Sentences with phrase «using atmospheric carbon»

Let us recognize this and bind ourselves to using atmospheric carbon dioxide as the carbon feedstock for our jet fuel as a matter of law.

Bigger root systems mean more climate - warming carbon could essentially be buried, because plants build their roots using atmospheric carbon.

When it comes to climate change science, researchers typically use atmospheric carbon dioxide levels from the late 19th century as a guideline, because that's when instrumentation was developed to accurately measure temperatures.

We use atmospheric carbon dioxide concentration as a single, simple indicator to track the progression of the Anthropocene.

Not exact matches

The Initiative is based on the finding that «4 ‰» annual growth rate of the soil carbon stock would make it possible to stop the present increase in atmospheric CO2 and aims to use a range of agricultural systems to sequester CO2 and store it in the ground as soil organic carbon (SOC).

A substantial portion of the planet is greening in response to increasing atmospheric carbon dioxide, nitrogen deposition, global warming and land use change.

«They are using this information to test state - of - the - art climate models under conditions of high atmospheric carbon dioxide concentrations, similar to those expected by the end of this century.»

«There is a danger in believing that land carbon sinks can solve the problem of atmospheric carbon emissions because this legitimises the ongoing use of fossil fuels,» Professor Mackey said.

There's also interest in using metal catalysts to convert carbon dioxide into fuels, make fertilizers from atmospheric nitrogen and drive reactions in fuel - cell cars.

Today in Nano Letters, the group presents a process that turns atmospheric CO2 into carbon nanofibers similar to valuable materials used in industries such as aerospace, construction, and electronics.

Warmer temperatures could extend the growing season in northern latitudes, and an increase in atmospheric carbon dioxide could improve the water use efficiency of some crops.

Undertaken by University of Adelaide in collaboration with CSIRO, the research could make viable a process that has enormous potential to replace fossil fuels and continue to use existing carbon - based fuel technologies without increasing atmospheric CO2.

The second simulation overlaid that same weather data with a «pseudo global warming» technique using an accepted scenario that assumes a 2 - to 3 - degree increase in average temperature, and a doubling of atmospheric carbon dioxide.

To test his idea, Salzmann used a computer model of the Earth system to find out how the climate would react to a doubling of the atmospheric carbon - dioxide concentration.

Doherty and her colleagues used a compilation of dozens of climate models to look at the life span of atmospheric black carbon.

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

Activated carbon is the most common adsorbent used to reduce both atmospheric and wastewater pollution — but is expensive to produce and regenerate.

Columbia University physicist Peter Eisenberger created an effective model that proves, through real world testing, that carbon sequestration can be used on a global scale and can prevent the atmospheric levels of carbon dioxide from ever exceeding 450 ppm, below dangerous levels.

Using specially developed model configurations, the team studies how Arctic whitening would be expected to play out in a world with four times the preindustrial amount of atmospheric carbon dioxide, and an Arctic that is about 10 degrees Celsius hotter (18 degrees Fahrenheit).

They have also developed a technique for using Q - carbon to make diamond - related structures at room temperature and at ambient atmospheric pressure in air.

It concluded that atmospheric carbon dioxide concentrations had already increased by about 25 percent in the past century, and continued use of fossil fuels would lead to substantial temperature increases in the future.

Model simulations of 20th century global warming typically use actual observed amounts of atmospheric carbon dioxide, together with other human (for example chloroflorocarbons or CFCs) and natural (solar brightness variations, volcanic eruptions,...) climate - forcing factors.

Microbes can also generate nitrogen by taking carbon and using it fix atmospheric nitrogen into ammonia.

Dargaville, R.J., et al., 2002: Evaluation of terrestrial carbon cycle models with atmospheric CO2 measurements: Results from transient simulations considering increasing CO2, climate, and land - use effects.

The definition uses atmospheric databases called HITRAN (high - resolution transmission molecular absorption) and HITEMP (high - temperature spectroscopic absorption parameters) that characterize planetary atmospheres in light of how both carbon dioxide and water are absorbed.

«The potential for biochar to permanently sequester atmospheric carbon is on the order of a billion tons per year, if sustainable practices are used,» said Amonette.

Empirical data for the CO2 «airborne fraction», the ratio of observed atmospheric CO2 increase divided by fossil fuel CO2 emissions, show that almost half of the emissions is being taken up by surface (terrestrial and ocean) carbon reservoirs [187], despite a substantial but poorly measured contribution of anthropogenic land use (deforestation and agriculture) to airborne CO2 [179], [216].

Using our carbon cycle model we calculate that if we extract 100 ppm of CO2 from the air over the period 2030 — 2100 (10/7 ppm per year), say storing that CO2 in carbonate bricks, the atmospheric CO2 amount in 2100 will be reduced 52 ppm to 358 ppm, i.e., the reduction of airborne CO2 is about half of the amount extracted from the air and stored.

Students compare the carbon sequestration potential for land - use types in their state, compare this to the amount of carbon released by human activities, and then discuss forests» ability to sequester atmospheric carbon.

The authors state: «In this paper, we have used several basic atmospheric — physics models to show that additional carbon dioxide will warm the surface of Earth.

# 1, Steve: The language that most people use to describe the average annual increase in atmospheric carbon is confusing.

Since carbon cycle models allow us to understand past changes in atmospheric CO2 and 13C concentrations it is also possible to use these models to infer the 14C production rate based on measured 14C concentrations in tree rings.

The fundamental flaw in the article is in inducing the reader to believe that it would require tripling the gross vegetative uptake of the entire planet to offset the net carbon atmospheric increase, while using figures for the net vegetative uptake and the gross emissions.

By using dual radioactive tracers with differing lifetimes, Wilson et al. [2017] found short term increases in CH4 and CO2 release during periods of thaw in a discontinuous permafrost were generally offset by long - term accumulation of peat in the ensuing millennia, leading the regions to continue to be net carbon sinks with negative atmospheric radiative forcing, given the long life - time of atmospheric CO2.

«Using data series on atmospheric carbon dioxide and global temperatures we investigate the phase relation (leads / lags) between these for the period January 1980 to December 2011.

If you accept that carbon dioxide is a greenhouse gas and that human fossil fuel use is now the dominant contributor to atmospheric CO2 changes, then knowing how much global temperatures respond to increased greenhouse gases in the atmosphere is important for understanding the future climate.

There are no experimental data to support the hypothesis that increases in human hydrocarbon use or in atmospheric carbon dioxide and other green house gases are causing or can be expected to cause unfavorable changes in global temperatures, weather, or landscape.

Mauna Loa is often used as an example of rising carbon dioxide levels because its the longest, continuous series of directly measured atmospheric CO2.

In the paper, Peng et al. (2013) use the Canadian Terrestiral Ecosystem Model to investigate the effects of climate change and increasing atmospheric carbon dioxide concentrations on the amount of carbon that has been drawn down by plants in British Columbia since 1900.

We use the13C / 12C ratio of atmospheric CO2 to distinguish the effects of interannual variations in biospheric and oceanic sources and sinks of carbon.

Making ethanol from corn reduces atmospheric releases of the greenhouse gas carbon dioxide because the CO2 emitted when the ethanol burns is «canceled out» by the carbon dioxide taken in by the next crop of growing plants, which use it in photosynthesis.

Here we use ice - core data from the Antarctic Vostok core to reconstruct a complete atmospheric carbon dioxide record for MIS 11.

Using this data set we find that atmospheric carbon dioxide emissions have increased by over 40 % from 1990 to 2008 with an annual average increase of 3.7 % over the five - year period 2003 — 2007.

Carlin's report argued that the information the EPA was using was out of date, and that even as atmospheric carbon dioxide levels have increased, global temperatures have declined.

While the computer climate models exaggerate the warming effect of atmospheric carbon dioxide, they plausibly simulate that greater economic development driven by growing use of fossil fuels will add more carbon dioxide to the atmosphere.

Solar jet fuel would be carbon - neutral assuming the CO2 is captured from atmospheric air (or comes from biomass) because the CO2 used in the fuel production is equivalent to the CO2 released in combustion.

Increased atmospheric carbon dioxide due to massive burning of carbon - containing fossil fues: petroleum, natural gas, coal; and other causes such as changes to land use and clearing of forest;

Its newly released global carbon budget for 2017 provides estimates of emissions by country, global emissions from land - use changes, atmospheric accumulation of CO2, and absorption of carbon from the atmosphere by the land and oceans.

Every year the GCP provides an estimate of the global carbon budget, which estimates both the release and uptake of carbon including emissions from fossil fuels and industry, emissions from land - use changes, carbon taken up by the oceans and land, and changes in atmospheric concentrations of CO2.

In order to estimate the cumulative CO2 emissions for use in calculating the carbon budget, ESMs within CMIP5 had to back - calculate emissions based on the atmospheric concentrations using the carbon cycle within each model.