Sentences with phrase «uncertainty analysis on»

However, at this point, no one has done a rigorous error or uncertainty analysis on the data, so Landsea's statements about the trends are not supported by any rigourous analysis at this point.

The IPCC [the United Nations» Intergovernmental Panel on Climate Change] took a shortcut on the actual scientific uncertainty analysis on a lot of the issues, particularly the temperature records.

Not exact matches

In their analysis of the new legislation, lawyers at McCarthy Tétrault warned its «broad concepts and elements of uncertainty» could «place a heavy burden» on foreign companies looking to invest in Canada; the risk of a meddlesome minister torpedoing a deal is just too high.

Important factors that could cause our actual results and financial condition to differ materially from those indicated in the forward - looking statements include, among others, the following: our ability to successfully and profitably market our products and services; the acceptance of our products and services by patients and healthcare providers; our ability to meet demand for our products and services; the willingness of health insurance companies and other payers to cover Cologuard and adequately reimburse us for our performance of the Cologuard test; the amount and nature of competition from other cancer screening and diagnostic products and services; the effects of the adoption, modification or repeal of any healthcare reform law, rule, order, interpretation or policy; the effects of changes in pricing, coverage and reimbursement for our products and services, including without limitation as a result of the Protecting Access to Medicare Act of 2014; recommendations, guidelines and quality metrics issued by various organizations such as the U.S. Preventive Services Task Force, the American Cancer Society, and the National Committee for Quality Assurance regarding cancer screening or our products and services; our ability to successfully develop new products and services; our success establishing and maintaining collaborative, licensing and supplier arrangements; our ability to maintain regulatory approvals and comply with applicable regulations; and the other risks and uncertainties described in the Risk Factors and in Management's Discussion and Analysis of Financial Condition and Results of Operations sections of our most recently filed Annual Report on Form 10 - K and our subsequently filed Quarterly Reports on Form 10 - Q.

Although there is substantial uncertainty over the timing and size of expansions, the analysis suggests that new capacity coming on stream between mid 2004 and 2007 would imply an increase in overall production of around 28 per cent from the levels of 2003/04, corresponding to annual growth of about 9 per cent.

Further analysis of the impacts of policies on prices and bills, including analysis on households medium - sized businesses and large energy intensive users and a breakdown by individual policy, will be published later this year alongside the Annual Energy Statement and should provide more detail on the uncertainty surrounding the true cost of the Government's policies.

Using a representative sample of 20 different methods for predicting extreme sea levels the researchers focused intensely on the measures of uncertainty that accompany any prediction, but that are particularly vexing in the analysis of extremes.

Despite several new analyses with improved cross-calibration of the 13 instruments on different satellites used since 1979 and compensation for changes in observing time and satellite altitude, some uncertainties remain in trends.

As it is explained in the «Notes for Lead Authors of the IPCC Fourth Assessment Report on Addressing Uncertainties»: Likelihood may be based on quantitative analysis or an elicitation of expert views.

The team admit there is some uncertainty over the date when China may have become the biggest emitter of CO2, as their analysis is based on 2004 data.

However, one of the panel's reservations was that ``... a statistical method used in the 1999 study was not the best and that some uncertainties in the work «have been underestimated,»...» The panel concluded «Based on the analyses presented in the original papers by Mann et al. and this newer supporting evidence, the committee finds it plausible that the Northern Hemisphere was warmer during the last few decades of the 20th century than during any comparable period over the preceding millennium.

Note that uncertainty in forcings is partly obviated via the focus on Earth's energy imbalance in our analysis.

In addition, model intercomparison studies do not quantify the range of uncertainty associated with a specific aerosol process, nor does this type of uncertainty analysis provide much information on which aerosol process needs improving the most.

This paper presents a review of existing literature on emission factors, emission data collection techniques, and analytic approaches; presents the results of SAIC's analysis of available CO2 and CH4 GHG emission data from chassis dynamometer tests of heavy - duty vehicle exhaust; and provides suggestions for further reducing this uncertainty.

Massachusetts Institute of Technology Joint Program on the Science and Policy of Global Change Uncertainty Analysis of Global Climate Change Projections: http://web.mit.edu/globalchange/www/rpt73.html

If she accepts that attribution is amenable to quantitative analysis using some kind of model (doesn't have to be a GCM), I don't get why she doesn't accept that the numbers are going to be different for different time periods and have varying degrees of uncertainty depending on how good the forcing data is and what other factors can be brought in.

Of course, this would need to be justified by some analysis, which itself would be subject to some structural uncertainty... and so on.

And, as Kevin Trenberth of the National Center for Atmospheric Research warned not long ago, the climate simulations run for the next report from the Intergovernmental Panel on Climate Change (AR5 below) are likely to produce more uncertainty than earlier analyses:

We recently published a paper exploring the impact of observational uncertainty on an attribution analysis.

In the interview, with Andy Balaskovitz, I described the value of having a public more attuned to how science works — that new knowledge is what's left over after peers chew on each others» data and analysis, and that argument and uncertainty are normal, that science is a journey, not a set of facts:

2) Uncertainty / error analysis based on both the uncertainties in the temperature reconstruction and in the TSI (allready mentioned here by rasmus and urs).

Note also that the raditiave uncertainties surrounding sulphates are large, so any analysis (like all of those discussed on this thread) would be informative rather than conclusive.

A brief analysis based on multi-gas emission pathways and several climate sensitivity uncertainty estimates.

Results do not address all sources of uncertainty, but their scale and scope highlight one component of the potential health risks of unmitigated climate change impacts on extreme temperatures and draw attention to the need to continue to refine analytical tools and methods for this type of analysis

In the midst of such uncertainty, on Oct. 15 the EPA's Office of Inspector General announced it would conduct an independent inquiry into whether the agency properly updated its own life cycle analysis in light of the 2011 National Academy of Sciences study.

So, while the environment that produces precipitation is affected by the observational analysis, precipitation relies on the model physics, and has significant uncertainty.

What is needed instead is for economists to step up and do the analyses of the costs and benefits of GHG emissions and of proposed policies — including stating the uncertainties on their results.

With the far more common and widely accepted method, decision analysis, the policy analysts need the projected costs and benefits, the probabilities that the costs and benefits will be achieved given the real world constraints, and the uncertainties on the inputs.

If analysis of historical data on GHG rise and net effects of aerosols establishes beta = 0.5, then TCR = 1.2 C. But, beta is uncertain and might be as low as 0.4, in which case TCR = 1.3 C. But, TCR (1 + beta) = 1.8 C and only has uncertainty introduced by uncertainty in the historical GMST and CO2 level rise.

His research focuses on the estimation of the «social cost of carbon,» including the proper discount rate to be used in cost - benefit analyses and the implications of structural uncertainty for policy solutions.

All the above concerns most clearly situations where we can not repeat experiments of identical setup to obtain an empirical distribution of results, but where the function that describes uncertainties is based on an analysis of the empirical method.

«Rather than justifying a lack of response to climate change, the emphasis on uncertainty enlarges the risk and reinforces the responsibility for pursuing successful long - term mitigation policy,» according to a 2010 analysis by researchers at Sandia National Laboratory.

As noted above, the uncertainty estimates derived from a particular analysis will tend to underestimate the true uncertainty because they are conditional on the analysis method being correct.

In the 6 hours that I have been able to devote to this, here is my first take on their uncertainty analysis.

We've been working on fairly abstruse aspects of the economics of uncertainty, though with an eye to practical applications to issues like an analysis of the precautionary principle.

This analysis is based on a set of interviews with decision - makers, in particular World Bank project leaders, and on a literature review on decision - making under uncertainty.

The use of even more recently computer - reconstructed total solar irradiance data (whatever have large uncertainties) for the period prior to 1976 would not change any of the conclusions in my paper, where quantitative analyses were emphasized on the influences of humans and the Sun on global surface temperature after 1970 when direct measurements became available.

We applied the same method used in the observational analysis on general circulation model data to decrease the statistical uncertainty at the expense of an increased systematic uncertainty.

«The language of denial: Text analysis reveals differences in language use between climate change proponents and skeptics» «Comment on «Climate Science and the Uncertainty Monster» by J. A. Curry and P. J. Webster» «Guidance note for lead authors of the IPCC Fifth Assessment Report on consistent treatment of uncertainties»

A cost - benefit analysis depends sensitively on these uncertainties.

Includes background information on greenhouse gas emission inventories, an introduction to climate change, an overview of institutional arrangements and compilation process for this inventory, including methods, data, QA / QC and an uncertainty analysis.

A pragmatic response is to acknowledge and highlight such unquantifiable uncertainties but to present results on the basis that they have zero effect on our analysis.

My reasoning: these latest estimates (unlike the 3.2 C estimate in AR4) are based on analysis of the actual past record with some estimates made for natural forcing / variability (with some uncertainty on whether these natural factors have been underestimated).

HadISDH provides values for the variables and their uncertainties for 5 ° x5 ° grid squares, based on direct analysis of quality - controlled station data.

This study addresses the challenge by undertaking a formal detection and attribution analysis of SCE changes based on several observational datasets with different structural characteristics, in order to account for the substantial observational uncertainty.

Even the original publications are often quite terse on other uncertainties than those given by the statistical analysis directly.

On his blog, tamino does the statistical analysis of the BEST data and finds that because the timeframe in question is so short, the uncertainty is too large to say for certain that the short - term trend in question is any different than the long - term trend.

Harp DR, Atchley AL, Painter SL, Coon ET, Wilson CJ, Romanovsky VE, Rowland JC (2016) Effect of soil property uncertainties on permafrost thaw projections: a calibration - constrained analysis.

Sensitivity analysis indicates that uncertainty about the measure of surface temperature, anthropogenic sulfur emissions, or its conversion to radiative forcing has a small effect on the model's simulated forecast for global surface temperature (SI Appendix: Section 2.4 and Figs S3, S4).

But I do know the difference between a simple linear interpolation and principal component analysis, and I can calculate the two standard deviations range of uncertainty on a white noise linear trend.