Sentences with phrase «summer sea ice increasing»

Indeed, the record - breaking losses in the past couple of years could easily be due to natural fluctuations in the weather, with summer sea ice increasing again over the next few years.

Not exact matches

That half a degree is the difference between low - lying island states surviving, or Arctic ice remaining over the North Pole in summer, or increasing the risk of losing the Western Antarctic Ice Sheet or Greenland ice sheet (either one of which implies an eight - metre sea level risice remaining over the North Pole in summer, or increasing the risk of losing the Western Antarctic Ice Sheet or Greenland ice sheet (either one of which implies an eight - metre sea level risIce Sheet or Greenland ice sheet (either one of which implies an eight - metre sea level risice sheet (either one of which implies an eight - metre sea level rise.)

Substantial reductions in the extent of Arctic sea ice since 1978 (2.7 ± 0.6 percent per decade in the annual average, 7.4 ± 2.4 percent per decade for summer), increases in permafrost temperatures and reductions in glacial extent globally and in Greenland and Antarctic ice sheets have also been observed in recent decades.

The results do suggest however that if sea ice loss continues as it has over recent decades, the risk of wet summers may increase.

Data collected by ship and model simulations suggest that increased Pacific Winter Water (PWW), driven by circulation patterns and retreating sea ice in the summer season, is primarily responsible for this OA expansion, according to Di Qi, the paper's lead author and a doctoral student of Liqi Chen, the lead PI in China.

The study found that loss of Arctic sea ice shifts the jet stream further south than normal resulting in increased rain during the summer in northwest Europe.

There has been a huge increase in the amount of sea ice melting each summer, and some are now predicting that as early as 2030 there will be no summer ice in the Arctic at all.

As a result of atmospheric patterns that both warmed the air and reduced cloud cover as well as increased residual heat in newly exposed ocean waters, such melting helped open the fabled Northwest Passage for the first time [see photo] this summer and presaged tough times for polar bears and other Arctic animals that rely on sea ice to survive, according to the U.S. Geological Survey.

Since IPCC (2001) the cryosphere has undergone significant changes, such as the substantial retreat of arctic sea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelvsea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelvSea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelves.

In contrast, the scenario in Fig. 5A, with global warming peaking just over 1 °C and then declining slowly, should allow summer sea ice to survive and then gradually increase to levels representative of recent decades.

As to the melting of sea ice, the theory has predicted summer melt would increase on average over time.

Even with the increasing summer retreats of sea ice, which climate scientists say are being driven in large part by global warming caused by humans....

Although again I challenge you to name even five polar scientists who do not think human - caused global warming is the dominant cause of «the increasing summer retreats of sea ice.»

But as a starting point, I'll propose now — and I'll change this if they disagree — the names of some leading scientists in this field who would NOT say there is sufficient evidence to conclude that human - caused global warming IS the main cause of increasing summer retreats of sea ice (although they would say there is strong likelihood that it will eventually dominate):

Even with the increasing summer retreats of sea ice, which polar scientists say probably are being driven in large part by global warming caused by humans....

The retreat of sea ice from the shores in summer to an unprecedented distance is fostering erosion of the shore and increasing radically the amount of swimming bears must do to maintain their accustomed life partly on and partly off dry land.

In addition, with the increase in summer melting of Arctic sea ice, human activity is increasing.

Even with the increasing summer retreats of sea ice, which climate scientists say are being driven by global warming caused by humans....

There was an eruption of assertions in recent days that the increasing summer retreats and thinning of Arctic Ocean sea ice might be a result not of atmospheric warming but instead all the heat from the recent discovered volcanoes peppering the Gakkel Ridge, one of the seams in the deep seabed at the top of the world.

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).

I have predicted that artic sea ice extent this summer will increase greatly because sea ice extent is greatly affected by past land temperatures, which have been unusally low since November (My 279, and responses 279 & 280).

If, as seems likely, the arctic sea ice loss worsens in coming summers, we will get rain in increasing amounts on increasingly large areas of Greenland.

This warming means that the sea ice, which naturally increases and decreases during the winter and summer seasons, is sticking around for 100 fewer days per year than it did in 1978.

Without that warm influence in the sub-Arctic, sea ice may come down past Norway to France — and that's a considerable percentage increase in whiteness, reflecting back summer sunlight that might help re-warm things.

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.

The loss of Arctic summer sea ice and the rapid warming of the continent could be altering the jet stream [3]-- and thus weather patterns — over North America, Europe and Russia, increasing the likelihood of extreme weather events and driving winter storms south.

As sea ice recedes with increasing spring and summer insolation, feeding grounds once again become available.

After the summer melt and the autumn frost, the sea ice properties are altered and the backscattering coefficient in increased.

From historic droughts around the world and in places like California, Syria, Brazil and Iran to inexorably increasing glacial melt; from an expanding blight of fish killing and water poisoning algae blooms in lakes, rivers and oceans to a growing rash of global record rainfall events; and from record Arctic sea ice volume losses approaching 80 percent at the end of the summer of 2012 to a rapidly thawing permafrost zone explosively emitting an ever - increasing amount of methane and CO2, it's already a disastrous train - wreck.

Even natural variability can impact medium term sea ice declines (or increases) but it is the long term constant external forcing from the rapidly increasing GH gas concentrations that will ultimately bring about the very likely ice free summer Arctic later this century.

Furthermore, the Arctic has warmed more than twice as fast as the global average, a phenomenon known as Arctic amplification, and stimulated by the combined increasing Arctic temperatures and rapid loss of sea ice in all seasons along with declining snow cover in the spring and early summer.

If cloud cover increases as sea ice decreases, that could offset the direct effect of the SIAF, especially if clouds increase in summer, when there is the most sun and the most sea - ice loss.

In regards to the first question, J. Stroeve (personal communication) notes that in the present warmer climate state, the tendency for a negative AO winter pattern to promote increased transport of ice into the western Beaufort / Chukchi seas — a pattern that historically has helped to reduce summer ice loss — actually enhances summer ice loss.

So an increased GHG effect should manifest in the polar regions in a decrease in winter sea ice extent and a smaller increase in summer sea ice extent relative to the winter maximum extent (ie a smaller annual range in sea ice extent).

El Niño events cause increases in seasonal Arctic sea ice melt during the following summer.

He found that prescribed sea ice loss in the model caused a southward shift of the summer jet stream and increased northern European precipitation.

At the workshop and from recent publications, there is near consensus that the 2007 sea ice minimum was due to the combination of almost two decades of preconditioning (thinning and increased ice export) plus a rare supportive weather pattern in summer 2007.

However, the increase in sea ice extent for 2009 does not exceed past interannual variability in a near - continuous, 30 - year downward trend in summer sea ice extent.

The volume of Arctic sea ice increased by around a third after an unusually cool summer in 2013.

«By contrast, the eastern Antarctic and Antarctic plateau have cooled, primarily in summer, with warming over the Antarctic Peninsula [C3 Ed: approximately 4 % of Antarctica land mass]... Moreover, sea - ice extent around Antarctica has modestly increased... In other words, the authors find that most of the Antarctic continent has cooled, rather than just the Southern Ocean...»

We could, of course, hit some bifurcation in the system where we lose all the summer Arctic sea ice or the Amazon forest, which is bad enough, and could possibly transition the climate to a different «solution» on a hysteresis diagram... this to me would represent more of a step-wise jump (akin to a larger bifurcation that you get in a snowball Earth as you gradually reduce CO2 or the solar constant); but ultimately these represent different behavior than «the interannual variability of the large scale dynamics will increase» or that for some reason the climate should be susceptible to more «flip flops» (as in the glacial Heinrich / D - O events), of which I am aware of no observational or theoretical support.

(4) The rapid decrease of summer sea - ice cover allows increasing numbers of killer whales to use the Canadian High Arctic as a hunting ground.

For example, the dramatic decline of summer sea ice in the Arctic — a loss of ice cover roughly equal to half the area of the continental United States — exacerbates global warming by reducing the reflectivity of Earth's surface and increasing the amount of heat absorbed.

Polar bears are one of the most sensitive Arctic marine mammals to climate warming because they spend most of their lives on sea ice.35 Declining sea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice.35 Declining sea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionSea region.45

In contrast, the scenario in Fig. 5A, with global warming peaking just over 1 °C and then declining slowly, should allow summer sea ice to survive and then gradually increase to levels representative of recent decades.

The small global mean change, however, is expected to create large problems in sensitive areas of the Earth system — rising sea level leading to increased coastal flooding, more heat waves and drought, and the disappearance of summer Arctic sea ice, to name a few.

This north / south asymmetry has grown since perihelion was aligned with the winter solstice seven to eight centuries ago, and must cause enhanced year - on - year springtime melting of Arctic (but not Antarctic) ice and therefore feedback warming because increasing amounts of land and open sea are denuded of high - albedo ice and snow across boreal summer and into autumn.

I forecast increased sea ice extent for summers 2013 & 14 as I knew the NAO would be more positive.

Population increase of polar bears on Svalbard and decrease in sea - ice cover in the Arctic region during summer probably results in more frequent interactions with reindeer on the archipelago.

Keep up the good work, I for one am sleeping better knowing you're debunking those climate change nutters, who, as far as I'm concerned, are probably just basing their conclusions on irrelevant things like record summer temperatures, melting ice - caps, rising sea levels, weather chaos, increasing crop failures, species extinction, ocean acidification... blah, blah, blah.