Sentences with phrase «ice streams which»

The 11 - hour round - trip from Punta Arenas included a series of low - level passes over the massive ice stream which is 20 miles wide and in places more than one mile thick.

Not exact matches

For hundreds of years, the Kaskawulsh Glacier formed a wall that segregates snow and ice meltwater into two streams: the Slims River, which joins with other streams and crosses Alaska before draining into the Bering Sea, and the Kaskawulsh

Much of the dust deposit east of the Rockies arrived in the last ice age, which ended some 11,000 years ago, when particles that had been ground up and transported by glaciers were deposited by meltwater streams.

• One is that the cold air above the Laurentide Ice Sheet created a tremendous high pressure system that shifted the polar jet stream to the south, pushing the track followed by winter storms down into the Southwest, which had the effect of dramatically reducing the amount of rainfall in the Northwest while increasing it in the Southwest.

When the jet stream does that, it transports more heat and moisture up into the Arctic, which heats the Arctic more, which make the jet stream even wavier — another vicious cycle related to disappearance of sea ice.

The rates at which the grounding lines of the ice streams recede will increase.

Reedy Glacier is the main East Antarctic tributary of old ice stream A, which mostly drains West Antarctic ice, so the high moraines had to result from thicker West Antarctic ice.

However, scientists have several ingenious ways in which they can observe changes to this fragile, important ice stream.

This melts the ice shelf from below24, and this melting is probably the cause of the observed ice stream thinning, acceleration and grounding line recession25, which is contributing to a sea level rise of 1.2 mm per decade3.

As a result of such extensive sea ice melt, says the study, the jet stream, which has always been rather capricious, is behaving differently now.

The ice stream is steepening, which increases the gravitational driving stress, helping it to flow faster, and there is no indication that the glacier is approaching a steady state10.

In this case, incursions of circumpolar deep water onto the continental shelf are melting the ice stream at its base and encouraging grounding line recession, which results in a positive feedback loop and further grounding line recession.

«The idea is that ice loss in this area tends to create a wavier jet stream pattern, which causes colder winters in central Asia and blocking patterns that make this weather regime very persistent.»

Under the hood, Asus Transformer TF300T will be houses in Quad - Core NVIDIA Tegra 3 chipset and powered by new Qualcomm Snapdragon APQ8060A dual - core processor which offer clocking speed of 1.2 GHz, 1 GB of DDR2 RAM and running on latest Android 4.0 Ice Cream Sandwich as the operating system provide stable platform for multi tasking, playing games, internet browsing, streaming video on the internet and much more.

Among their most popular projects are «Spoonbridge and Cherry», a functional walking bridge over a stream in the form of a teaspoon holding a cherry, «Shuttlecocks», which seem to have landed from a titan - sized badminton game and «Dropped Cone», a giant vanilla ice cream cone that collides with the corner of the roof of a shopping mall.

... indicates that glacial sediment sources were different from modern ones, which could reflect changes in the catchment areas of the glaciers and ice streams.

Simple physics dictates that with less sea ice there is magnified warming of the Arctic due to powerful albedo feedback; this in turn reduces the equator to pole temperature gradient which slows the jet stream winds causing them to become more meridional; this combined with 4 % more water vapor in the atmosphere (compared to 3 decades ago) is leading to much more extremes in weather.

Even without a melt the ice would form glaciers and the flow in to the sea to form icebergs which would melt when they reach warmer water in the gulf stream.

The discovery is significant in relation to the mechanism for rapid movement of the ice streams, which are huge, fast - flowing ice currents within the slow - moving ice sheet that covers most of Antarctica.

I think there is evidence that AGW has caused the decline in arctic sea ice, which may be responsible for the changes seen in the paths of the jet stream, which may be responsible for the blocking high over Greenland which was responsible for Sandy's left turn.

I have alluded to Phillips» opinion, because I see in Geikie's late work that reference is made to the fact that from the foot of glaciers in Greenland streams of water issue and unite to form considerable rivers, one of which, after a course of forty miles, enters the sea with a mouth nearly three - quarters of a mile in breadth — the water flowing freely at a time when the outside sea was thickly covered with ice.

You say that there is evidence that AGW has caused the decline in arctic sea ice, which may be responsible for the changes seen in the paths of the jet stream, which may be responsible for the blocking high over Greenland which was responsible for Sandy's left turn.

By contrast, «West Antarctica has ice streams, of which Pine Island is one.

The new system — which captures current sea - ice conditions more accurately and in greater detail by blending several streams of data — has been used operationally in Navy forecasting since February, Posey said.

A number of climate scientists are currently investigating the possible link between abnormal jet streams and the rapid loss of Arctic sea ice, which if true would mean climate change may not only be exacerbating heatwaves but cold spells as well.

Following Twemoran advice, I wrote to all London MEP (8 representatives) a little more than 2 weeks ago, summarizing the impact of the Arctic amplification (on permafrost, methane hydrate and Greenland ice sheet) and the impact on NH climate with the slowing down of the jet stream and more extreme weather (+ further down the line potential issue on food security) I also attached the «Weird winter mad March Part 2» video with extract of numerous scientists of which Jeff Masters and J. Francis to illustrate the impact on NH climate.

Screen (32) explored the influence of Arctic sea ice on European summer climate using a state - of - the - art atmospheric model in view of the historically unprecedented sequence of six consecutive wet summers from 2007 to 2012 in northern Europe, which featured a marked southward shift of the polar jet stream.

Much remains mysterious about ice streams in Greenland — and even vaster ones in Antarctica, which have also surged ominously.

All of these characteristics (except for the ocean temperature) have been used in SAR and TAR IPCC (Houghton et al. 1996; 2001) reports for model - data inter-comparison: we considered as tolerable the following intervals for the annual means of the following climate characteristics which encompass corresponding empirical estimates: global SAT 13.1 — 14.1 °C (Jones et al. 1999); area of sea ice in the Northern Hemisphere 6 — 14 mil km2 and in the Southern Hemisphere 6 — 18 mil km2 (Cavalieri et al. 2003); total precipitation rate 2.45 — 3.05 mm / day (Legates 1995); maximum Atlantic northward heat transport 0.5 — 1.5 PW (Ganachaud and Wunsch 2003); maximum of North Atlantic meridional overturning stream function 15 — 25 Sv (Talley et al. 2003), volume averaged ocean temperature 3 — 5 °C (Levitus 1982).

Or Arctic sea ice loss could lead to an increase of snow on high - latitude land, which in turn impacts the jet stream resulting in cold Eurasian and North American winters.

However, the northeast ice stream, which drains 16 % of the ice sheet, was not thought to contribute.

In an article on September 12, I reported on a 2012 paper by Jennifer Francis of Rutgers University and Stephen Vavrus of the University of Wisconsin, which showed that the loss of Arctic summer sea ice cover is adding enough heat to the ocean and atmosphere that it is helping to redirect the jet stream — the fast - moving high - altitude river of air that steers storm systems across the northern hemisphere.

As a result of such extensive sea ice melt, says the study, the jet stream, which has always been rather capricious, is behaving differently now.

The new study, along with other previously published research, showed that the decline in sea ice and snow cover has slowed the west - to - easterly component of the jet stream, thereby enhancing the north - to - south waviness of the jet, which leads to the creation of more stagnant or «blocked» weather patterns.

The whole overblown scare over ice caps melting, sea level rise, and climate catastrophe in the main stream press is predicated on a myth that there is warming and warming is bad caused by a trace gas which only is plant food.

Efficient surface drainage was routed through 523 high - order stream / river channel networks, all of which terminated in moulins before reaching the ice edge.