Sentences with phrase «thick old ice»

Bottom line: the great ice loss of summer 2007 was substantially set up by the export of huge amounts of thick old ice many years earlier, as described here:

Particularly important, according to Ignatius Rigor of the University of Washington, was a great «flush» of thick old ice around 1989 and another around a decade later (animation below).

A new study, led by Son Nghiem at NASA's Jet Propulsion Laboratory and appearing this week in Geophysical Research Letters, used satellites and buoys to show that winds since 2000 had pushed huge amounts of thick old ice out of the Arctic basin past Greenland.

Here's the main graphic, which shows the dramatic recent expansion of open water (dark blue) at the peak of summer melt, and the decline in thick old ice (white is ice that is over five years old) and thin ice formed the previous winter (light blue).

And, we are losing thick old ice via export and melt while the seasonal ice has stayed relatively unchanged.

Ignatius Rigor was among those who pointed me to a particularly important one - time «flush» (my term) of thick old ice around 1989 - 90 that had an enduring impact on the proportion of older ice from then on.

Arctic sea ice is varying there because of dynamics AND thermodynamics on many time scales and driven by all manner of influences — with much of the recent drop due to a big flush of thick old ice many years ago.

The total area covered by thick older ice that survives one or more summers («multi-year ice») shrank 42 percent or 1.54 million square kilometers (595,000 square miles), leaving thinner first - year ice («seasonal ice») as the dominant type of ice in the region.

Not exact matches

Imagine a dark, dense chocolate cake — a great big hunk of cake, all topped with an old - fashioned thick white, butter - based icing like Woolworths and diners used to sell.

Wayback Burgers offers burgers made from 100 percent fresh, never - frozen ground beef, cooked to order, available as a single, classic double, triple, and triple triple (nine) patty, and rich, thick milkshakes made the old - fashioned way by hand, using only fresh milk and hand - dipped ice cream.

Wayback offers rich, thick milkshakes made the old - fashioned way by hand, using only fresh milk and hand - dipped ice cream.

Wayback Burgers offers burgers made from 100 percent fresh, never frozen ground beef, cooked to order, available as a single, classic double, triple and triple triple (nine) patty, and rich, thick milkshakes made the old - fashioned way by hand, using only fresh milk and hand - dipped ice cream.

Jack's Old Fashioned thick holiday milkshake is back and tastier than ever with real ice cream, Oreo cookies and cool peppermint flavor.

The Arctic Ocean continually loses thick, old ice, the kind that easily survives a warm summer, as currents sweep it out the Fram Strait, east of Greenland.

«In recent years Arctic pack ice has formed progressively later, melted earlier, and lost much of its older and thicker multi-year component,» says Anthony Fischbach of the US Geological Survey (USGS) and one of the research team.

This ice will lie next to the northern coasts of Greenland and the Canadian Arctic archipelago, the region where the oldest and thickest ice now occurs.

A big «hole» appeared in August in the ice pack in the Beaufort and Chukchi seas, north of Alaska, when thinner seasonal ice surrounded by thicker, older ice melted.

Some analyses have hinted the Arctic's multiyear sea ice, the oldest and thickest ice that survives the summer melt season, appeared to have recuperated partially after the 2012 record low.

It has also decreased the amount of the oldest, thickest Arctic sea ice, leaving polar waters dominated by thinner ice that forms in the fall and melts in the summer.

Not so long ago, the Arctic Ocean was covered by thick ice several years old.

We might have been unlucky: natural variability might have accelerated ice loss by pushing old, thick ice out of the Arctic.

What remains at the end of the summer gets thicker over the following winter as new ice is added to the old.

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.

What the scientists think happened was that the traditionally older, thicker ice around Greenland and the Canadian archipelago «just didn't melt away as much as it usually would» during the cooler summer conditions, «and it kind of just remained over the summer melt season,» Tilling said.

The caves are rarely accessible in winter because ice isn't usually thick enough to support foot traffic, forcing visitors to wait until summer to visit them by boat (at which point they're just plain old caves).

The loss of thicker, older ice in general is a well - documented trend in the Arctic.

The Canadian Rockies tower over ice - blue glacial lakes and thick green pine forests before descending to vast prairies, home to old ranching and cowboy towns.

Thinner, young sea ice is more susceptible to being compressed by wind than is older, thicker sea ice.

Scientists were shocked in recent days to discover open water north of Greenland, an area normally covered by old, very thick ice.

We know new thin ice is more vunerable to weather than older thicker ice.

But much of that ice is flowing out of the Arctic Ocean — and the departure of older thicker ice by that route is one reason this summer will have a lot of open water up North, according to ice experts.

iow more than three quarters of the critically important historically «normal level» of thick, older ice is gone already!

In 1985, 45 % of the sea ice in the Arctic was thick, older ice, said NOAA Arctic scientist Emily Osborne.

We also lost more of the older (and thicker) ice out of Fram Strait this winter because of the positive winter AO.

One way or the other, it's clear that, by the end of the 1990s, the veneer of ice on the Arctic Ocean had shifted to a far more tenuous state, with ever less thick, years - old ice like the floes I camped on when I went with the team setting up the annual North Pole Environmental Observatory.

The total area covered by the thicker, older «multi-year» ice that has survived one or more summers shrank by 42 percent.

The pace of ice loss — both its extent and the amount of the older, thicker ice that survives from summer to summer — has been faster than most models predicted and clearly has, as a result, unnerved some polar researchers by revealing how much is unknown about ice behavior in a warming climate.

(i) Older, thicker multiyear ice continues to flush out of the high Canadian Arctic and depending on winter surface circulation, some of this ice may reach very close to the coast.

And, differ between «young» (frozen last winter) and old ice (many years old very thick ice).

The letter noted that the sharp recent reduction in the extent of sea ice, and particularly thick older sea ice, was far outpacing what had been projected by computer simulations.

The percentage of ice that was many years old, forming thick pancaked expanses, was at its lowest since satellite observations began 30 years ago.

The fate of sea ice in the Arctic Ocean is determined by a complicated mix of factors, including the pressure changes, with the biggest loss of old thick ice resulting more from a great «flush» of floes than melting, Dr. Rigor and many other scientists tracking the region say.

It's clear to a range of scientists that the enormous loss of old, thick ice carried on currents from the Arctic out past Greenland into the Atlantic Ocean in recent years is a major factor that has led to sharp summer melting.

The physical justification for this statement is based primarily on the loss of old, thick sea ice and the increased mobility of sea ice.

In addition to the loss of old thick sea ice, the increased mobility of sea ice in the Beaufort Sea is consistent with the high sea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, Vol.

The physical justification for this statement is based primarily on the loss of old, thick sea ice and the increased mobility of sea ice (less extensive, thinner ice is more mobile).

Sea ice less than one year old was somewhat thicker than has been observed in recent years, with a modal thickness around 1.8 m, after one of the coldest North American winters in recent years.

Compared to spring 2011, the old ice in the Beaufort Sea in May 2012 appears to be somewhat more consolidated and older overall (which typically implies thicker ice), with more ice of three years of age or greater and less first - year ice mixed in.

This estimate includes 2nd - and 3rd - year sea ice and covers only the central Arctic Basin, so the loss of older thicker sea ice is even greater (see also Comiso, 2011, J. Climate, Vol.

Relatively large expanses of older, multiyear ice were observed in the Beaufort Sea with a modal thickness around 3.6 m, which was also somewhat thicker than has been observed in this region recently.