Sentences with phrase «unknown is sea level rise»

The more important point is that the one known unknown is sea level rise: all the other IPCC stuff is OK by me apart from being at least a few years out of date.

Not exact matches

The landmark environmental law has spurred significant progress but the nation's waterways now are threatened by sea - level rise and ocean acidification — unknown in 1972

But what exactly the new findings mean for sea level rise estimates is still unknown.

The dynamics of large of sheets is of course a possible unknown, but no one has yet be able to come up with a * mechanism * for 5 m of sea level rise in 100 years given current ice sheet configurations.

Thus, otherwise quite conservative voices have been stressing the «unknown unknown» nature of this problem and suggesting that, based on paleo - data (for instance), it was really hard to rule out sea level rises measured in feet, and not in inches.

As intriguing a concept as it is, a «tipping point» is less useful if poorly defined quantitatively or largely unknown, as apparently is the case with two key examples that you cite: thermohaline circulation and substantial melting of ice sheets leading to «dangerous» sea level rise.

Throw in that in some areas sea level is rising and in others it is falling, thermostatic expansion, natural rise / fall of land, and a largely unknown rate of glacier melting and we have to be very cautious at arriving at an «average» figure for any sea level change.

If you can still convince yourself that your odd theory that heat somehow trapped by greenhouse gases is causing sea level rise or fall, and that you can somehow account for things like totally unknown vertical displacements in sea beds in your measurement, you can probably qualify as a climate scientist.

And there's a «probably low» but unknown risk that warmer rising seas could undermine the ice sheet that covers western Antarctica, raising average sea levels far more and more quickly than the roughly 1 meter (3 feet) they're now projected to increase by 2100.

Until recently, the contribution of ice sheets to sea - level rise remained unknown and is still debated, but the current acceleration of sea - level rise is attributed to heating of the oceans and melting of land glaciers which is supported by measurements of ocean temperatures and the behavior of mountain glaciers, the vast majority of which are retreating or exhibit signs of instability.

The effects of this marked shift in westerly winds are already being seen today, triggering warm and salty water to be drawn up from the deep ocean, melting large sections of the Antarctic ice sheet with unknown consequences for future sea level rise while the ability of the Antarctic Circumpolar Current to soak up heat and carbon from the atmosphere remains deeply uncertain.

The largest unknown for future sea level rise is caused by uncertainty in the predicted response of the Antarctic ice sheet to global warming.

The impact of the melting of the great ice sheets of Greenland and Antarctica is the biggest unknown in projections of future sea - level rise.

The statement is for acceleration in sea level rise regardless of sparse data and other unknowns and available data.

Such solecisms throughout the IPCC's assessment reports (including the insertion, after the scientists had completed their final draft, of a table in which four decimal points had been right - shifted so as to multiply tenfold the observed contribution of ice - sheets and glaciers to sea - level rise), combined with a heavy reliance upon computer models unskilled even in short - term projection, with initial values of key variables unmeasurable and unknown, with advancement of multiple, untestable, non-Popper-falsifiable theories, with a quantitative assignment of unduly high statistical confidence levels to non-quantitative statements that are ineluctably subject to very large uncertainties, and, above all, with the now - prolonged failure of TS to rise as predicted (Figures 1, 2), raise questions about the reliability and hence policy - relevance of the IPCC's central projections.

Climate scientists withdraw journal claims of rising sea levels Study claimed in 2009 that sea levels would rise by up to 82 cm by the end of century — but the report's author now says true estimate is still unknown David Adam guardian.co.uk, Sunday 21 February 2010 18.00 GMT