Sentences with phrase «of sea ice conditions»

However, scientists have used historical records of sea ice conditions to estimate sea ice extent before 1979.

«An outline of sea ice conditions in the vicinity of Iceland», Jokull 22: 1 - 11.

They may result from more tuning of sea ice conditions within the models, improved model parameterizations and processes, or some combination of the two.

• How can improved estimates of sea ice thickness help improve seasonal predictions of sea ice conditions?

Based on this plot, a classification of sea ice conditions into permanent sea ice, extended sea ice, seasonal sea ice (ice edge), and ice - free is possible.

Not exact matches

One is changed environmental conditions for a discrete subpopulation of the original population, such as when ice ages cause dramatic changes in sea levels, cutting species into subgroups.

Says Chad Jay, the report's lead author: «We're really in a phase of trying to see how the walruses respond to reduced sea ice conditions.

By mapping current conditions with the help of Inuit hunters as well as by compiling maps of the past based on oral histories and the memories of elders, the researchers hope to capture the Inuit's special understanding of sea ice.

Sea ice - associated decline in body condition leads to increased concentrations of lipophilic pollutants in polar bears (Ursus maritimus) from Svalbard, Norway.

The case of this one polar bear and the failure of her offspring to survive in the new environmental conditions of the Arctic doesn't bode well for the future of the species, especially as Arctic sea ice continues to retreat at a record pace.

If we compare the ice thickness map of the previous winter with that of 2012, we can see that the current ice conditions are similar to those of the spring of 2012 — in some places, the ice is even thinner,» Dr Marcel Nicolaus, sea ice physicist at AWI, said today at a press conference during the EGU General Assembly in Vienna.

The study compared weather patterns during low sea ice conditions as seen in recent years to weather patterns during high sea ice conditions typical of the late 1970s.

Under these conditions, a disproportionately rapid retreat of summertime sea ice in the central Arctic Ocean over the course of the next few decades, followed by its complete disappearance — depending on how quickly CO2 levels rise — roughly 250 years from now, is to be expected.

Scientists at the National Snow and Ice Data Center (NSIDC), University College London, University of New Hampshire and University of Washington analyzed 300 summer Arctic sea ice forecasts from 2008 to 2013 and found that forecasts are quite accurate when sea ice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaIce Data Center (NSIDC), University College London, University of New Hampshire and University of Washington analyzed 300 summer Arctic sea ice forecasts from 2008 to 2013 and found that forecasts are quite accurate when sea ice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaice forecasts from 2008 to 2013 and found that forecasts are quite accurate when sea ice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaice for the last 30 years.

The team, which includes Professor Baldwin, will lead innovative new research, which aims to advance current understanding of three key conditions that influence seasonal weather across the continent — the North Atlantic upper - ocean heat content, Arctic sea - ice, and the stratosphere.

Our study underlines that these conditions have led to a large loss of ice and significant rises in global sea level in the past.

A new NASA - led study has discovered an intriguing link between sea ice conditions and the melting rate of Totten Glacier, the glacier in East Antarctica that discharges the most ice into the ocean.

During the later period, when there was less sea ice, the whales dove significantly longer and deeper than in the earlier period — presumably in search of prey as the animals, in turn, changed their habits because of different ocean conditions brought on by sea ice loss.

This will allow us to get a much better characterization of the sea ice and other environmental conditions, especially in the Pacific Arctic.»

Lack of knowledge about the ice sheets and their behavior is the primary reason that projections of global sea level rise includes such a wide range of plausible future conditions.

At its height between 1960 and 1980, Polyarka was staffed by more than fifty working scientists, engineers, and technicians focused on measurements of surface weather, snow depth, sea ice, and conditions in the upper atmosphere.

Bacteria, however, have remained Earth's most successful form of life — found miles deep below as well as within and on surface rock, within and beneath the oceans and polar ice, floating in the air, and within as well as on Homo sapiens sapiens; and some Arctic thermophiles apparently even have life - cycle hibernation periods of up to a 100 million years while waiting for warmer conditions underneath increasing layers of sea sediments (Lewis Dartnell, New Scientist, September 20, 2010; and Hubert et al, 2010).

In previous years, Antarctic sea ice hit record highs, potentially due to changing ocean conditions linked to the melting of land - bound glaciers.

Current changes in the ocean around Antarctica are disturbingly close to conditions 14,000 years ago that new research shows may have led to the rapid melting of Antarctic ice and an abrupt 3 - 4 metre rise in global sea level.

At 3.42 million square kilometres, it may still sound large, but this small extent of Arctic sea ice could have profound long - term consequences, and it follows a long trend of low sea ice conditions.

Unfortunately, due to extremely adverse climatic conditions (primarily an abundance of sea ice), our team was only able to prospect a small area of one of our islands of interest, James Ross Island.

Toward colder extremes, as the area of sea ice grows, the planet approaches runaway snowball - Earth conditions, and at high temperatures it can approach a runaway greenhouse effect (8).

This new group of scientists find some weather disturbances were not from the El Nino, La Nina cycle, but apparently regulated by conditions in the Arctic — things like low sea ice, low or shorter season snow cover, and even «sudden stratospheric warming».

Aside from watching the CO2 (e) numbers, another meaningful direct measure of our plight is the condition of the Arctic sea ice.

Does it mean the first time the summer sea ice goes beneath this threshold or does it imply a probability of encountering low - ice conditions over a period of time?

This means that if the climatic conditions remain unaltered, then the melt of the Greenland ice will accelerate and sea level will rise by 5 metres.

The implications of considering Arctic sea - ice - free conditions for the transformation of the global energy system are severe.

The advantage of such partially - coupled models is that they can be driven by past atmospheric conditions and the simulations match well the observed sea ice variability, which is strongly forced by the atmosphere.

But before you read on, have a quick look at this short time - lapse video of sea ice and weather conditions in the central Arctic Ocean from early July through August 8, recorded by one of the two autonomous cameras set on the sea ice near the North Pole each spring by a research team from the University of Washington (the same folks I accompanied in 2003).

This together with the reduced sea ice conditions along the west coast of the AP (another climate change effect), is undoubtedly increasing the ship traffic in the area — and with it the likelihood of iceberg collisions.

I think these are simply features of global climate that are embedded and as predictable as other large features like hurricane patterns, the gulf stream, the jet stream, sea ice extent and mass, global glacial conditions, sea level etc..

The eventual demise of the summer sea ice is a common feature of nearly every climate model projection (the exceptions are models with very inappropriate initial conditions).

Now to contribute a single event to Global Warming, one has to look at the weather conditions, and if patterns are sighted which are tied to alteration of sea ice decline (our new atmosphere set up), we can connect the dots here too.

True enough, they might run out of ice — but under what sea level rise conditions do we regard 50 - 70 cm as loose change, down in the noise level?

The study starts with observations of eroding ice sheets spreading, cooler freshwater at both ends of the planet and geological hints of tempestuous conditions toward the end of the Eemian, that last interval between ice ages when global temperatures and seas were higher than now.

I'll be filing something soon on an international betting pool of sorts projecting sea ice conditions in September.

You can experience 41 days of conditions around the North Pole in 44 seconds, thanks to the web cams left behind by an international research team (funded by the National Science Foundation) that annually ventures northward to install and retrieve instruments on and under the drifting sea ice at the top of the world.

There is not a single example of a simulation of the coupled ocean - atmosphere - sea ice system that spontaneously generates a change as big as doubling CO2, in Holocene type conditions.

The main source of my Arctic comfort level — besides what I learned while camped with scientists on the North Pole sea ice — is the growing body of work on past variations * in sea ice conditions in the Arctic.

People interested in this post might be interested in polarbearsinternational (dot) org which has collared bear tracking and compare their locations in the Beaufort sea to the current condition of the Arctic sea ice such as at the National Snow and Ice data center, nsidc (dot) org or the University of Bremen maice such as at the National Snow and Ice data center, nsidc (dot) org or the University of Bremen maIce data center, nsidc (dot) org or the University of Bremen maps.

First is the identification of a runaway condition in outflow glaciers of the West Antarctic ice sheet that makes the IPCC prediction for year - 2100 sea level rise clearly obsolete.

«in Western Hudson Bay, the decline in population size, condition, and survival of young as a consequence of earlier breakup of the sea ice brought about by climate warming have all been well documented (Stirling et al., 1999; Gagnon and Gough, 2005; Regehr et al., 2005; I. Stirling and N.J. Lunn, unpub.»

The following video gives you a fascinating view of one patch of sea ice through 90 days, provided by a webcam left behind by researchers who annually set up camp near the North Pole to check ocean and ice conditions up close.

A strong negative or positive condition can powerfully influence weather around the northern half of the globe and the behavior of sea ice on the Arctic Ocean.

Having stood on the shifting sea ice near the North Pole once, I do feel the desire to be bipolar and go to Antarctic waters someday, despite conditions that will always make trips there adventure travel in the purest sense of that word.