Sentences with phrase «uncertainty about the carbon»

The Journal concluded its editorial by asserting that it is «ironic» that liberals who «denounce anyone who cites uncertainties about carbon's climate impact as «deniers»» are now «justifying their opposition to fracking based on scientific uncertainties.»

But, if we can reduce the uncertainty about the carbon sinks, our data could be used to verify the effectiveness of climate mitigations policies.»

Not exact matches

As promising as it sounds, there are many uncertainties about whether solidifying carbon dioxide emissions could be a viable part of a climate strategy, said Bert Metz, a fellow at the European Climate Foundation who is unaffiliated with the study and was the lead author of a 2005 IPCC special report on carbon capture.

So, now instead of carbon listed as being 12.0107 atomic mass units with a measurement uncertainty of about 0.0008, it has an official atomic weight of [12.0096; 12.0116], where the brackets and semicolon indicate an interval of atomic weights.

Uncertainty around that figure means it could be anywhere between 446 and 616 billion tonnes but broadly - speaking, this would mean that about half the carbon budget is already spent.

Jane Burston, Head of the Centre for Carbon Measurement at the National Physical Laboratory, spoke to Climate Action about how the NPL is reducing uncertainty in climate data and helping to develop low carbon technologies.

Clearly, further research into the carbon cycle will be essential to reduce the level of uncertainty about the climate system's response to CO2 emissions.For further reading: R. T. Watson et al.: «Green - house gases and aero - sols» in Houghton et al., «Climate Change, the IPCC Scientific Assess - ment», Cambridge (1990).

It's risk assessment theory that is the more appropriate mode of thinking in debating the risks of CO2, knowing what we know about risk / uncertainty of the carbon cycle, paleo - research, modelling, observations, etc..

Disputes within climate science concern the nature and magnitude of feedback processes involving clouds and water vapor, uncertainties about the rate at which the oceans take up heat and carbon dioxide, the effects of air pollution, and the nature and importance of climate change effects such as rising sea level, increasing acidity of the ocean, and the incidence of weather hazards such as floods, droughts, storms, and heat waves.

In the face of uncertainty about future policies to address climate change, companies are using internal carbon pricing in their strategic planning to manage regulatory risk and explore future scenarios for potential investments.

The conflicting projections and estimates have left scientists and independent experts in a fog of uncertainty about whether mandating corn - based ethanol leads to higher or lower carbon emissions.

Indeed, the FAR widened the likely range of temperature increase for a doubling of carbon dioxide in the atmosphere from the previous assessment, indicating greater uncertainty, not less, about this issue.

Facts about a debate that's turned up more questions than answers,» includes a statement by then Exxon CEO Lee Raymond trumping up uncertainty in the science behind global warming as well as the cost of a carbon - restricted market.

Business managers currently face a great deal of uncertainty about how the transition to a lower - carbon economy will impact their operations.

This ends up changing estimates of cumulative carbon emissions since the pre-industrial period, but given the large uncertainties involved the authors caution against using these revisions to draw conclusions about remaining carbon budgets associated with staying within the 2C or 1.5 C warming targets.

The survey indicates pervasive uncertainty about the future of Australia's carbon pricing scheme, but also a strong expectation that carbon pricing will be a feature of Australia's economic policy framework in the medium to long term.

Nevertheless, 69 % of respondents from large carbon emitters indicate that their companies have cut emissions in anticipation of a carbon price, and 84 % expect their company to do so over the next three years - not withstanding significant uncertainty about whether the carbon price may be repealed.

In the short run, the uncertainty about future national policy may discourage private investment in renewable energy and other low carbon technologies.

The carbon numbers, along with information about the uncertainty of the measurements, are important for countries planning to participate in the Reducing Emissions from Deforestation and Degradation (REDD +) program.

The main argument for a carbon tax rather than a trading scheme is that, if there is a lot of uncertainty about the cost of reducing emissions, and not much uncertainty about the damage caused by climate change, a fixed price for emissions (that is, a tax) will get closer to the optimal outcome than a fixed quantity.

Despite those who want to strictly regulate carbon dioxide emissions and increase the cost of energy for all Americans, there is a great amount of uncertainty about climate science.

The shading indicates a measure of uncertainty about future sea level for two different scenarios — a low emissions scenario where carbon emissions are rapidly cut (blue RCP 2.6) and a high emissions scenario with no carbon cuts (red RCP 8.5).

Given the high uncertainty about the net effect of human carbon dioxide emissions on global temperatures, we only see natural changes in climate.

University of Alaska permafrost researcher Vladimir Romanovsky said the models the USGS used in its projections for Alaska's future carbon storage do not capture the vast uncertainties about how much methane melting permafrost will emit.

The latter is particularly important because it tells us what the least (and hence most constraining) carbon budget is that we may encounter at a given level of uncertainty about the climate.

That is, the greater our uncertainty about climate sensitivity, the greater the expected (average) carbon budget that we have available to limit warming to 2 °C.

However, the social cost of carbon (SCC) is higher (by about 15 %) under uncertainty than in the certainty - equivalent case because of asymmetry in the impacts of uncertainty on the damages from climate change.

This value corresponds to a warming of about 1.6 (with uncertainty of 0.4) deg C due to doubling the amount of carbon dioxide.».

But a lack of demand from carbon markets and uncertainty about how many credits could be used as part of future global emissions cuts has scared off many private sector investors.

These findings are not sensitive to a wide range of assumptions, including the time series used to measure temperature, the omission of black carbon and stratospheric water vapor, and uncertainty about anthropogenic sulfur emissions and its effect on radiative forcing (SI Appendix: Sections 2.4 — 7).

The uncertainties can reach centuries or even millennia due to carbon reservoir effects, wrong assumptions about sedimentation rates between and beyond the tie - point ages and due to the «lock - in depth», which means that magnetic particles might remain subject to adjustment while the sediment is still unconsolidated.

As of today, significant uncertainties remain about the amount and permanence of carbon sequestration over the full lifecycle of carbon farming techniques.

What you fail to mention in your «uncertainty» and your hopelessly pessimistic comment about China and India is that the carbon footprint of the average American is 19 tons of CO2 per capita.

There has been no attempt to propagate uncertainty through the FUND, DICE and PAGE models, not to mention whatever front end assumptions about carbon and climate are being used as inputs.

Although Table 2 reveals a large estimated uncertainty about the social cost of carbon, there is reason to believe that the actual uncertainty is larger still.

The researchers emphasize that there are numerous uncertainties about the magnitude of future climate change, such as energy feedbacks from clouds and the carbon cycle.

The research is a «big advance» that halves the uncertainty about how much warming is caused by rises in carbon emissions, according to scientists commenting on the study, published in the journal Nature.

Uncertainty about the modelling approaches is associated with the extent to which substitution is allowed in terms of backstop technology, whether the economy responds efficiently (in terms of the use of CGE models), and whether technological change is assumed to respond to carbon prices, the topic of the next section.

Uncertainty about the future climatic effect of carbon dioxide emissions consists of two parts: the future carbon dioxide concentration given current levels of emissions, and the amount of warming that can be expected from a given carbon dioxide concentration.