Sentences with phrase «glaciers and ice sheets come»

If today's worst - case global warming scenarios of catastrophic melting of glaciers and ice sheets come to pass, sea levels could rise rapidly, wreaking all sorts of geological havoc «comparable with the most rapid increases in sea level that we've seen in the last 15,000 years,» McGuire said.

Not exact matches

Scientists have a pretty good idea of how thermal expansion and melting mountain glaciers will play out over the long term, but when it comes to the ice sheets, «we have no idea,» Willis says.

«These glaciers will keep retreating for decades and even centuries to come and we can't stop it,» said lead study author Eric Rignot, a glaciologist at the University of California, Irvine, and NASA's Jet Propulsion Laboratory in Pasadena, Calif. «A large sector of the West Antarctic Ice Sheet has passed the point of no return.»

From 1993 to 2003, thermal expansion contributed slightly more than half the sea level rise with the rest coming from melting glaciers and ice sheets (IPCC AR4).

Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)

As discussed on the CRYOLIST listserv, the confusion came most likely from a confusion in definitions of what is the permanent ice sheet, and what are glaciers, with the «glaciers» being either dropped from the Atlas entirely or colored brown (instead of white)(No - one that I have seen has posted the legend from the Atlas that gives the definition of the various shadings, though in the 1994 edition I have, glaciers are (unsurprisingly) white, not brown).

... the confusion came most likely from a confusion in definitions of what is the permanent ice sheet, and what are glaciers, with the «glaciers» being either dropped from the Atlas entirely or colored brown (instead of white)... there is simply no measure — neither thickness nor areal extent — by which Greenland can be said to have lost 15 % of its ice.

OCEANS RISING FAST, NEW STUDIES FIND Melting ice could raise levels up to 3 feet by 2100, scientists say David Perlman, Chronicle Science Editor Friday, March 24, 2006 Glaciers and ice sheets on opposite ends of the Earth are melting faster than previously thought and could cause sea levels around the world to rise as much as three feet by the end of this century and 13 to 20 feet in coming centuries, scientists are reporting today.

The rest likely came from melting ice sheets and glaciers.

The remaining 60 percent was likely to have come from the melting of ice sheets and glaciers.

A study using Earth Remote Sensing satellite radar interferometry (EERS - 1 and -2) observations from 1992 through 2011 finds «a continuous and rapid retreat of the grounding lines of Pine Island, Thwaites, Haynes, Smith, and Kohler» Glaciers, and the authors conclude that «this sector of West Antarctica is undergoing a marine ice sheet instability that will significantly contribute to sea level rise in decades to centuries to come» (Rignot et al. 2014).

The study, accepted for publication in the journal Geophysical Research Letters, comes one week after other studies claimed that the «collapse» of some glaciers in the West Antarctic Ice Sheet may be inevitable, due to manmade global warming and other factors.

While worries about rising sea levels are focused on the massive ice sheets of Greenland and Antarctica, the loss of small mountain glaciers comes with its own consequences.

And older climate models did not include dynamic ice sheet vulnerabilities — like high latent - heat ocean water coming into contact with the submerged faces of sea - fronting glaciers, the ability of surface melt water to break up glaciers by pooling into cracks and forcing them apart (hydrofracturing), or the innate rigidity and frailty of steep ice cliffs which render them susceptible to rapid toppliAnd older climate models did not include dynamic ice sheet vulnerabilities — like high latent - heat ocean water coming into contact with the submerged faces of sea - fronting glaciers, the ability of surface melt water to break up glaciers by pooling into cracks and forcing them apart (hydrofracturing), or the innate rigidity and frailty of steep ice cliffs which render them susceptible to rapid toppliand forcing them apart (hydrofracturing), or the innate rigidity and frailty of steep ice cliffs which render them susceptible to rapid toppliand frailty of steep ice cliffs which render them susceptible to rapid toppling.

In addition, Arctic glaciers and the Greenland Ice Sheet are expected to change significantly and contribute to sea level rise in the coming decades.»

«Mountain glacier demise preludes the fate of the great ice sheets on Greenland and Antarctica, if humanity does not come to its senses soon.