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.
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.
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.
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.
«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.
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.»
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 Scienc
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 Scienc
sea 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.
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 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).
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.
«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.
Abstract: Mid - to late - Holocene
sea - level records from low - latitude
regions serve as an important baseline
of natural variability
in sea level and global
ice volume prior to the Anthropocene.
Such fellowships have enabled Antarctic scientists to participate
in a range
of significant research including using
ice cores to determine proxies for the Southern Annular Mode, a molecular study
of Antarctic ostracods, and investigating particulate carbon and biogenic silica
in sea ice in both the Arctic and Antarctic
regions.
In this new regime, with a complete absence of sea ice and snow in the Northern Hemisphere, with rapid warming of the arctic region due to increased solar absorption, a jump in regional temps will occu
In this new regime, with a complete absence
of sea ice and snow
in the Northern Hemisphere, with rapid warming of the arctic region due to increased solar absorption, a jump in regional temps will occu
in the Northern Hemisphere, with rapid warming
of the arctic
region due to increased solar absorption, a jump
in regional temps will occu
in regional temps will occur.
Bentley, M.J., and Anderson, J.B., 1998, Glacial and Marine Geological Evidence for the Extent
of Grounded
Ice in the Weddell
Sea - Antarctic Peninsula
Region During the Last Glacial Maximum: Antarctic Science, v. 10, (3), p. 307 - 323Berkman, P.A. and Ku, T. - H.
«As a result
of the acceleration
of outlet glaciers over large
regions, the
ice sheets
in Greenland and Antarctica are already contributing more and faster to
sea level rise than anticipated,» he observed.
While it is often occurring
in remote
regions, ongoing change with the cryosphere has impacts on people all around the world:
sea level rise affects coastlines globally, billions
of people rely on water from snowpack, and the diminishing
sea ice that covers the Arctic Ocean plays a significant role
in Earth's climate and weather patterns.
This study is the latest
in a growing body
of research that suggests dwindling
sea ice and snow cover
in the polar
regions may be altering the weather over the continents
of the Northern Hemisphere.
In the long term, changes in sea level were of minor importance to rainfall patterns in north western Sumatra With the end of the last Ice Age came rising temperatures and melting polar ice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the world
In the long term, changes
in sea level were of minor importance to rainfall patterns in north western Sumatra With the end of the last Ice Age came rising temperatures and melting polar ice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the world
in sea level were
of minor importance to rainfall patterns
in north western Sumatra With the end of the last Ice Age came rising temperatures and melting polar ice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the world
in north western Sumatra With the end
of the last
Ice Age came rising temperatures and melting polar ice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the worl
Ice Age came rising temperatures and melting polar
ice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the worl
ice sheets, which were accompanied by an increase
in rainfall around Indonesia and many other regions of the world
in rainfall around Indonesia and many other
regions of the world..
In addition to the direct impacts of rapid Arctic warming — most notably the loss of sea ice — scientists also think that it could be having an indirect effect on weather patterns in the mid-latitude regions of the northern hemispher
In addition to the direct impacts
of rapid Arctic warming — most notably the loss
of sea ice — scientists also think that it could be having an indirect effect on weather patterns
in the mid-latitude regions of the northern hemispher
in the mid-latitude
regions of the northern hemisphere.
«As more Arctic
sea ice is lost
in the future, the warming
of the Arctic
region gets larger.
Such research is now becoming urgent as regional climate change is already impacting upon areas
of West Antarctica and the Antarctic Peninsula [30] and colonies
in this
region may already be affected by the consequent loss
of sea ice [8].
Neven's Arctic
Sea Ice Graphs shows which
regions are frozen solid at this time
of year and which are
in play.
People need to know what will be the immediate, the short and medium term «Impacts»
in people's lives as a result
of that Arctic
Sea Ice Loss — including the specific types
of likely «Impacts»
in the
region in which those people actually live and work.