Sentences with phrase «carbon cycle as»

I suppose the battle - lines here are drawn between on the one - hand those who believe in either significant natural feedbacks impacting the carbon cycle as - we - speak or who believe today's mitigation measures are useless, and on the other - hand those who would welcome some signs of a weakening of the accelerating CO2 - rise as this would encourage more mitigation actions (and less hand - wringing) and who consider CO2 emissions reporting is more than «fluff».

More important, IMHO, is (a) Nurse's assumptions that led him to that question and (b) Nurse's lack of mastery of the carbon cycle as pointed out by Aynsley.

Curiously, the PETM was accompanied by an exceptionally large change to the global carbon cycle as indicated by a large drop in the isotopic ratio of 13C to 12C in the ocean and on land.

Biomass power plants do emit carbon dioxide, a greenhouse gas, but they release no more than what is naturally in the carbon cycle as trees are planted, downed — by man or nature — and replanted.

Within an international model intercomparison project, researchers were able to simulate the complex carbon cycle as well as vegetation dynamics in climate projections for the 21st century.

And why not include it in the carbon cycle as well?

Nonetheless mature forests do play an important role in the global carbon cycle as stable carbon pools, and clearance of forests leads to an increase of atmospheric carbon dioxide levels.

They're putting these tools to use to ask questions not just about ocean ecology, but about the carbon cycle as well.

Not exact matches

The parable of the rivet popper is particularly applicable to the threat of human activity to the cycles of nature such as the nitrogen cycle or the carbon cycle, which are part of the life - support systems of nature.

Over 7,500 new cycle spaces at railway stations and 38 new and improved routes have been agreed, as part of a # 30 million package of developments to connect communities, reduce carbon emissions, get people active and make cycling safer and more convenient.

«Managing the carbon cycle is hard now, but it would be a lot harder without the land plants acting as a big sink.»

In order to get technologies, such as integrated gasification and combined cycle coal power plants with carbon capture and storage, into the economic mainstream, a carbon price is needed.

But the researchers suspect that the creatures» poop, as well as their mucus houses, could transfer microplastics from the water's surface to the depths of the sea (along with nutrients such as carbon that cycle through the environment).

Like bankers do for financial debt, climate scientists assume that the greenhouse gas expense of burning biofuels will be paid back eventually as the crops that make fuel «earn» carbon through sequestering it throughout their life cycle.

The researchers are particularly interested in the carbon cycle, the uptake of CO2 by plants as they grow and the recycling of some of this carbon back into the atmosphere via respiration.

This is because firstly, the micro-organisms that break down dead trees produce copious amounts of CO2, and secondly, there is less vegetation remaining that can remove the greenhouse gas from the air by capturing the carbon in leaves, trunks and roots as part of its growth cycle.

The lack of oxygen will also affect other elemental cycles on the planet, such as nitrogen and carbon.

Unseen by the human eye, plants interact with many species of fungi and other microbes in the surrounding environment, and these exchanges can impact the plant's health and tolerance to stressors such as drought or disease, as well as the global carbon cycle.

«The inclusions also tell us this iron - nickel metal can readily dissolve carbon, sulfur and other elements such as hydrogen, which is hugely important for their cycling and storage over geologic history,» explained Smith.

The cycle is usually thought of as four major reservoirs of carbon interconnected by pathways of exchange.

Alexis Laurent does however highlight carbon footprinting as a useful first step towards a more detailed full life cycle analysis, when you wish to assess sustainability of products or services.

The tropical carbon cycle has become twice as sensitive to temperature variations over the past 50 years, new research has revealed.

But they're also a key part of the carbon cycle: Although wetlands cover only about 3 percent of Earth's surface, they account for as much as 30 percent of soil carbon storage.

Taking factors such as sea surface temperature, greenhouse gases and natural aerosol particles into consideration, the researchers determined that changes in the concentration of black carbon could be the primary driving force behind the observed alterations to the hydrological cycle in the region.

Should we worry more about quantum decryption in the future or the past, how salt's role as a micronutrient may effect the global carbon cycle, and a daily news roundup.

«This work will help increase our understanding of climate change, carbon cycling, and ocean acidification in the Arctic, particularly as it affects marine and fishery science and technology,» added Chen.

The second must - have for life is a recycling of gases and minerals from the planet's interior to its exterior — known as the carbon cycle — which keeps the atmosphere in balance over long periods so life can emerge and survive.

In addition, a supercritical turbine could fit into a directly heated cycle, where a fuel like natural gas burns in the presence of pure oxygen inside the turbine, creating only water and carbon dioxide as waste.

That's because volcanic outgassing helps a planet maintain moderate, life - inviting temperatures, regulating the atmosphere by cycling gases such as carbon dioxide between the atmosphere and the mantle.

Because nitrogen and carbon cycles are tightly coupled, the team's discovery might also alter projections of carbon storage or release from arctic ecosystems as the climate warms.

Our activities, such as fossil fuel burning and deforestation, are pushing the cycle out of its natural balance, adding more and more carbon dioxide to the atmosphere.

«Precise measurement of the solar - induced chlorophyll fluorescence, derived from OCO - 2 — but also from follow - on missions such as the European Sentinel - 5P, which will be launched coincidentally now on October 13th — enables scientists to quantify gross primary production and its contribution to the global carbon cycle,» says Guanter.

As a result of this annual cycle, together with the continual emissions from fossil fuel burning (particularly over China, Europe, and the southeast United States), carbon levels reach a maximum in the Northern Hemisphere in April, just before terrestrial plants begin to soak up more carbon.

But will the world's biological systems absorb more or less carbon dioxide as they cycle it through the atmosphere?

The timing is critical to the research, she says: «We want to be there in July and August, because we're looking at biological activity, carbon cycling, the physics of the system as the ice pulls back.»

«It is true that there are other factors (such as volcanism, the changes in the orbit and the axis of the Earth, the solar cycle), but numerous scientific studies indicate that most of the global warming in recent decades is due to the large concentration of greenhouse gases (carbon dioxide, methane, nitrogen oxide and others) mainly emitted due to human activity.»

An analysis of GOME - 2 data published in April suggests that carbon - cycle models underestimate peak photosynthetic output by as much as 50 — 75 % in parts of India, China and the African Sahel, and by 40 — 60 % in the «corn belt» of the US Midwest, which accounts for more than 40 % of the world's maize (corn) production (L. Guanter et al..

Tiny tree roots may seem like a small thing to be focusing on, but Susan E. Trumbore of the University of California at Irvine and Julia B. Gaudinski of the University of California at Santa Cruz note in an accompanying commentary that «unless we recognize that root behavior is as complex as that of its counterparts above ground, the rules governing allocation of carbon to roots and the role of roots in soil carbon cycling will remain well - kept secrets.»

Humans and other life on Earth are part of this cycle — for instance, we and other species live off nutrients made with carbon, such as sugars, fats and proteins, and also exhale carbon dioxide and emit the gas with our cars and factories.

This study highlights the key role of vegetation in controlling future terrestrial hydrologic response and emphasizes that the continental carbon and water cycles are intimately coupled over land and must be studied as an interconnected system.

A recent trend in GCMs is to extend them to become Earth system models, that include such things as submodels for atmospheric chemistry or a carbon cycle model to better predict changes in carbon dioxide concentrations resulting from changes in emissions.

Assistant Professor of Earth, Ocean and Atmospheric Science Robert Spencer and a team of researchers traveled to Siberia from 2012 to 2015 to better understand how thawing permafrost affected the carbon cycle and specifically to see if the vast amounts of carbon stored in this permafrost were thawing and how it w transferring to the atmosphere as carbon dioxide.

But as Earth has warmed, it has started to thaw, releasing carbon back into the modern carbon cycle and ultimately to the atmosphere, further contributing to warming.

For Arrigo, who has extensively studied carbon cycles, an important implication of higher productivity in polynyas is for their role as carbon sinks.

For this subsystem, many of the longer term feedbacks in the full climate system (such as ice sheets, vegetation response, the carbon cycle) and some of the shorter term bio-geophysical feedbacks (methane, dust and other aerosols) are explicitly excluded.

Methane is a crouching tiger in the carbon cycle, with potentially enough available as hydrates and from peats to really clobber the Earth's heat budget.

Therefore, as long as the overall composition of other Earth - like planets are the similar to ours, we would expect them to sport a carbon cycle (either organic or inorganic), also providing a stable climate for them — as long as the planets remain within the temperature range where the carbon cycle can work.

The ups and downs of the cycle are seen as smaller wiggles in the overall rise of carbon dioxide over the past half - century as

When they sink to the seafloor at the end of their life cycles, they take the carbon from the surface waters with them, provide it as food to organisms at the bottom or store it in deep water layers after decomposition.

«We need to wrap this earth system problem inside an understanding of the human system as well,» said Schimel, describing the human dimension of the carbon cycle questions.