheric carbon dioxide concentration of 400 parts per million, including remote Antarctica, which hasn't seen that much CO2 for 4 million years.

Plants convert atmospheric carbon dioxide into energy in the form of sugars, which they can use to fuel any number of vital life processes.

The study argued that changes in the sun's radiation output played a major role in influencing shifts in Arctic air temperatures — a view at odds with mainstream climate science, which fingered atmospheric carbon dioxide as a bigger player.

There is, therefore, much current interest in how coccolithophore calcification might be affected by climate change and ocean acidification, both of which occur as atmospheric carbon dioxide increases.

Iron encourages the bloom of tiny algae called phytoplankton, which take in carbon dioxide (CO2) dissolved in the ocean for photosynthesis; that process in turn draws atmospheric CO2 into the surface waters.

Lowe hypothesizes that rain combined with atmospheric carbon dioxide to make carbonic acid, which weathered jutting mountains of newly formed continental crust.

Such models could help environmental planners cultivate microbial mixes that achieve a desired end — which could be soil that locks up gigatons of atmospheric carbon, or that sloughs off pollution with ease, or that yields the kinds of grapes vintners dream about.

Hi Andrew, Paper you may have, but couldn't find on «The phase relation between atmospheric carbon dioxide and global temperature» CO2 lagging temp change, which really turns the entire AGW argument on its head: http://www.sciencedirect.com/science/article/pii/S0921818112001658 Highlights: ► Changes in global atmospheric CO2 are lagging 11 — 12 months behind changes in global sea surface temperature ► Changes in atmospheric CO2 are not tracking changes in human emissions.

Then atmospheric carbon dioxide concentrations began to rise, which helped the climate to warm a bit faster and somewhat further.

The consensus is that several factors are important: atmospheric composition (the concentrations of carbon dioxide, methane); changes in the Earth's orbit around the Sun known as Milankovitch cycles (and possibly the Sun's orbit around the galaxy); the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on the Earth's surface, which could affect wind and ocean currents; variations in solar output; the orbital dynamics of the Earth - Moon system; and the impact of relatively large meteorites, and volcanism including eruptions of supervolcanoes.

Increased levels of atmospheric carbon dioxide could also significantly alter ocean temperatures and chemistry over the next century, which could lead to increased and more severe mass bleaching and other stressors on coral reefs.

Another is the permafrost reservoir, which is smaller than the active soil pool, but which is similar in size to the atmospheric carbon pool.

In fact, the latest IPCC report makes clear that absent strong and swift action, we are headed toward 1000 ppm atmospheric concentrations of carbon dioxide, which is humanity's self - destruction.

But now, new research shows that we may be able to rely - at least in part - on nature alone, which has its own methods for removing atmospheric carbon.

Indeed, impacts of Arctic warming include the melting of major Arctic glaciers and Greenland (containing the potential for up to 7 meters of sea level rise if it were to melt entirely), the thawing of carbon rich permafrost (which could add to the burden of atmospheric greenhouse gas emissions) and signs of worsening wildfires across the boreal forests of Alaska, to name a few.

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

Insect outbreaks such as this represent an important mechanism by which climate change may undermine the ability of northern forests to take up and store atmospheric carbon, and such impacts should be accounted for in large - scale modelling analyses.

Not to mention the increasingly toxic environment in which we live, breathing atmospheric poisons such as carbon monoxide and sulphur.

Although carbon monoxide is a gas that can be fatal when inhaled, the meat industry insists that it is not harmful to human health when ingested via atmospheric packaging, which utilizes carbon monoxide gas to extend the shelf life and resist spoilage.

The company's primary products are atmospheric gases, which are produced from air (e.g., oxygen and nitrogen) and process gases, which are produced through additional processes (e.g., carbon dioxide, hydrogen, and acetylene).

Alexander Harvey (410)-- There is a small regular oscillation with a period of 3.6 years which shows up in El Nino indicies, temperatures and even the Keeling curve of atmospheric carbon dioxide.

A precursor to the fossil fuel step may be a billion years of algal photosynthesis to build up atmospheric oxygen in which to burn that buried carbon.

They want an instantaneous increase in atmospheric CO2 I suppose, which leads to an instantaneous decrease in pH and hence CaCO3 burial and a somewhat slower change in the carbon isotopes.

There is only one viable way to remove carbon from the atmosphere (over millenia - scale timeframes), which is to covert atmospheric CO2 to a stable solid material, such as charcoal or calcium carbonate, and bury it.

All plants convert atmospheric CO2 into carbon compounds (plant structure) which, if not digested by a grazing animal, will still be converted into methane and CO2 by natural processes.

If it's from the biosphere, then the biosphere got it from the atmosphere in the first place, so it doesn't represent an alteration to the carbon cycle which would increase atmospheric CO2 concentration longterm.

He and eight co-authors have drafted a fresh paper arguing that the world has already shot past a safe eventual atmospheric concentration of carbon dioxide, which they say would be around 350 parts per million, a level passed 20 years ago.

[Response: If the rise in atmospheric CO2 at the end of the last glacial time had come from organic carbon (trees, peat, dissolved organic matter in the ocean) or especially methane (which is even more isotopically «light» than CO2) it would have left an isotopic signature.

Another is the permafrost reservoir, which is smaller than the active soil pool, but which is similar in size to the atmospheric carbon pool.