Sentences with phrase «ice cover extent»

However, recent calving rates have been shown to be negatively correlated with ice cover extent, indicating population growth is faster when ice cover is reduced and feeding habitat is extended [20].

Not exact matches

The last seven years witnessed the seven lowest minimum extents since satellite observations began in 1979, and there was last a record high with Arctic ice cover two decades ago, according to federal data.

If the planet is covered by an immense amount of water, the pressure at the bottom of the ocean will increase to such an extent that water occurs in the form of «Ice VII,» which does not exist on Earth.

«This shift is characterized by the persistent decline in the thickness and summer extent of sea - ice cover and by a warmer, l

The new Arctic Now product developed by the Finnish Meteorological Institute shows with one picture the extent of the area in the Northern Hemisphere currently covered by ice and snow.

The mass media (to the limited extent they covered the issue) were confused, sometimes predicting a balmy globe with coastal areas flooded as the ice caps melted, sometimes warning of the prospect of a catastrophic new ice age.

The animation of satellite data shows the physical extent of the ice cover for each of those minimum dates, ending with the record low.

They then used the satellite record of Arctic sea ice extent to calculate the rates of sea ice loss and then projected those rates into the future, to estimate how much more the sea ice cover may shrink in approximately three polar bear generations, or 35 years.

This image shows a visualization of Arctic sea ice cover on Sept. 12, 2013, with a yellow line showing the 30 - year average minimum extent.

The Arctic's ice cover appears to have reached its minimum extent on September 10, 2016, according to scientists at the National Snow and Ice Data Center (NSIDice cover appears to have reached its minimum extent on September 10, 2016, according to scientists at the National Snow and Ice Data Center (NSIDIce Data Center (NSIDC).

Earlier this month — on 17 March — the extent of Arctic sea ice peaked at nearly 15 million square kilometers, covering an area roughly twice the size of Australia.

The study marks the first time that human influence on the climate has been demonstrated in the water cycle, and outside the bounds of typical physical responses such as warming deep ocean and sea surface temperatures or diminishing sea ice and snow cover extent.

At the end of the last glacial maximum, when ice sheets reached their maximum extent 20,000 to 25,000 years ago, the ice covering Antarctica was even thicker than it is today.

The area of the Arctic Ocean covered by sea ice in September, when the annual minimum occurs, was the sixth lowest extent in the satellite record, going back to 1979.

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).

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...

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.

According to the latest Piomas data, a combination of the smallest sea ice extent and the second - thinnest ice cover on record puts total volume of sea ice in November 2016 at a record low for this time of year.

Earlier this week, scientists confirmed the area of Arctic Ocean covered by sea ice — known as sea ice extent — reached a record low in November.

Arctic sea ice extent was below normal for the 11th consecutive April this year, covering an average of 5.7 million square miles (14.7 million square kilometers) 2.1 percent below the 1979 - 2000 average extent and the 15th smallest April extent since records began in 1979.

What I meant (what I thought you meant) by Chuvian runaway was a runaway of an extent more limited (covering a smaller range of temperatures that can't be at equilibrium) than the big ice - albedo and H2O - vapor greenhouse runaway feedbacks of snowball and «steamball» conditions.

Ice extent for the same month in 2007 covered 5.3 million square kilometers, a historic low.

Scientists at the University of Illinois, Urbana - Champaign, who monitor the area of floating ice, instead of the extent of ocean mostly covered with ice, charted a similar trend.

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.

Maue discussed how «two camps» of researchers claim to have increased predictability of such weather events over periods of a month or more by using clues either in the Arctic, related to the extent of sea ice and snow cover, or in the temperature of surface waters across the Pacific Ocean.

That was due to increased global moisture content, decreased global average cloud cover and decreased sea ice extent at high latitudes.

your evidence for Arctic ice concentration similar in extent or lower than current is 1) your personal experience 2) a 1952 ecyclopedia entry describing changing sea ice cover for one region of the Arctic.

When these factors combine in such a way that summers are cool and short enough that they fail to melt back the previous year's winter ice cover to the usual degree, the «permanent» (as in year round) ice extent in the north begins to grow and spread south.

All climate models tell us that it is the Arctic sea ice cover that declines first, and that Antarctic ice extent falls only later, and may even (as observed) temporarily increase in response to changing patterns of atmospheric circulation.

The IPCC said:» Ice extent data from Russian sources have recently been published (Polyakov et al., 2003), and cover essentially the entire 20th century for the Russian coastal seas (Kara, Laptev, East Siberian and Chukchi).

Specifically, I use a formula based on physics of energy absorption, using snow cover, and June ice extent / area numbers.

There are two ways to categorize the amount of ice: by measuring the extent (essentially the area of the ocean covered by ice, though in detail it's a little more complicated) or using volume, which includes the thickness of the ice.

Lastly, there is significant independent evidence for warming in the oceans, snow cover and sea ice extent changes.

Ice cap - A dome shaped ice mass, usually covering a highland area, which is considerably smaller in extent than an ice sheIce cap - A dome shaped ice mass, usually covering a highland area, which is considerably smaller in extent than an ice sheice mass, usually covering a highland area, which is considerably smaller in extent than an ice sheice sheet.

The influence of anthropogenic forcing has also been detected in various physical systems over the last 50 years, including increases in global oceanic heat content, increases in sea level, shrinking of alpine glaciers, reductions in Arctic sea ice extent, and reductions in spring snow cover (Hegerl et al., 2007).

Currently (as of July 19), the extent is within 600,000 km2 of that in 2012 and the ice cover has become diffuse (low ice concentrations) within the Beaufort Sea (Figure 10).

Now it's official: as of September 16, according to the National Snow and Ice Data Center, the sea ice covering the Arctic Ocean reached a record low minimum exteIce Data Center, the sea ice covering the Arctic Ocean reached a record low minimum exteice covering the Arctic Ocean reached a record low minimum extent.

Well it depends on whether you are talking about Climate Sensitivity (Charney sensitivity... which is modelled) or Earth System Sensitivity (where things like ice sheet extent, vegetation cover etc are regarded as able to respond quickly to warming).

Ice core data suggest that the Greenland Summit region was ice - covered during this period, but reductions in the ice sheet extent are indicated in parts of southern GreenlaIce core data suggest that the Greenland Summit region was ice - covered during this period, but reductions in the ice sheet extent are indicated in parts of southern Greenlaice - covered during this period, but reductions in the ice sheet extent are indicated in parts of southern Greenlaice sheet extent are indicated in parts of southern Greenland.

can i using the sea ice cover data in era iterim to explain how much the sea ice extent from one month to other month???

Center officials say the sea ice probably reached its maximum extent on March 7th, when it covered about 5 - and - a-half-million square miles of the Arctic Ocean, including portions of the Bering Sea that lie south of the Arctic Circle.

The range of ocean remaining frozen over the northern polar region reached its minimum extent for 2009 on September 12, when it covered 1.97 million square miles (5.1 million square km), and now appears to be growing again as the Arctic starts its annual cool - down, the National Snow and Ice Data Center reported.

Using satellites we can estimate both sea ice area, which is the area of the sea which is ice - covered, and ice extent, which is the area of ocean which has 15 % or more ice cover.

«However, ice loss continued north of the Laptev Sea, opening up a gap in the ice cover that reduced extent.»

The region's sea ice extent — defined by NSIDC as the total area covered by at least 15 percent of ice — varies from year to year because of changeable weather conditions.

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).

Because walrus avoid ice - covered waters where sea ice concentration is 80 % or greater, any heavy ice concentrations reduce the areal extent of walrus foraging habitat.

Although the Arctic Ocean is typically mostly covered by ice, both the thickness and extent of summer sea ice in the Arctic have shown a dramatic decline over the past thirty years, satellite measurements have found.

CERSAT distributes daily sea ice extent and concentration data (local percentage of the ocean surface covered by sea ice).

The sea ice extent measure is broader, including areas of ocean where ice covers 15 % of the surface area.