Sentences with phrase «summer ice increases»

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.)

Many ice pop producers immediately raised prices to adjust for higher sugar costs, but Ziegenfelder waited until after the summer selling season to increase the price of its pops.

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.

Scientists have examined ice cores dating back some 800,000 years and have documented numerous times when increases in summer insolation took place, but not all of them resulted in deglaciation to present - day ice volumes.

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.

Researchers have attributed glacial decline to increasing temperatures, which have reduced the period of glacial accumulation and extended the period of summer ice melting (ablation).

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 shelves.

With higher precipitation, portions of this snow may not melt during the summer and so glacial ice can form at lower altitudes and more southerly latitudes, reducing the temperatures over land by increased albedo as noted above.

Catastrophic ice - shelf collapsed tend to occur after a relatively warm summer season, with increased surface melting [12].

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.

To give another, more specific example, at a typical glacier on Mt. Baker, in Washington State, a summer temperature increase of 1 °C translates to a ~ 150 m increase in the altitude of the equilibrium line (the point where annual ice accumulation = annual loss), and a resulting ~ 2 km retreat of the glacier terminus.

In this scenario, the increase in boreal summer insolation melts enough NH ice to trigger a strong AMOC reduction, which cools the North at the expense of warming the South.

I think what Alastair is alluding to is the fact that, say by 2050 when the arctic ocean will conceivably be ice - free in the summer, the atmosphere will have a much higher relative humidity than it has currently because of the open air = water interface, so this will have a magnifying effect beyond just the feedback from increased CO2.

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

However, we can be confident that, given continued GHG increases, ice - free Arctic summers ultimately will become the norm.»]

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.

I've been to the Arctic three times for the newspaper since 2003 — visiting the North Slope, North Pole, and Greenland to examine what mix of human and natural forces is driving the warming and ice retreats and the implications of having increasing amounts of open water in summers in a region increasingly seen as a resource trove and shortcut for shipping.

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

Glaciers and ice caps in Arctic Canada are continuing to lose mass at a rate that has been increasing since 1987, reflecting a trend towards warmer summer air temperatures and longer melt seasons.

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.

Given the level of denialism in the face of glacial mass loss, plummeting Arctic summer ice cover, progressive collapse of ice shelves that have been stable for 6000 to 10000 years, northward, upward, and seasonally earlier movements of ecosystems and other phenological changes, increasing Greenland ice melt, and all the other direct observations of global warming, I think denialists will go to their graves believing it can't be happening.

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.

Increased melting in the warmer summer is causing the internal drainage system of the ice sheet to accommodate more melt - water, without speeding up the flow of ice toward the oceans, the journal Nature reports.

Glacial periods give way to interglacials on some occasions when the Northern Hemisphere's summer solar insolation (the amount of solar radiation received by Earth's surface) increases alongside corresponding decreases in ice volume and increases in temperature and atmospheric carbon dioxide (CO2).

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.

I strongly believe that the increased summer melts of Arctic ice are in part a result of black carbon from Asia coal burning landing on the ice and reducing its albedo (and greatly accelerating melt rates).

These methods have been significantly improved by fully coupling the hydrologic cycle among land, lake, and atmosphere.94, 95 Without accounting for that cycle of interactions, a study96 concluded that increases in precipitation would be negated by increases in winter evaporation from less ice cover and by increases in summer evaporation and evapotranspiration from warmer air temperatures, under a scenario of continued increases in global emissions (SRES A2 scenario).

27 January 2000: The Hektoria Glacier system is stable, but increased summer melting from climate warming in the 1980s and 1990s affected the glacier system in two ways: (1) a seasonal speedup from summer melt water percolating through the glacier ice to its base, and (2) initial retreat of the Larsen Ice Shelf due to the effects of melt ponds (downstream from this imagice to its base, and (2) initial retreat of the Larsen Ice Shelf due to the effects of melt ponds (downstream from this imagIce Shelf due to the effects of melt ponds (downstream from this image).

In fact it is a very risky target for all of us: so far, temperatures have increased by just.8 degree Celsius and we are already experiencing many alarming impacts, including the unprecedented melting of the Greenland ice sheet in the summer of 2012 and the acidification of oceans far more rapidly than expected.

Lake Superior summer water temperatures are increasing more rapidly than regional air temperatures: A positive ice - albedo feedback

Austin, J. A., and S. M. Colman, 2007: Lake Superior summer water temperatures are increasing more rapidly than regional air temperatures: A positive ice - albedo feedback.

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.

«A paper recently published in the journal Weather finds that global summer average sunshine [solar short - wave radiation that reaches Earth's surface] dimmed during the period 1958 - 1983 [prompting an ice age scare], but markedly increased from 1985 - 2010.»

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.