Sentences with phrase «terrestrial carbon dioxide»

CO2 that goes into the atmosphere does not stay there, but continuously recycled by terrestrial plant life and earth's oceans — the great retirement home for most terrestrial carbon dioxide.

A recent NASA study showed that these regions are the biggest terrestrial carbon dioxide sinks on our planet, absorbing 1.4 billion metric tons of CO2 out of a total global terrestrial absorption of 2.5 billion.

«Streams and rivers are not only passive conduits of water and terrestrial carbon dioxide, but also function as reactors that generate and release carbon dioxide during transport downstream,» said Erin Hotchkiss.

This is low - tech terrestrial carbon dioxide removal that could be combined with high - tech carbon storage mechanisms, for example underground.

Not exact matches

Balmy ocean waters are putting the squeeze on phytoplankton, tiny plants that collectively fix as much carbon dioxide as all terrestrial greenery combined.

Similarly, the anoxic ocean at the end of the Permian period (around 250 million years ago) was associated with elevated carbon dioxide and massive terrestrial and oceanic extinctions.

It included graphs that appeared to show a remarkably close correlation between solar activity and terrestrial temperatures — suggesting that other factors, such as carbon dioxide levels, have little influence on global temperatures.

«Geochemical method finds links between terrestrial climate and atmospheric carbon dioxide.»

Beyond wildlife concerns, Canada's boreal forest, which stretches from coast to coast, comprises perhaps the world's largest terrestrial storehouse of carbon dioxide, so it is critical to keep it intact to help mitigate global warming.

«To cause this type of global isotopic shift, you'd have to take all terrestrial plants and burn them into carbon dioxide,» Kessler says, which seems unlikely.

«Even fungi and bacteria have to breathe, and when they do, through the degradation of terrestrial organic carbon, they release carbon dioxide, which makes up about 30 percent of all carbon dioxide released from streams and rivers,» explains Erin Hotchkiss, a researcher at the Department of Ecology and Environmental Science, Umeå University.

They found surprisingly, that human - induced emissions of methane and nitrous oxide from ecosystems overwhelmingly surpass the ability of the land to soak up carbon dioxide emissions, which makes the terrestrial biosphere a contributor to climate change.

The team discovered that the human impact on biogenic methane and nitrous oxide emissions far outweighed the human impact on the terrestrial uptake of carbon dioxide, meaning that humans have caused the terrestrial biosphere to further contribute to warming.

«Of the carbon dioxide human beings put into the atmosphere from the burning of fossil fuels and deforestation,» Berry says, «roughly a third remains in the atmosphere, a third goes into terrestrial ecosystems, and a third goes into the ocean.»

At the moment, these carbon markets only trade in credits for terrestrial ecosystems; for example, keeping a certain amount of forest intact in order to offset a ton of carbon dioxide emitted by burning fossil fuels.

We know that air pollution seriously damages human health and terrestrial ecosystems but this «new» source of soluble iron can potentially increase the amount of carbon dioxide stored in the oceans and, thus, inadvertently offset global warming.»

New research suggests that the capacity of the terrestrial biosphere to absorb carbon dioxide (CO2) may have been underestimated in past calculations due to certain land - use changes not being fully taken into account.

It has sometimes been argued that the earth's biosphere (in large part, the terrestrial biosphere) may have the capacity to sequestor much of the increased carbon dioxide (CO2) in the atmosphere associated with human fossil fuel burning.

«Breathing» of the terrestrial biosphere: lessons learned from a global network of carbon dioxide flux measurement systems.

The coastal ecosystems of mangroves, seagrass meadows and tidal marshes mitigate climate change by sequestering carbon dioxide (CO2) from the atmosphere and oceans at significantly higher rates, per unit area, than terrestrial forests (Figure 1).

Other possibilities are the decomposition of organic matter in terrestrial settings, or the release of methane and carbon dioxide from deeply buried rocks during volcanic events.

This is because while carbon dioxide permits much of the incoming solar radiation (visible light) to reach the earth, it traps outgoing terrestrial (or infrared) radiation, slowing down the cooling of the earth's surface.

Permafrost modeling studies typically indicate a potential release of in the neighborhood ~ 200 PgC as carbon dioxide equivalent by 2100, though poorly constrained, but comparable to other biogeochemical and climate - ecosystem related feedbacks, such as the additional CO2 released by the warming of terrestrial soils.

Soils are the largest single terrestrial source of carbon dioxide (CO2), but these emissions are highly sensitive to a range of factors associated with climate change and human land use (1).

FACE is a method and infrastructure used to experimentally enrich the atmosphere enveloping portions of a terrestrial ecosystem with controlled amounts of carbon dioxide (and in some cases, other gases), without using chambers or walls.

And because these floating plants absorb as much of the atmosphere's carbon dioxide - a major greenhouse gas - as do terrestrial plants, they are important to any global climate study.

Even a small increase in soil carbon could have a big impact on carbon dioxide pollution levels, particularly in rangelands, which span a quarter of the earth's land surface and store about a third of all terrestrial soil carbon.

«This record is the first evidence that carbon dioxide may be linked with environmental changes, such as changes in the terrestrial ecosystem, distribution of ice, sea level and monsoon intensity.»

In other words, if all of the terrestrial carbon today (in forests, animals, soils, etc.) were converted to carbon dioxide and returned to the global inorganic carbon pool, the change in the global carbon isotopic ratio would only be a third as big as that observed during the PETM!

First, the flooding of large stocks of terrestrial organic matter may fuel microbial decomposition, converting the organic matter stored in above and below ground biomass to carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).

This created a qualitative transformation in Homo sapiens» impact on earth system trends: levels of carbon dioxide, nitrous oxide, methane, stratospheric ozone, surface ocean temperature, ocean acidification, marine fish capture, coastal nitrogen, tropical forest depletion, land domestication and terrestrial biosphere degradation.

Terrestrial plants thrive on carbon dioxide, while hydrogen sulfide kills them.

Destroying aquatic and marine vegetative cover not only releases larges stores of carbon dioxide (CO2) but decimates the habitat provisions for multiple species across the terrestrial and aquatic interface.

Professor Denning's research interests include interactions between the atmosphere and terrestrial biosphere and their effects on exchange of energy, water, and carbon dioxide.

Thawing permafrost also delivers organic - rich soils to lake bottoms, where decomposition in the absence of oxygen releases additional methane.116 Extensive wildfires also release carbon that contributes to climate warming.107, 117,118 The capacity of the Yukon River Basin in Alaska and adjacent Canada to store carbon has been substantially weakened since the 1960s by the combination of warming and thawing of permafrost and by increased wildfire.119 Expansion of tall shrubs and trees into tundra makes the surface darker and rougher, increasing absorption of the sun's energy and further contributing to warming.120 This warming is likely stronger than the potential cooling effects of increased carbon dioxide uptake associated with tree and shrub expansion.121 The shorter snow - covered seasons in Alaska further increase energy absorption by the land surface, an effect only slightly offset by the reduced energy absorption of highly reflective post-fire snow - covered landscapes.121 This spectrum of changes in Alaskan and other high - latitude terrestrial ecosystems jeopardizes efforts by society to use ecosystem carbon management to offset fossil fuel emissions.94, 95,96

The 180 billion tonnes of carbon lost from terrestrial systems is equal to 660 billion tonnes of carbon dioxide that may be removed from the atmosphere.

For example, The impact of Miocene atmospheric carbon dioxide fluctuations on climate and the evolution of terrestrial ecosystems by Wolfram M. Kurschner, Zlatko Kvacek, and David L. Dilcher, PNAS January 15, 2008 vol.

Finally, absent from Broecker's analysis is a consideration of the implications of seeking to store up to 34 billion tons of carbon dioxide annually in terrestrial or ocean - based facilities, including the imposing environmental and health risks associated with potential leakage, and the huge «NIMBY» battles that may ensue in areas where such facilities might be sited.

Carbon cycle - The term used to describe the flow of carbon (in various forms, e.g., as > carbon dioxide) through the atmosphere, ocean, terrestrial biosphere and lithosphere..

Reducing atmospheric carbon dioxide concentrations by way of large - scale enhancement of terrestrial carbon sinks is one climate engineering strategy that requires comprehensive scrutiny given its complexity, say Thomas O'Halloran and Ryan Bright

Impacts of large - scale and persistent changes in the MOC are likely to include changes to marine ecosystem productivity, fisheries, ocean carbon dioxide uptake, oceanic oxygen concentrations and terrestrial vegetation [Working Group I Fourth Assessment 10.3, 10.7; Working Group II Fourth Assessment 12.6, 19.3].

«Soil respiration, RS, the flux of microbially and plant - respired carbon dioxide (CO2) from the soil surface to the atmosphere, is the second - largest terrestrial carbon flux.

Randerson, J.T., M.V. Thompson, T.J. Conway, I.Y. Fung, and C.B. Field, 1997: The contribution of terrestrial sources and sinks to trends in the seasonal cycle of atmospheric carbon dioxide.

The first of these concerns the terrestrial and oceanic processes that release greenhouse gases into the atmosphere and then absorb them, and the second is a calculation about what a change in carbon dioxide levels really means for average global temperatures.

Eliminate carbon dioxide, and terrestrial plants would die, as would lake and ocean phytoplankton, grasses, kelp and other water plants.

Oceanic methane releases could account for the magnitude of C - 12, while terrestrial sources seem unlikely: «To cause this type of global isotopic shift, you'd have to take all terrestrial plants and burn them into carbon dioxide,» Kessler says in the June 11 edition of Science.

Because the oceans and terrestrial biosphere take up only roughly 55 % of these emissions (Ballantyne et al. 2012), atmospheric carbon dioxide (CO2) concentrations are growing at roughly 2 ppm y − 1 (NOAA 2012).

Then note that even at current levels of CO2, we are back to Miocene conditions, The impact of Miocene atmospheric carbon dioxide fluctuations on climate and the evolution of terrestrial ecosystems Wolfram M. Kürschner, Zlatko Kvaček, and David L. Dilcher http://www.pnas.org/content/105/2/449.long with sea highstands ~ 60 meters above current sea levels.

Developed by Jain and his graduate students, the model includes complex physical and chemical interactions among carbon - dioxide emissions, climate change, and carbon - dioxide uptake by oceans and terrestrial ecosystems.

The assumption has always been that the most important terrestrial consumers of carbon dioxide were the tropical rainforests.