Sentences with phrase «of older sea ice»

Each winter, it inhales cold air and causes a freeze up, then in the summer, it exhales a breath of older sea ice from the high Arctic into the seas on its southern edge.

Those low years were due in part to the loss of older sea ice, which was replaced by younger (hence thinner) ice that was more susceptible to summer melt.

Major features are southwestward advection of older sea ice into the Beaufort Gyre and southwestward advection of different sea ice types toward Fram Strait in the Transpolar Drift.

An interesting feature in both images is the tongue of old sea ice (red) extending into the southern Beaufort Sea.

Not exact matches

Centre analysts have begun testing the inclusion of sea - ice data from a Japanese satellite, but that spacecraft — designed to last five years — is now five years old.

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.

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.

Researchers led by Ian Eisenman, a climatologist at the Scripps Institution of Oceanography in San Diego, California, discovered a mismatch between an older and a newer version of the same NASA sea - ice data set that occurred when a satellite sensor was replaced in December 1991.

Fetterer — who recently wrote a guest article for Carbon Brief on piecing together a record of Arctic sea ice back to 1850 — also says the study highlights how important it is to find and preserve old observations:

«You can totally turn off ocean circulation, have Arctic sea ice advance all the way across the North Atlantic, and you still will have a warmer climate during the Younger Dryas than the Oldest Dryas because of the carbon dioxide,» Carlson says.

The paper, entitled Polar Bears of Western Hudson Bay and Climate Change [2007], has been criticised for relying on old research and ignoring evidence that Arctic sea - ice is melting at a quickening pace.

Sea ice extent has dropped precipitously as has the amount of old ice, which is less prone to breakup.

That puts the oldest sea ice on the brink of extinction.

Environment; Miles of Antarctic ice are collapsing into the sea as scientists try to understand speed of change Dating and relationships issues between younger men and older women.

Scientists say sea ice in the Arctic shrank to an all - time low of 1.32 million square miles on Sept. 16, smashing old records for the critical climate indicator.

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National Snow and Ice Data Center This comprehensive National Snow and Ice Data Center Web site, useful for teacher reference or for older students, includes information on snow and ice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberIce Data Center This comprehensive National Snow and Ice Data Center Web site, useful for teacher reference or for older students, includes information on snow and ice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberIce Data Center Web site, useful for teacher reference or for older students, includes information on snow and ice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberice, ice sheets, ice shelves, and iceberice sheets, ice shelves, and iceberice shelves, and icebergs.

Nature is the oldest theme in art: whether it be cave paintings of buffalo herds, the Laocoön Group fighting the snake, the hortus conclusus in medieval representations of Virgin Mary or Giorgione's looming Tempest, Flemish Still Life paintings, Manet's idyllic Luncheon on the Grass, Caspar David Friedrich's Sea of Ice, Van Gogh's psychedelic Sunflowers, Max Ernst's surreal forests, the spiritual mountain sceneries of der Blaue Reiter, or Arte Povera's energy objects and Land Art's earth formations — the list is endless.

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-?)

If I assume surface melting of 1M / year over the interior, say 500e3 KM ** 2 due to warmer climate & darker ice surface (old wet ice versus clean dry snow) that would contribute 1.4 mm / year to sea levels.

The United States, despite having substantial scientific operations in Antarctica and seeing ever more activity in its Arctic waters, has been relying on a pair of aging, decades - old heavy icebreakers to maintain mobility in ice - cloaked seas.

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.

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

About 79 % of the Arctic sea ice is thin and only a year old.

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.

What is distinct about global warming is that the basics of 100 - year - old theory have stood the test of time (more CO2 = warming world = less ice + higher seas and lots of climate change).

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.

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, Vsea 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, Vsea 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, VSea 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, Vsea 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.

Thus, the data indicate a continued trend towards flushing of old multiyear ice out of Canadian Basin into the Beaufort and Chukchi Seas.

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.

Finds that these losses in the oldest ice now extend into the central Arctic Ocean and adjacent to the Canadian Archipelago; areas where the ice cover was relatively stable prior to 2007 and where long ‐ term survival of sea ice through summer is considered to be most likely

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.

There are degrees of everyone's positions here from those who think the IPCC is wrong because it is much too conservative through those who think the IPCC got it perfectly right to those who think the arctic sea ice has recovered because the record low level is now three years old through those who believe the GHE violates the laws of thermodynamics.

A new NASA study revealed that the oldest and thickest Arctic sea ice is disappearing at a faster rate than the younger and thinner ice at the edges of the Arctic Ocean's floating ice cap.

Varying thicknesses of sea ice are shown here, from thin, nearly transparent layers to thicker, older sea ice covered with snow.

One of the difficulties using charts based on in situ observations is that there was very little exploration poleward of the «marginal ice zone» (the area of partial sea ice cover near the ice edge), so in older reconstructions the ice concentration was often assumed to be 100 % beyond the marginal zone.

«Anecdotal data» is the term that climate scientists (IPCC, etc.) assign to what tony b calls «historical evidence» This can be old sea charts, notes by explorers, crop records, old chronicals of mines being covered by advancing ice and snow, etc..

Arctic air temperatures are increasing at twice the rate of the rest of the world — a study by the U. S. Navy says that the Arctic could lose its summer sea ice by next year, eighty - four years ahead of the models — and evidence little more than a year old suggests the West Antarctic Ice Sheet is doomed, which will add between twenty and twenty - five feet to ocean leveice by next year, eighty - four years ahead of the models — and evidence little more than a year old suggests the West Antarctic Ice Sheet is doomed, which will add between twenty and twenty - five feet to ocean leveIce Sheet is doomed, which will add between twenty and twenty - five feet to ocean levels.

H.H Lamb lists nine measurable effects including «Increasing spread of the Arctic ice sea ice into all the northernmost Atlantic and around Greenland, forcing the abandonment of the old sailing routes to Greenland which had been used from about A.D 1000 to 1300.»

Scientists dig deep into the rock and sand of the sea floor to sample Earth's climate history many millions of years ago, since the oldest ice cores go back only 850,000 years.

Sea ice extent only provides part of the picture, as some sea ice is much thicker or older than otheSea ice extent only provides part of the picture, as some sea ice is much thicker or older than othesea ice is much thicker or older than others.

The movement of old, thick sea ice to lower latitudes has a two-fold impact.

The latest ice age product (Figure 1), provided by Maslanik for June 21, 2010, shows the same lobe of old ice extending through the Beaufort Sea and into the Chuckhi Sea that was seen in the end of April product (see June report).

Reasoning for a decrease in sea ice extent from recent years, perhaps approaching new record - low minimum, focuses on the below - normal sea ice thickness overall, the thinning of sea ice in coastal seas, rotting of old multi-year sea ice, warm temperatures in April and May 2010, and the rapid loss of sea ice area seen during May.

Reasoning for a new record minimum focuses on the below - normal ice thickness overall, the thinning of sea ice in coastal seas, rotting of old multi-year sea ice, and the rapid loss of sea ice area seen during May.

Will much of this ice remain in the central basin to rebuild the area of old, perennial sea ice over the coming years?