Sentences with phrase «carbon emission trajectories»

Not exact matches

Our current emissions trajectory locks Earth into a carbon dioxide level of at least 450 ppm, Ralph Keeling says.

If carbon emissions continue on their current trajectory, with global temperatures rising by 2.6 C to 4.8 °C by 2100, applications could increase by 188 percent, leading to an extra 660,000 applications filed each year.

In using the model to assess the ocean - carbon sink, the researchers assumed a «business as usual» carbon dioxide emissions trajectory, the Representative Concentration Pathway 8.5 scenario found in the Intergovernmental Panel on Climate Change for 2006 - 2010, where emissions continue to rise throughout the 21st century.

The solid grey line indicates the emission trajectory that would fulfill the emission reduction targets, i.e., 40 % reduction of carbon dioxide emissions by Year 2030 and 85 % by Year 2050 as compared to the levels in 2010.

If carbon dioxide emissions continue on the current trajectory, coral reef erosion is likely to outpace reef building some time this century.

The trajectories for emissions of carbon dioxide as the world's industrial and industrializing countries boost coal burning are clearly going to be tough to turn around, whether through caps on emissions or efforts to improve non-polluting energy technologies.

It notes the vast scale of the carbon reservoir beneath the tundra in the far north and the centuries of greenhouse gas emissions that could escape on even modest warming trajectories.

I understand why China and India believe «any extra costs for them to divert from established trajectories for carbon dioxide emissions as they pursue prosperity must be covered by the established industrial powers, which still have many times greater emissions on a per - capita basis».

Essentially, China and India, the emerging giants in the global greenhouse, are saying that any extra costs for them to divert from established trajectories for carbon dioxide emissions as they pursue prosperity must be covered by the established industrial powers, which still have many times greater emissions on a per - capita basis and spent a century freely adding greenhouse gases to the atmosphere in building their wealth.

The entire water column in the Arctic is projected to become undersaturated within this century if anthropogenic carbon emissions continue to grow along the SRES A2 business - as - usual trajectory.

(My issue with carbon pricing is simply the lack of evidence that anyone, anywhere, is willing to set a price that would meaningfully influence emissions trajectories.)

Although this will significantly raise its projected greenhouse gas emissions, the present study has identified numerous measures which can be taken to shift this future development pathway on to a lower carbon and more climate friendly trajectory.

In the near term, federal policy could: i) level the playing field between air captured CO2 and fossil - fuel derived CO2 by providing subsidies or credits for superior carbon lifecycle emissions that account for recovering carbon from the atmosphere; ii) provide additional research funding into air capture R&D initiatives, along with other areas of carbon removal, which have historically been unable to secure grants; and iii) ensure air capture is deployed in a manner that leads to sustainable net - negative emissions pathways in the future, within the framework of near - term national emissions reductions, and securing 2 °C - avoiding emissions trajectories.

20The modeled trajectory attempts to impose lower carbon reductions in the early compliance years, within the constraints of maintaining the 10 - year average interim emission performance goals, and not require any state to reduce its annual emission performance goal below its final 2030 target in any compliance year.

In addition to the text of the proposed rule, EPA issued a Regulatory Impact Analysis for the Clean Power Plan, 4 along with numerous technical supporting documents and fact sheets.5 In October 2014, EPA issued a notice of data availability, which provided discussion and solicited additional comment on several topic areas, including the 2020 - 29 compliance trajectories.6 Also in October 2014, EPA issued a supplemental proposal to address carbon pollution from affected power plants in Indian Country and U.S. territories.7 In November 2014, EPA issued an additional technical support document providing examples of how a state could translate its rate - based goal into an equivalent mass - based goal, expressed in metric tons of CO2.8 In November 2014, EPA also issued a memo addressing biogenic CO2 emissions from stationary sources that explicitly relates this topic to the implementation of the Clean Power Plan.9

But here's what could be., exploring different trajectories for aviation efficiency and demand and their impacts on carbon emissions.

As a number of scientific articles have shown, most recently by Kevin Anderson and Alice Bows in the Journal of the Royal Society, limiting the world to 2 °C warming most likely requires peaking total global carbon emissions in the next 5 - 10 years followed by immediate reductions to near - zero by 2050 (see Anderson and Bows emission trajectory options here, via David Roberts, and by David Hone here).

The policy problem is a chain of numbers, each of which can be assigned a clear, unambiguous, unmetaphysical estimated probability distribution: the emissions trajectory, the carbon cycle feedbacks, the climate response, the ocean chemistry response, the ice sheet response, the impacts, these are all quantitative.

Starting at $ 12.50 per metric ton of CO2 (equivalent to $ 11.34 per U.S. ton), the McDermott carbon tax would rise by that same amount each year to reach triple digits before the decade is out — a trajectory that would drive down U.S. emissions by about one third in that time, according to CTC's carbon tax model.

We've released already about 300 GTn of carbon, business as usual estimates are about 1600 GTn of carbon released by 2100 with business - as - usual emission trajectories and some feedbacks.

The authors» main figures are based on the premise that carbon dioxide emissions will continue to rise at the current trajectory.

The flawed premise underlying the proposal is that economic growth can not be achieved without significant carbon emission increases; thus «Clear Skies» will not fundamentally alter the U.S. emissions trajectory.

The energy security and climate implications are sobering: In the absence of prompt action to change the emissions trajectory, developing nations could consume the entire world's 2 °C «carbon budget» by 2030.

Meanwhile, more than half of all industrial carbon emissions have occurred since 1988 - and the world remains on a trajectory for substantial and dangerous global warming.

What this figure shows are the global emission trajectories (in Gigatonnes, Gt, of carbon) that are required to limit humanity's total cumulative emissions (that is, the sum total of all carbon that we will ever emit) to a certain level.

While the imposition of such a high price on carbon emissions is outside the realm of short - term political feasibility, a price of that magnitude is not required to engender a large change in emissions trajectory.

We can clarify the nature of emission trajectories further by picking a carbon budget and examining the required trajectories as a function of the time when we commence mitigation.

Its main message — largely missing from news reports and blogs alike — is that carbon emissions interact with a wide range of other factors, from volcanic activity to El Niño weather patterns, in determining the trajectory of global temperatures.

A robust carbon cap or tax should put the economy on a trajectory toward the science - based deep cuts in emissions required to limit some of the worst impacts of climate change.

Bioenergy is responsible for nearly 20 % of the additional carbon savings needed in the 2DS compared to an emissions trajectory based on meeting existing and announced policies.

GHG emission trajectories that are consistent with the goal of keeping global warming below 1.5 or 2ºC, translate into a global carbon budget that represents a de-facto emissions cap for the whole economy.

As gas prices continued their upward trajectory, climate legislation to cap carbon emissions garnered less support in the U.S. Senate last summer than it had in 2003 and 2005.

Uncertainty in the carbon cycle feedback creates uncertainty in the emissions trajectory required to achieve a particular stabilisation level.

That growth in coal consumption was the primary driver of the record levels of global carbon dioxide emissions in 2011, causing a leading energy economist to worry that «the door to a 2 °C trajectory is about to close.»