Sentences with phrase «winter sea ice cover»

The top plot is the seasonal averages through 2009 plus the yearly average, and the bottom plot is average winter sea ice cover through 2010.

The satellite data released by NASA and the National Snow and Ice Data Center show that the maximum extent of the 2008 - 2009 winter sea ice cover was the fifth - lowest since researchers began collecting such information 30 years ago.

Marc Kaufman, «Decline in Winter Arctic Ice Linked to Greenhouse Gases,» Washington Post, 14 September 2006; Joséfino C. Comiso, «Abrupt Decline in the Arctic Winter Sea Ice Cover,» Geophysical Research Letters, vol.

A number of recent studies linking changes in the North Atlantic ocean circulation to sea ice extent led Yeager to think that it would also be possible to make decadal predictions for Arctic winter sea ice cover using the NCAR - based Community Earth System Model...

Recruitment is related to the winter sea ice cover from the previous year, as diminished sea ice cover reduces habitat available for over-wintering juvenile and adult krill and reduces the size of the food - rich marginal sea ice zone in summer.

Not exact matches

Up until 2007, sea ice systematically fluctuated between extensive cover in winter and lower cover in summer.

Arctic sea ice cover grows each winter as the sun sets for several months, and shrinks each summer as the sun rises higher in the northern sky.

Arctic sea ice cover grows each autumn and winter, and shrinks each spring and summer.

The area of the Arctic Ocean covered by sea ice usually hits its winter peak in early to mid-March, as the freeze season ends with the re-emergence of the sun above the horizon.

In the autumn adult krill migrate from offshore and continental shelf areas to inshore habitats where they remain through winter under the protective cover of sea ice [4].

The area covered by sea ice in the Arctic hit record lows through the winter of 2017.

Rather than projecting out to the mid-twenty-first century, it is clear that the Arctic Ocean already has crossed a threshold with open water during the summer and first - year sea ice during the winter covering more than 50 percent of its area.

China's coldest winter in 100 years, Baghdad's first snow ever, North America's greatest snow cover in 50 years, record levels of Antarctic sea ice and record cold in a number of countries in both hemispheres... makes Gore a two - faced hypocrite

According to Seager et al. (2002) THC appears to account for the North America vs. Europe winter temperature difference only in the highest latitudes, north of about 60 degrees N, due to the fact that the heat transport limits sea ice cover there.

Simple statistical analysis shows that the relationship between sea ice variability and the winter climate is not clear and is much weaker than between snow cover and winter climate.

Sea ice variability occurs near the Pole, which is too far north to have a direct impact on these waves but it could have an indirect impact on another phenomenon, such as snow cover or a regional atmospheric patter (which could then impact the winter AO).

There are subtle effects such as the planet losing more heat from the open sea than from ice - covered region (some of this heat is absorbed by the atmosphere, but climates over ice - covered regions are of more continental winter character: dry and cold).

The point here isn't that anybody can prove that there has never been this extent of Greenland melting at some prior time in the Holocene, but that all of these indicators taken together (Arctic temperatures, low sea ice extent in summer * and * winter, permafrost melting, decreased snow cover, Greenland melting) indicate that the Arctic as a whole really is warming in an exceptional way.

(57j) For surface + tropospheric warming in general, there is (given a cold enough start) positive surface albedo feedback, that is concentrated at higher latitudes and in some seasons (though the temperature response to reduced summer sea ice cover tends to be realized more in winter when there is more heat that must be released before ice forms).

Re 9 wili — I know of a paper suggesting, as I recall, that enhanced «backradiation» (downward radiation reaching the surface emitted by the air / clouds) contributed more to Arctic amplification specifically in the cold part of the year (just to be clear, backradiation should generally increase with any warming (aside from greenhouse feedbacks) and more so with a warming due to an increase in the greenhouse effect (including feedbacks like water vapor and, if positive, clouds, though regional changes in water vapor and clouds can go against the global trend); otherwise it was always my understanding that the albedo feedback was key (while sea ice decreases so far have been more a summer phenomenon (when it would be warmer to begin with), the heat capacity of the sea prevents much temperature response, but there is a greater build up of heat from the albedo feedback, and this is released in the cold part of the year when ice forms later or would have formed or would have been thicker; the seasonal effect of reduced winter snow cover decreasing at those latitudes which still recieve sunlight in the winter would not be so delayed).

So Adelie penguins are being pushed further south, seeking places where sea ice cover has not yet been affected by warming temperatures and shorter winters.

Since the level of Arctic sea ice set a new record low in 2007, significantly above - normal winter snow cover has been seen in large parts of the northern United States, northwestern and central Europe, and northern and central China.

A central topic will be teleconnections in the climate system, i.e. how a change in climate in one part of the globe (e.g. temperatures in the Atlantic or shrinking sea ice cover in the Arctic) can influence climate on other parts of the globe (e.g. Eurasian winter temperatures), and how we can use this information to improve regional climate prediction and therefore regional climate service.

Arctic sea ice cover grows each winter as the sun sets for several months, and shrinks each summer as the sun rises higher in the northern sky.

Arctic sea ice cover as of Wednesday reflects had already begun to slowly recede two weeks after it had reached its maximum extent for the winter of 2016 - 17 on March 7, when it reached 5.57 million square miles (14.42 million square kilometers).

The majority of the winter warming is associated with changes in sea ice cover even though the sea ice declines at this time of the year are relatively small.

Progress in understanding this connection has converged on two key factors: (1) the variability of autumn snow cover in Eurasia, and (2) the variability of sea ice coverage in the Barents - Kara Sea during late fall and early wintsea ice coverage in the Barents - Kara Sea during late fall and early wintSea during late fall and early winter.

Evidence suggests that the negative phase of the Arctic Oscillation was driven in part by warm air (air warmed by the dramatic seasonal loss of Arctic sea ice) 9 as well as by changes in snow cover over Eurasia driven by climate change.10 This event is part of an emerging trend in which a warming climate may paradoxically bring colder, snowier winters to northern Europe and the eastern United States.11

It is partly covered by sea ice throughout the year and almost completely in winter.

Whether it's a killer winter in South America, increased snow cover globally, record Arctic sea ice recovery, recovering glaciers in the Alps, record high sea ice extent in Antarctica, extreme cold in southeast Europe, or 5 consecutive colder than normal European winters, just to name a few, the ominous signs of global cooling are compounding rapidly.

A few feet thick, sea ice covers one million square miles of ocean in summer and grows to six million square miles in winter, doubling the size of the continent.

The extent of Bering Sea ice cover this year has so far exceeded that of the previous two years, he added, because the extraordinary and record - setting low sea - ice formation of the past two winters mainly were due to a couple of short - term factors: a strong El Nino and an unusually persistent warm - water mass in the north Pacific commonly called «The Blob.&raqSea ice cover this year has so far exceeded that of the previous two years, he added, because the extraordinary and record - setting low sea - ice formation of the past two winters mainly were due to a couple of short - term factors: a strong El Nino and an unusually persistent warm - water mass in the north Pacific commonly called «The Blob.&raqsea - ice formation of the past two winters mainly were due to a couple of short - term factors: a strong El Nino and an unusually persistent warm - water mass in the north Pacific commonly called «The Blob.»

OSLO / WASHINGTON Winter sea ice on the Arctic Ocean covered the second smallest area on record this year, part of a thaw that is opening the region to shipping and oil exploration and may be disrupting weather far to the south, scientists said on Friday.

«In summer, the oceanic heat anomaly is enhanced by the ice — albedo feedback, but in winter the excess oceanic heat is lost to the atmosphere due to a lack of insulating sea ‐ ice cover.

So, Thoman says, the sea - ice uptick is more of a statistical hiccup than a departure from this winter's consistently below - average Arctic sea - ice cover, based on more than three decades of observations.

The area of the Arctic Ocean covered by sea ice naturally waxes and wanes with the seasons, reaching its peak at the end of winter and its nadir at the end of summer, usually in mid-September.

The occurrences of lunar migrations happen every winter at all sites, even under sea ice with snow cover on top.»

«leading to a dramatic decline in the amount of sea ice that covers the region each winter.»

A long - lived paradigm in polar oceanography is that arctic pelagic ecosystems, characterized by short food webs, remain in a dormant state throughout most of the winter season beneath the sea - ice cover, which can last 8 — 10 months in some regions.

The Arctic is warming much faster than most of the planet, leading to a dramatic decline in the amount of sea ice that covers the region each winter.

The sea ice in the Arctic Ocean is now nearing its winter maximum, but the effects of a February storm markedly illustrate the changes that have happened with the Arctic sea ice cover under the effects of climate change.

Following the record warm Arctic winter, the lowest sea ice extent at the seasonal maximum in the satellite era, and the lowest ice extent in the months of May and June; the current sea ice cover remains below normal (see Figures 6a and 6b).

Because the incoming and the outgoing flows, warm and cold respectively, lie side ‐ by ‐ side between Greenland and Scandinavia, an asymmetry is induced in the distribution of ice - cover on the Arctic Ocean; this is generally dense to the west of Fram Strait while, to the east of Spitzbergen, much of the Barents Sea — at similar latitudes — remains ice ‐ free even in winter due the eastward flow of warm Atlantic water.

The ice retreat in the East Siberian Sea will be late compared with the last year because the area is covered by thicker ice piled up by the winter convergence of sea iSea will be late compared with the last year because the area is covered by thicker ice piled up by the winter convergence of sea isea ice.

It also projected that shorter and warmer winters would affect sea ice cover, resulting in changes to animal behaviour and Inuit access to food sources.

The AER scientists took a different approach to reframe the question and, as a result, they demonstrate that snow cover in Asia and Arctic sea ice are related and key to understanding our recent streak of colder winters.»

As a result, the model predicts that sea ice loss will result in warming of over 2 degrees Celsius (4 degrees Fahrenheit) in Kansas in the winter, with a loss of 40 percent of the typical snow cover.

The maximum extent of Arctic sea ice cover this winter was the second - lowest since satellite record - keeping began, researchers said Friday.

Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation — Jaiser et al (2012) doi: 10.3402 / tellusa.v64i0.11595

Arctic sea - ice cover will diminish rapidly under global warming, but its rate of retreat in boreal winter shows large intermodel differences across the models involved in Phase 5 of the Coupled Model Intercomparison Project...