Sentences with phrase «highly uncertain climate»

Soil carbon release remains a highly uncertain climate feedback.

Not exact matches

«In this budget climate, though, getting to do an experiment like that is highly uncertain,» Lauretta says.

Considering the «combined expectations for low asset returns and the unavoidable reality of downside risk in a highly uncertain global political and economic climate,» investors of all types are looking for new ways to diversify their portfolios, according to a new analysis from Willis Towers Watson, «Breaking the Style Box.»

To suggest that a carbon tax system would obviate the need for «highly politicized and uncertain negotiations» and that, by contrast, «a carbon - tax model provides a friendly way for countries to join a climate treaty» indicates that Nordhaus» carbon tax sits comfortably in a text book but has little relevance to the real world of climate policy.

JC; «Human caused climate change is a theory in which the basic mechanism is well understood, but whose magnitude is highly uncertain.

Human caused climate change is a theory in which the basic mechanism is well understood, but whose magnitude is highly uncertain.

Computer models of a warming climate indicate that conditions may become more conducive to severe thunderstorms in some regions.11 Thunderstorms provide a favorable environment for tornado formation; but tornadoes also require wind shear, a highly uncertain element in climate models.

We know the climate sensitivity to radiative forcing to be about 3 °C per 4 W / m2 of forcing to within something like a 10 % uncertainty, base on current climate modeling and the geological record (see Hansen et al., 2008) for details http://pubs.giss.nasa.gov/abs/ha00410c.html The natural (unforced) variability of the climate system is going to remain highly uncertain for the foreseeable future.

«[I] t is not possible to tell how much of the modest recent warming can be ascribed to human influences,» wrote Happer, Koonin and Lindzen, «and there have been no detrimental changes observed in most salient climate variables and projections of future changes are highly uncertain.»

But in the face of climate change, long - term planning (over several decades) is needed for a future that is highly uncertain.

For example, responses to recent historical climate variability and change in four locations in southern Africa demonstrated that people were highly aware of changes in the climate, including longer dry seasons and more uncertain rainfall, and were adjusting to change through collective and individual actions that included both short - term coping through switching crops and long - term adaptations such as planting trees, and commercialising and diversifying livelihoods (Thomas and Twyman, 2005; Thomas et al., 2005).

No - I also don't doubt that ACO2 will warm the climate if all other conditions remain unchanged (which is highly unlikely to happen in the actual system), but am uncertain about the magnitude / timing of the effect in the real climate system and whether any change will lead to conditions that are better or worse for the US or the planet overall.

«There have been no detrimental changes observed in the most salient climate variables and today's projections of future changes are highly uncertain,» reads a separate brief filed by Princeton University physicist William Happer, New York University physicist Steven Koonin and Massachusetts Institute of Technology climatologist Richard Lindzen.

FORECASTS involving climate change are highly uncertain, denialists assert — a point that climate researchers themselves readily concede.

Yet action to address the risk is complicated because of what Wagner and Weitzman call the Big Four problems: Any one country's effort to prevent climate change alone would be ineffective; political systems struggle to address long - term challenges; by the time humanity decides to act aggressively, it may be too late; and the risks are highly uncertain, which makes them easy to dismiss.

Assessing the role of uncertain precipitation estimates on the robustness of hydrological model parameters under highly variable climate conditions.

Because the majority of recent ΔFP − M estimates (see Sect. 1) are only in the range 0.1 − 0.2 W / m2, and amplification processes have not been identified, the role of the solar forcing in the natural climate change remains highly uncertain (Solomon et al. 2007).

Climate IAMs have «hundreds of input parameters, each of which is highly uncertain in the long run.»

Caps will error because (1) they won't cover some major emitters for decades, (2) they won't cover land - use changes, (3) the best scientific estimate of climate sensitivity is uncertain by hundreds of billions of tonnes, (4) the earth's CO2 uptake by 2 ° target date is highly uncertain.

«Given the large variability in discharge and SMB observed within the past decade and the potential for unaccounted positive feedback within the ice - climate system, however, the contribution of GrIS discharge to future sea level rise remains highly uncertain.»

One of the most vexing aspects of predicting climate change, of course, is that future outcomes are highly uncertain.

Anthropogenic climate change is a theory whose basic mechanism is well understood, but whose magnitude is highly uncertain.

On one hand, the reduction in global SO2 emissions reduces the role of sulfate aerosols in determining future climate toward the end of the 21st century and therefore reduces one aspect of uncertainty about future climate change (because the precise forcing effect of sulfate aerosols is highly uncertain).

A number of anthropogenic and natural factors (e.g., aerosols, greenhouse gases, volcanic activity, solar variability, and internal climate variability) must be considered as potential contributors, and the science remains highly uncertain in these areas.

``... the amplitude and even the sign of cloud feedbacks was noted in the TAR as highly uncertain, and this uncertainty was cited as one of the key factors explaining the spread in model simulations of future climate for a given emission scenario.

Quantifying the net human influence on the climate is a more difficult task, because the magnitude of the cooling effect from aerosols remains highly uncertain.

The direct and indirect radiative effects of aerosols suspended in the atmosphere above clouds (ACA) are a highly uncertain component of both regional and global climate.