Sentences with phrase «sea ice in some regions»

«We used actual satellite measurements of both albedo and sea ice in the region to verify this and to quantify how much extra heat the region has absorbed due to the ice loss.

Something that goes along with this change in atmospheric circulation is reduced sea ice in the region (while sea ice in Antarctica has been increasing on average, there have been significant declines off the West Antarctic coast for the last 25 years, and probably longer).

That's the equivalent of a missing area of sea ice almost four times the size of Colorado, and puts this year right in line with a trend of ever decreasing sea ice in the region as the climate warms.

The complete absence of multiyear sea ice in the region, confirmed by thickness surveys and local observations, is a first for the region in the past several decades.

Recent development of sea ice in the region can only improve that rating.

Each stage features peak or trough inventories of sea ice in a region.

Low heights in the Atlantic side suggest colder temperatures and less sea ice export, while north of Siberia winds are now offshore, which may reverse the persistence of sea ice in that region.

What causes the sea ice in this region to melt?

On November 30th, diplomats from the Department of State concluded 10 years of negotiations by finalizing a multilateral agreement to protect the central Arctic Ocean from overfishing, as sea ice in the region dwindles.

«We used actual satellite measurements of both albedo and sea ice in the region to verify this and to quantify how much extra heat the region has absorbed due to the ice loss.

Not exact matches

If one part of an ice shelf starts to thin, it can trigger rapid ice losses in other regions as much as 900 kilometres away — contributing to sea level rise

The fall of the temperature of the sea water is sometimes a sign of the proximity of ice, although in regions where there is an intermixture of cold and warm currents going on, as at the junction of the Labrador Current and the Gulf Stream, the temperature of the sea has been known to rise as the ice is approached.

The paper, to appear Sept. 14 in The Cryosphere, is the first to quantify the sea ice changes in each polar bear subpopulation across the entire Arctic region using metrics that are specifically relevant to polar bear biology.

Satellite data show that, between 1979 and 2013, the summer ice - free season expanded by an average of 5 to 10 weeks in 12 Arctic regions, with sea ice forming later in the fall and melting earlier in the spring.

Now, a new modeling study finds a link between these winters and the decline of sea ice in a part of the Arctic Ocean known as the Barents - Kara sea region, bordering Norway and Russia.

Cooperation is important because research and security in the Arctic region require comprehensive and long - term weather, ice, sea, and atmospheric observations and modelling.

Their instruments are zeroed in on the Amundsen Sea Embayment, a vast region rich in volcanoes, ice shelves and glaciers, some as big as Washington state.

After compiling 10 floe - scale maps of the ice from the Weddell, Bellingshausen, and the Wilkes Land regions of the continent, the researchers found that the sea ice thickness tended to be highly variable, with many ridges and valleys, they report online today in Nature Geoscience.

Likewise, the Antarctic silverfish — another sea ice - dependent species and once an important source of food for the Adélies around Palmer Station — is becoming increasingly scarce in the region.

«Polar regions have been changing very rapidly, providing data for our projections on sea ice, snow cover, ice sheets and sea level rise,» says David Vaughan of the British Antarctic Survey in Cambridge, UK, the lead author of the cryosphere chapter.

In previously ice - rich areas such as the Beaufort Gyre off the Alaskan coast or the region south of Spitsbergen, the sea ice is considerably thinner now than it normally is during the spring.

«If there were a link, it would be more likely to occur in fall [when the Arctic sea ice is at a low and the region is warm] than it would in January [when the Arctic is ice - covered and cold], so from that point of view, it's not a compelling candidate at this time of year,» Hoerling said.

Joughin's and Tulaczyk's paper, published in Science in 2002, documents an increase in ice mass for one region of the WAIS called the Ross Sea Sector.

The research concludes that for other changes, such as regional warming and sea ice changes, the observations over the satellite - era since 1979 are not yet long enough for the signal of human - induced climate change to be clearly separated from the strong natural variability in the region

«The study suggests that loss of sea ice not only has an effect on the environment and wildlife of the Arctic region but has far reaching consequences for people living in Europe and beyond.»

The scientists were able to use a test scenario in the Greenland Sea to demonstrate that ALES + returns water levels for ice - covered and open ocean regions which are significantly more precise than the results of previous evaluation methods.

A cloud front can be seen in the lower left, and dark areas indicate regions of open water between sea ice formations.

However, in recent years, the sea ice has retreated and with it the region of maximum heat exchange.

A possible cause for the accelerated Arctic warming is the melting of the region's sea ice, which reduces the icy, bright area that can reflect sunlight back out into space, resulting in more solar radiation being absorbed by the dark Arctic waters.

An unprecedented analysis of North Pacific ocean circulation over the past 1.2 million years has found that sea ice formation in coastal regions is a key driver of deep ocean circulation, influencing climate on regional and global scales.

But changes in sea level and ocean currents in the ice - covered regions of the Arctic and Antarctic in particular are very difficult to detect.

The publicly available report also divides the Arctic Ocean into 12 regions, and calculates the changes in the dates of spring sea ice retreat and fall freeze - up from NASA satellite images taken between 1979 and 2013.

«Eavesdropping on Bering Strait marine mammals: Researchers are eavesdropping on marine mammals within the Bering Strait via «passive acoustic monitoring» to observe changes in the ecology of the Pacific Arctic by documenting the use of this region by species previously excluded by sea ice.»

This line marks a deep ocean channel that remained water - filled even during past ice ages, when sea levels saw channels between other islands in the region dry out.

What they found was that local destabilization of the Amundsen Sea region of West Antarctica ultimately causes the entire ice sheet to fall into the ocean over several centuries to several thousands of years, gradually adding 3 meters to global sea levels, they report online today in the Proceedings of the National Academy of SciencSea region of West Antarctica ultimately causes the entire ice sheet to fall into the ocean over several centuries to several thousands of years, gradually adding 3 meters to global sea levels, they report online today in the Proceedings of the National Academy of Sciencsea levels, they report online today in the Proceedings of the National Academy of Sciences.

«The Arctic is clearly experiencing the impacts of a prolonged and intensified warming trend,» said the report's co-editor, Jackie Richter - Menge, a sea ice expert at the Army Corps of Engineers» Cold Regions Research and Engineering Laboratory in Hanover, N.H.

First of all, less sea ice is forming in the region, and secondly, oceanographic recordings from the continental shelf break confirm that the warm water masses are already moving closer and closer to the ice shelf in pulses,» says Dr Hartmut Hellmer, an oceanographer at the AWI and first author of the study.

Since the 1970s the northern polar region has warmed faster than global averages by a factor or two or more, in a process of «Arctic amplification» which is linked to a drastic reduction in sea ice.

The report also shows that warmer seas have resulted in a significant loss of ice in the Arctic region.

ESA's original mission to measure changes in ice sheets and sea ice in Earth's polar regions failed on October 8, 2005, when a software problem caused the commercial launch rocket to fail.

The dramatic retreat of Arctic sea ice in recent years is changing disease patterns, altering the local food web and lowering the region's ability to reflect sunlight, according to two new studies.

The region has set records for low sea ice levels and high temperatures in recent years.

The findings suggest that the Indo - Pacific area would see a 40 per cent increase in fisheries catches at 1.5 C warming versus 3.5 C. Meanwhile the Arctic region would have a greater influx of fish under the 3.5 C scenario but would also lose more sea ice and face pressure to expand fisheries.

As the paper suggests, one could be the evaporation of surface waters that have become exposed because of sea ice loss in the region, he added.

Interestingly, the Antarctic Peninsula supports extremely high krill biomass and predator densities in a region that experiences less sea ice than colder, adjacent regions of the Antarctic [6].

Climate change is pushing temperatures up most rapidly in the polar regions and left the extent of Arctic sea ice at 1.79 million square miles at the end of the summer melt season.

Consistent with observed changes in surface temperature, there has been an almost worldwide reduction in glacier and small ice cap (not including Antarctica and Greenland) mass and extent in the 20th century; snow cover has decreased in many regions of the Northern Hemisphere; sea ice extents have decreased in the Arctic, particularly in spring and summer (Chapter 4); the oceans are warming; and sea level is rising (Chapter 5).

The extreme warmth in the region sent sea ice dwindling to a new record low for January.

«Earth is losing a huge amount of ice to the ocean annually, and these new results will help us answer important questions in terms of both sea rise and how the planet's cold regions are responding to global change,» said University of Colorado Boulder physics professor John Wahr, who helped lead the study.

In his seminal 1982 book Climate, History, and the Modern World, the renown climatologist Dr. H.H. Lamb revealed that sea ice in the subarctic and Arctic regions was much less extensive during the Medieval Warm Period (9th - 13th centuries) compared to todaIn his seminal 1982 book Climate, History, and the Modern World, the renown climatologist Dr. H.H. Lamb revealed that sea ice in the subarctic and Arctic regions was much less extensive during the Medieval Warm Period (9th - 13th centuries) compared to todain the subarctic and Arctic regions was much less extensive during the Medieval Warm Period (9th - 13th centuries) compared to today.