Sentences with phrase «melted by ocean currents»

Not exact matches

Each summer some of it melts or breaks off and is carried away by ocean currents.

The immediate disasters of The Day After Tomorrow remains wild exaggeration, but melting ice could yet cause dramatic climate changes by altering ocean currents

My research indicates that the Siberian peat moss, Arctic tundra, and methal hydrates (frozen methane at the bottom of the ocean) all have an excellent chance of melting and releasing their stored co2.Recent methane concentration figures also hit the news last week, and methane has increased after a long time being steady.The forests of north america are drying out and are very susceptible to massive insect infestations and wildfires, and the massive die offs - 25 % of total forests, have begun.And, the most recent stories on the Amazon forecast that with the change in rainfall patterns one third of the Amazon will dry and turn to grassland, thereby creating a domino cascade effect for the rest of the Amazon.With co2 levels risng faster now that the oceans have reached carrying capacity, the oceans having become also more acidic, and the looming threat of a North Atlanic current shutdown (note the recent terrible news on salinity upwelling levels off Greenland,) and the change in cold water upwellings, leading to far less biomass for the fish to feed upon, all lead to the conclusion we may not have to worry about NASA completing its inventory of near earth objects greater than 140 meters across by 2026 (Recent Benjamin Dean astronomy lecture here in San Francisco).

We're told that ice is melting rapidly and at the current rate the Arctic Ocean could be ice - free by 2050 (a sobering thought).

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It is possible the Arctic ice melt could also be related to ocean currents carrying highly saline water caused by the recent increased SSTs in the temperate oceans between 1985 and 2005 to the region.

On the other hand, the budgeting of salinity implicit in the ocean model used by Hatun et al. may not properly account for river run - off (freshens the water), transport from the Pacific, the Canadian Archipelago, the East Greenland current, or melting processes.

SLR by 2100 is more likely to come from ice mass loss from West Antarctica (WAIS) where warm ocean currents are already melting ice at glacier mouths and attacking areas of the WAIS resting on the seabed.

(08/31/2009) If current melting trends continue, the Arctic Ocean is likely to be free of summer sea ice by 2015, according to research presented at a conference organized by the National Space Institute at Technical University of Denmark, the Danish Meteorological Institute and the Greenland Climate Center.

If fresh submarine groundwater discharge approaches just 7 % of the total SGD, it would not only balance current groundwater recharge, but would steadily raise sea level by an additional 2 mm / year, even if there was no ocean warming and no melting glaciers.

It could take decades or centuries, but change will be locked in by a 3C temperature rise, which would extensively melt ice caps, shrink glaciers and thermally expand the oceans so many current coastlines and low - lying plains would be under sea level.

Hamish Pritchard prepares us, «In most places in Antarctica, we can't explain the ice - shelf thinning through melting of snow at the surface, so it has to be driven by warm ocean currents melting them from below.

Some of the warm water would be subducted by Atlantic Meridional Overturning Circulation / Thermohaline Circulation, some would be carried by ocean currents into the Arctic Ocean where it would melt sea ice, and the remainder would be spun southward by the North Atlantic gyre toward the tropics so it could be warmed more by the effects of the slower - than - normal trade wocean currents into the Arctic Ocean where it would melt sea ice, and the remainder would be spun southward by the North Atlantic gyre toward the tropics so it could be warmed more by the effects of the slower - than - normal trade wOcean where it would melt sea ice, and the remainder would be spun southward by the North Atlantic gyre toward the tropics so it could be warmed more by the effects of the slower - than - normal trade winds.

As a rough estimate, half of the current ice loss in West Antarctica is by melting where the glaciers meet the ocean, and half is by calving.

By an intelligent diversion of warm ocean - currents together with some means of colouring snow so that the sun could melt it, it might be possible to keep the Arctic ice - free for one summer, and that one year might tip the balance and permanently change the climate of the northern hemisphere.

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 top of the glacier is melting away as a result of decades of steadily increasing air temperatures, while its underside is compromised by currents carrying warmer ocean water, and the glacier is now breaking away into bits and pieces and retreating into deeper ground.»

Scientists are exploring the small but real possibility that even small shifts in ocean currents, possibly set in motion by global warming, may trigger the catastrophic melting of the world's two great ice sheets.

What has been done by WHT was to track the melt dates with a view to showing a trend that is consistent with current trends in the Arctic ocean — nothing more.

Just for one example, if it turns out that, between melt of sea ice and Greenland ice, the North Atlantic Current slows or stops, we would expect to see fairly dramatically colder weather in Europe for a while, even thought this condition could be directly linked to results produced by GW (though in the long term, the warming would, presumably eventually overtake the cooling from change in ocean currents).

Elsewhere, the ocean is perpetually covered by ice (dark blue colors), except near the equator where winds and ocean currents push sea ice eastward onto the dayside where it breaks up and melts (pale blue to light yellow colors).

Some scientists believe that global warming could shut down this ocean current system by creating an influx of freshwater from melting ice sheets and glaciers into the subpolar North Atlantic Oocean current system by creating an influx of freshwater from melting ice sheets and glaciers into the subpolar North Atlantic OceanOcean.