Sentences with phrase «decade over sea ice»

Temperatures increased on average by almost one and a quarter (1.22) degrees Celsius (C) per decade over sea ice in the Arctic summer.

Not exact matches

Indeed, Arctic change in the last two decades has been profound — not just dwindling sea ice, but also noticeably increased precipitation, and thus snow cover, over Eurasia.

Sensors that have plumbed the depths of Arctic seas since 2002 have found warm currents creeping up from the Atlantic Ocean and helping drive the dramatic retreat of sea ice there over the last decade.

Two regions of the WAIS, the Amundsen and Bellingshausen seas, have experienced especially dramatic losses of ice over the last couple of decades.

The U.S. Department of the Interior Wednesday listed the polar bear as a threatened species under the Endangered Species Act (ESA) of 1973 based on evidence that the animal's sea ice habitat is shrinking and is likely to continue to do so over the next several 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.

Under these conditions, a disproportionately rapid retreat of summertime sea ice in the central Arctic Ocean over the course of the next few decades, followed by its complete disappearance — depending on how quickly CO2 levels rise — roughly 250 years from now, is to be expected.

At the same time, there is considerable public interest in dependable predictions concerning Arctic sea ice development over the next few decades, so as to have a basis for long - term strategic planning.

A release of methane in the Arctic could speed the melting of sea ice and climate change with a cost to the global economy of up to $ 60 trillion over coming decades, according to a paper published in the journal Nature.

But over the past decades, the melt season has grown longer and the average extent of Arctic sea ice has diminished, changing the game for many Arctic marine mammals — namely beluga, narwhal and bowhead whales; ringed, bearded, spotted, ribbon, harp and hooded seals; walruses; and polar bears.

The model simulates melting at the base of the Amundsen Sea ice shelves at current rates over several decades.

Antarctic sea ice levels have actually been increasing slightly over the past three decades, so this low is unusual.

A relatively small amount of melting over a few decades, the authors say, will inexorably lead to the destabilization of the entire ice sheet and the rise of global sea levels by as much as 3 meters.

A new review analyzing three decades of research on the historic effects of melting polar ice sheets found that global sea levels have risen at least six meters, or about 20 feet, above present levels on multiple occasions over the past three million years.

Scientists have decades of data documenting the bears, and Lentfer says that the bears» weights have been dropping over the past 25 years, indicating that they're having trouble hunting seals on sea ice.

Over the last decade, the Arctic Ocean has experienced record - breaking losses of sea ice in the summers.

A new study by scientists at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, and the University of California, Irvine, shows that while ice sheets and glaciers continue to melt, changes in weather and climate over the past decade have caused Earth's continents to soak up and store an extra 3.2 trillion tons of water in soils, lakes and underground aquifers, temporarily slowing the rate of sea level rise by about 20 percent.

The winter sea ice around Antarctica has grown slightly over the past few decades.

The extent of Arctic sea ice, which melts to its low each September, has steadily declined over the past three decades, as the chart below illustrates.

Although that is unlikely to happen for many thousands of years, the ice sheet has increasingly lost mass over the last two decades, and the glaciers that serve as its outlet to the sea are accelerating.

The findings suggest that Antarctic sea ice has fluctuated substantially through the last century, rather than experiencing the sort of steady trend seen in the Arctic over many decades.

The minimum Arctic sea ice has declined by a little over half since its maximum extent of the past three decades.

That estimate was based in part on the fact that sea level is now rising 3.2 mm / yr (3.2 m / millennium)[57], an order of magnitude faster than the rate during the prior several thousand years, with rapid change of ice sheet mass balance over the past few decades [23] and Greenland and Antarctica now losing mass at accelerating rates [23]--[24].

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.

Low maximum sea ice extent also occurred over periods of some decades (e.g., mid-seventeenth and mid-eighteenth centuries, early fifteenth and late thirteenth centuries), with absolute values in some cases as low as the twentieth century ones, but these periods were in no case as persistent as in the twentieth century. . .

So it seems you have a very conservative estimate from the CMIP ensembles, which are known to suffer from various weaknesses wrt sea ice, and which certainly don't capture the trends over the last decade or so.

There are some painful, and even dire, concerns expressed about the potential that Greenland ice sheets could be «entirely lost» if emissions continue at a business - as - usual pace; about the rate of sea - level rise increasing «faster and faster with time»; and about the planet's ice sheets likely becoming «more active» over coming decades than they have been over recent decades.

Over all, the pace of sea - level rise from the resulting ice loss doesn't go beyond about 1.5 feet per century, Dr. Pollard said in an interview, a far cry from what was thought possible a couple of decades ago.

Even though the observed ice loss has accelerated over the last decade, the fate of sea ice over the next decade depends not only on human activity but also on climate variability that can not be predicted.

The most exciting thing is we'll get a chance to see the relative strength of all of these over the next few years, and it will most interesting to compare the total decade of 2010 - 2019 to previous decades in terms of the trends in Arctic Sea ice, Global Temps, and of course, OHC.

As a result, the sea ice volume at its annual minimum has declined 75 % over the past three decades.

eg For over a decade now I have placed 2025 + / -2 yrs as a likely time for no summer sea ice followed by «shit hits fan» ongoing thereafter.

Very well: You predict that the loss of sea ice will halt and reverse over the next two decades.

(Note that Mr. Will questioned my use of that «many experts» shorthand, but used it himself; down below I'll later list some of the many experts I've consulted on sea ice over the last decade.)

We're not talking about day trading here, we're talking climate and long range trends like a steady decline in sea ice over decades, shrinking glaciers world - wide, deforestation, etc..

It is a very complex issue with no clear cut answers however as it is critical for polar bears to have both ice and water any reduction of sea ice is going to reduce the population over the next few decades.

With global GHG emissions and concentrations continuing to increase; with climate change intensifying changes in ecosystems, ice sheet deterioration, and sea level rise; and with fossil fuels providing more than 80 % of the world's energy, the likelihood seems low that cooperative actions will prevent increasingly disruptive climate change over the next several decades.

Of more relevance than attribution is the development of reliable forecasts of the Arctic sea ice over the next few decades, which clearly requires consideration and integration of all these processes.

Data taken over the past decade indicate that when a lot of Arctic sea ice disappears in the summer, the vortex has a tendency to weaken over the subsequent winter.»

There is also considerable observational evidence that arctic sea ice extent over the last few decades is much lower than it has been for at least a century prior to modern times.

Over the past three decades, the summer Arctic sea ice extent has declined roughly 40 percent, and the ice has lost significant volume, according to data from the Polar Science Center.

As most of you are aware, Arctic sea ice has shrunk dramatically over the last several decades, because of man - made global warming.

The thickness of Arctic sea ice has also been on a steady decline over the last several decades.

Arctic sea ice extent (SIE) has decreased over recent decades, with record - setting minimum events in 2007 and again in 2012.

It sounds like you have no clue about the details of sea ice loss over the past few decades, nor the most critical of all the metrics — see ice volume, which is directly impacted by the warmth of both the ocean water as well as the atmosphere.

In recent decades, much research on these topics has raised the questions of «tipping points» and «system flips,» where feedbacks in the system compound to rapidly cause massive reorganization of global climate over very short periods of time — a truncation or reorganization of the thermohaline circulation or of food web structures, for instance, caused by the loss of sea ice or warming ocean temperatures.

Arctic sea ice volume, area, and extent have been in long - term decline for decades, and this decline has accelerated over the past 5 years.

According to AMEG, here's how climate change in the Arctic has changed weather patterns: Over the past three decades, snow cover has been reduced by 17 - 18 % per decade and sea ice is declining fast because of human - induced global warming.

The current sea ice extent in the Greenland Sea (Figure 4) differs only a little from the previous years and as Gerland et al. point out, different mean positions of the ice edge over one to three decades do not show substantial differencsea ice extent in the Greenland Sea (Figure 4) differs only a little from the previous years and as Gerland et al. point out, different mean positions of the ice edge over one to three decades do not show substantial differencSea (Figure 4) differs only a little from the previous years and as Gerland et al. point out, different mean positions of the ice edge over one to three decades do not show substantial differences.

«Over the last couple of decades, the sea - level rise from the ice sheets has been about 0.6 mm / yr, from a reservoir of more than 60 meters, which is about the same as me going on a diet and losing 1/3 of one potato chip over a yOver the last couple of decades, the sea - level rise from the ice sheets has been about 0.6 mm / yr, from a reservoir of more than 60 meters, which is about the same as me going on a diet and losing 1/3 of one potato chip over a yover a year.