Sentences with phrase «current global carbon dioxide»

As we recently reported in Nature Climate Change, significantly expanding sugarcane or lipidcane production in Brazil could reduce current global carbon dioxide emissions by up to 5.6 percent.

Not exact matches

Even though the BFR will spew out tons of the greenhouse gas carbon dioxide, the impacts may not be much greater than current global air travel (depending how many flights end up happening).

What current atmospheric carbon dioxide concentration tells us about the need to stabilise the global climate and the need for a step change in government, city and business action.

The current regulations are aimed at cutting tailpipe emissions of carbon dioxide, a major contributor to global warming.

'' [E] missions of black carbon are the second strongest contribution to current global warming, after carbon dioxide emissions,» wrote Veerabhadran Ramanathan, a prominent climate scientist at the Scripps Institution of Oceanography, and Greg Carmichael, a professor of chemical engineering at the University of Iowa, in the April 2008 issue of the journal Nature Geoscience.

Antarctica was also more sensitive to global carbon dioxide levels, Cuffey said, which increased as the global temperature increased because of changing ocean currents that caused upwelling of carbon - dioxide - rich waters from the depths of the ocean.

The findings indicate some of the likely implications should current trends of rising carbon dioxide and global warming continue.

Climate Change: The Last Great Global Warming (p 56) The levels of carbon dioxide release and current speed of warming across the globe could lead to extinctions on a scale worse than previously thought, an article in this month's Scientific American suggests.

University of Rhode Island Estimates of contemporary global air - sea carbon dioxide (CO2) flux (Takahashi et al. 2009; Landschützer et al. 2014) suggest that subtropical western boundary currents (WBCs) and their zonal extensions are key regions of oceanic carbon uptake (Figure 1a).

Although NAAQS regulation of lead was both technologically and economically feasible, not even a global depression lasting several decades would suffice to lower atmospheric carbon dioxide concentrations below current levels.

* Scientists from the Carnegie Institution's Department of Global Ecology have calculated that if current carbon dioxide emission trends continue, by mid-century 98 % of present - day reef habitats will be bathed in water too acidic for reef growth.

Researchers at Stanford University who closely track China's power sector, coal use, and carbon dioxide emissions have done an initial rough projection and foresee China possibly emitting somewhere between 1.9 and 2.6 billion tons less carbon dioxide from 2008 to 2010 than it would have under «business as usual» if current bearish trends for the global economy hold up.

But Dr. Ken Caldeira, a research scientist at the Carnegie Institution's Department of Global Ecology in Stanford, Calif., and a member of the Royal Society panel, said the difference was that the current carbon dioxide release was occurring quickly, over just two centuries.

Even with a cutback in wasteful energy spending, our current technologies can not support both a decline in carbon dioxide emissions and an expanding global economy.

And if you look at the current rapid rise in global greenhouse - gas emissions, we'll likely put enough carbon dioxide in the atmosphere by mid-century to surpass the 2 °C limit — and soar past the 4 °C limit by century's end.

For example, current models predict that a doubling of carbon dioxide should result in global mean temperature increases of anywhere from 2.5 to 7.5 F.

They report that stopping deforestation and allowing young secondary forests to grow back could establish a «forest sink» — an area that absorbs carbon dioxide rather than releasing it into the atmosphere — which by 2100 could grow by over 100 billion metric tons of carbon, about ten times the current annual rate of global fossil fuel emissions.

But Hansen and his co-authors argue this emissions» limit must be cut in half to draw carbon dioxide levels down to 350 parts per million from their current level of 395 ppm (the highest they have been in 3 million years) and to stabilize global temperatures.

The researchers suggest that current United Nations accounting methods, which chart annual carbon dioxide discharge, should also tally the projected lifetime emissions of power plants to provide a more accurate picture of their impact on global warming.

Carbon dioxide measured at the 400 parts per million level at remote northern locations is a harbinger of average global atmospheric carbon dioxide levels reaching 400 parts per million during the current decade.

The current political cycle is dominated by shrill attacks on anyone who questions whether man - made emissions of carbon dioxide are driving global warming.

Thus, the hypothesis of current global warming as a result of increased emission of carbon dioxide (greenhouse gases) into the atmosphere is not true.

«Peatlands in Malaysia and Indonesia store around 70 gigatons of carbon — if all of this were oxidized, it would be equivalent to seven years of total global carbon dioxide emissions at the current rate.»

Climatologists say that at current rates, atmospheric carbon dioxide levels could reach 550 ppm by mid-century, producing a significant impact on global climate and resulting in increased acification of the world's oceans.

They have told the public, politicians, and the press that «global warming» (alias «climate change») is primarily due to human - caused emissions of carbon dioxide, and that if this continues at current levels that this will result in catastrophic global warming.

The growth in energy - related carbon dioxide emissions in 2017 is a strong warning for global efforts to combat climate change, and demonstrates that current efforts are insufficient to meet the objectives of the Paris Agreement.

Yet even if appropriate measures were taken today to reduce global emissions by 80 percent by 2050, current atmospheric concentrations of carbon dioxide and other long - lived greenhouse gases are already such that the next 50 years of climate change can not be averted.

The current climate models predict that if we continue increasing the concentration of carbon dioxide in the atmosphere it will cause dramatic man - made global warming.

(PBL 2012) Yet to stabilize carbon dioxide concentrations at about 450 ppm by 2050, global emissions will have to decline by about 60 % from current levels.

And you also knew, for example, that that an average gas driven car emitted 4.7 tons of carbon dioxide per year and an electric car would cut that in half even when powered from the current polluting grid, and much much less on a life cycle basis from a future global efficient renewable energy system displacing almost all fossil fuels.

The world's climate is way too complex... with way too many significant global and regional variables (e.g., solar, volcanic and geologic activity, variations in the strength and path of the jet stream and major ocean currents, the seasons created by the tilt of the earth, and the concentration of water vapor in the atmosphere, which by the way is many times more effective at holding heat near the surface of the earth than is carbon dioxide, a non-toxic, trace gas that all plant life must have to survive, and that produce the oxygen that WE need to survive) to consider for any so - called climate model to generate a reliable and reproducible predictive model.

Current global climate models suggest that the water vapor feedback to global warming due to carbon dioxide increases is weak but these models do not fully resolve the tropopause or the cold point, nor do they completely represent the QBO [Quasi Biennial Oscillation], deep convective transport and its linkages to SSTs, or the impact of aerosol heating on water input to the stratosphere.

«There is a TOA imbalance of 6.4 W m - 2 from CERES data and this is outside of the realm of current estimates of global imbalances (Willis et al. 2004; Hansen et al. 2005; Huang 2006) that are expected from observed increases in carbon dioxide and other greenhouse gases in the atmosphere.

The findings indicate some of the likely implications should current trends of rising carbon dioxide and global warming continue.

July 15, 2013 — Under elevated carbon dioxide levels, wetland plants can absorb up to 32 percent more carbon than they do at current levels, according to a 19 - year study published in Global Change Biology from the Smithsonian Environmental Research Center in Edgewater, Md..

The coincidence of the current plateau in global surface temperatures with the continuing rise in the atmospheric concentration of carbon dioxide has raised many questions about the climate models and their forecasts of serious anthropogenic global warming.

Until climatologists can properly make models that reflect the entire global history and take into account plate position and how high the plates ride, oceanic levels due to this and the position of oceans, overall insolation, overall daylength and its effects on average global temperature and factor in known carbon dioxide levels over that time period, then they will be unable to give any correlation between current carbon dioxide levels and global temperature.

With these trends in ice cover and sea level only expected to continue and likely worsen if atmospheric carbon dioxide levels continue to rise, they could alter the stresses and forces fighting for balance in the ground under our feet — changes that are well - documented in studies of past climate change, but which are just beginning to be studied as possible consequences of the current state of global warming.

by Donald C. Morton The coincidence of the current plateau in global surface temperatures with the continuing rise in the atmospheric concentration of carbon dioxide has raised many questions about...

http://illconsidered.blogspot.com/2006/04/historically-co2-never-causes.html 100 years of shift does not factor into the larger scale phenomena http://illconsidered.blogspot.com/2006/01/one-hundred-years-is-not-enough.html Until climatologists can properly make models that reflect the entire global history and take into account plate position and how high the plates ride, oceanic levels due to this and the position of oceans, overall insolation, overall daylength and its effects on average global temperature and factor in known carbon dioxide levels over that time period, then they will be unable to give any correlation between current carbon dioxide levels and global temperature.

14 Concentration of carbon dioxide in the atmosphere (ppm) Carbon dioxide Variation of temperature (C °) from current level Figure 20.4 Science: atmospheric carbon dioxide levels and global temperature.

Thus, if the amount of carbon dioxide in the atmosphere doubles (which is supposed to happen in 2080, according to current emission projections), the global temperature will rise only 1.8 degrees Celsius.

Threats to marine biodiversity in the U.S. are the same as those for most of the world: overexploitation of living resources; reduced water quality; coastal development; shipping; invasive species; rising temperature and concentrations of carbon dioxide in the surface ocean, and other changes that may be consequences of global change, including shifting currents; increased number and size of hypoxic or anoxic areas; and increased number and duration of harmful algal blooms.

Because of the combination of high absorption, a regional distribution roughly aligned with solar irradiance, and the capacity to form widespread atmospheric brown clouds in a mixture with other aerosols, emissions of black carbon are the second strongest contribution to current global warming, after carbon dioxide emissions.

Hurricane forecaster William Gray states that global warming is due to ocean currents, not carbon dioxide, and the earth will likely cool in 5 to 10 years.

This abrupt increase in the gas, 20 times as effective at trapping heat as carbon dioxide, would accelerate global warming 15 - 35 years ahead of current projections, setting off a so - called «economic time bomb» of some $ 60 trillion (roughly the size of the 2012 global economy, writes Climate Central) the commentary estimates.

WHEREAS, the «hockey stick» global warming assertion has been discredited and climate alarmists» carbon dioxide - related global warming hypothesis is unable to account for the current downturn in global temperatures;

This in no way precludes an imposed carbon dioxide increase (such as the current rapid increase from the combustion of fossil fuels) leading to an increase in global temperatures.

«The growth in energy - related carbon dioxide emissions in 2017 is a strong warning for global efforts to combat climate change, and demonstrates that current efforts are insufficient to meet the objectives of the Paris Agreement,» said the IEA.

Global carbon dioxide emissions continue to track the high end of a range of emission scenarios, expanding the gap between current emission trends and the emission pathway required to keep the global - average temperature increase below 2 degrees CeGlobal carbon dioxide emissions continue to track the high end of a range of emission scenarios, expanding the gap between current emission trends and the emission pathway required to keep the global - average temperature increase below 2 degrees Ceglobal - average temperature increase below 2 degrees Celsius.