Sentences with phrase «ice conditions as»

Near - real - time data do not receive the rigorous quality control that final sea ice products enjoy, but it allows us to monitor ice conditions as they develop.

The coupling of IP25 with phytoplankton biomarkers such as brassicasterol or dinosterol proves to be a viable approach to determine (spring / summer) sea ice conditions as is demonstrated by the good alignment of the PIP25 - based estimate of the recent sea ice coverage with satellite observations38.

Pre-season and summer sea ice conditions as well as the spring and summer atmospheric circulation are reviewed in the pan-arctic post-season report.

A regression - based forecast for September ice extent around Svalbard (an area extending from 72 — 85N and 0 — 40E), which uses May sea surface temperatures, the March index of the Arctic Oscillation, and April ice conditions as predictors, yielded a mean ice extent in September 2010 of 255,788 square kilometers around Svalbard.

The study compared weather patterns during low sea ice conditions as seen in recent years to weather patterns during high sea ice conditions typical of the late 1970s.

Not exact matches

One is changed environmental conditions for a discrete subpopulation of the original population, such as when ice ages cause dramatic changes in sea levels, cutting species into subgroups.

Just as fresh atmospheric conditions mean that the ice surface must first be tested afresh to see if it can be judged as safe, so our knowledge and working conclusions must be continually re-tested in the light of fresh data to see if we may still trust ourselves to them.

In nature, changes of environmental conditions arise from such sources as the melting of polar ice - caps, explosion of dwarf stars, the fall of night.

Neanderthals as a lost race of human beings specially adapted to ice age conditions.

Travel with an NHL team and you hear grumblings about things as mundane as the soap in the visitors» dressing room, but the griping these days about the condition of the chippy and rutty ice at many arenas is genuine.

As of this morning, the governor was continuing to urge people to avoid unnecessary travel, even though a travel ban had been lifted, saying there were dangerous black ice conditions on the roads.

«Our research shows for the first time that classical systems such as artificial spin ice can be designed to demonstrate topological ordered phases, which previously have been found only in quantum conditions,» said Los Alamos National Laboratory physicist Cristiano Nisoli, leader of the theoretical group that collaborated with an experimental group at the University of Illinois at Urbana - Champaign, led by Peter Schiffer (now at Yale University).

Sailors measured winds, temperatures, barometric pressure and cloud conditions as well as sea ice and animal sightings.

For bulk water samples, these conditions are described as «no man's land,» because ice nucleates before such temperatures can be reached.

Using laboratory experiments to study these conditions is difficult, as it is very hard to recreate the extreme pressures and temperatures found on ice giants, researchers say.

By mapping current conditions with the help of Inuit hunters as well as by compiling maps of the past based on oral histories and the memories of elders, the researchers hope to capture the Inuit's special understanding of sea ice.

The case of this one polar bear and the failure of her offspring to survive in the new environmental conditions of the Arctic doesn't bode well for the future of the species, especially as Arctic sea ice continues to retreat at a record pace.

Major climatic events such as ice ages ought to leave their imprint on life as species adapt to the new conditions.

«This dataset allows us to predict how soon we're likely to see ice free conditions as well as how often,» said Jahn.

For now, as I sit in my office with an iced coffee in hand and log on to Navigenics, I check out what I can do to prevent multiple conditions (as if it's a luxury): Exercise.

The scientists stressed the need for more study of the conditions at the bottom of the ice sheet because of a proposal published in the Bulletin of the Atomic Scientists in 1973 to use the ice sheet as a dumping ground for radioactive waste.

«But to accurately model how quickly the ice is going to flow or the rock to rebound, we need to understand the «boundary conditions» for ice models, such as heat flow from the mantle,» he said.

«If protective ice shelves were suddenly lost in the vast areas around the Antarctic margin where reverse - sloping bedrock (where the bed on which the ice sheet sits deepens toward the continental interior, rather than toward the ocean) is more than 1,000 meters deep, exposed grounding line ice cliffs would quickly succumb to structural failure as is happening in the few places where such conditions exist today,» the researchers point out.

Temperature versatility is important because increasing evidence documents dynamic and often unpredicted behavior of ice that could affect environmental conditions — as with glaciers on earth, for example — and explain the evolution of satellites» bodies in space, as with Jupiter's moon Europa and Saturn's Enceladus.

The finding, a new atmospheric mechanism that links Arctic melting to conditions farther south, suggests that calamities like the 2012 — 16 drought may become more frequent as Arctic ice continues to vanish.

But, as the plane's departure had showed, in these conditions even seemingly straightforward tasks, like melting a hole in the ice, often prove difficult.

Our measurements show that they actually shrank as cold, dry conditions of the ice age became more intense.

They're not the same at the end of the game as they are at the beginning, so the skip has to have a good understanding of how these ice condition [s] change and what, you know, which path you would take to curl more at the end of the game as opposed to beginning of the game and all sorts of things like that.

And the other thing that is really important is that the ice conditions change as the game goes on.

«These findings add to mounting evidence suggesting that there are sweet spots or «windows of opportunity» within climate space where so - called boundary conditions, such as the level of atmospheric CO2 or the size of continental ice sheets, make abrupt change more likely to occur.

Freezing conditions could become more likely: winter temperatures may even plummet to depths last seen at the end of the 17th century, a time known as the Little Ice Age.

In turn, we can see which animals were dispersing into new areas, particularly as an ice age was ending in the southern continents and environmental conditions were becoming more favorable for reptiles and amphibians.»

«It's kind of remarkable that it's as low as it is [this year], given that the weather conditions were not terribly optimal for ice loss,» Meier said.

Only within the last 10,000 years, after the ice age ended and relatively moist conditions returned to the arctic, did nutritious forbs yield to less nourishing plants such as graminoids and woody shrubs.

GOING, GOING... Warmer conditions in the Arctic are melting sea ice (as seen here near Barrow, Alaska).

A pioneering new study has explored how Arctic sea - ice loss influences the North Atlantic Oscillation (NAO) weather phenomenon, which affects winter weather conditions in Northern Europe, in places such as the UK, Scandinavia and the Baltic states.

During the later period, when there was less sea ice, the whales dove significantly longer and deeper than in the earlier period — presumably in search of prey as the animals, in turn, changed their habits because of different ocean conditions brought on by sea ice loss.

Other scientists show how robotic drones, called Seagliders, swoop under the ice to track the movement of the pack and how it changes as ocean conditions change.

Professor Poinar continues, «Mammoths were much better at adapting to new habitats than we first thought — we suspect that subgroups of mammoths evolved to deal with local conditions, but maintained genetic continuity by encountering and potentially interbreeding with each other where their two different habitats met, such as at the edge of glaciers and ice sheets.»

Bacteria, however, have remained Earth's most successful form of life — found miles deep below as well as within and on surface rock, within and beneath the oceans and polar ice, floating in the air, and within as well as on Homo sapiens sapiens; and some Arctic thermophiles apparently even have life - cycle hibernation periods of up to a 100 million years while waiting for warmer conditions underneath increasing layers of sea sediments (Lewis Dartnell, New Scientist, September 20, 2010; and Hubert et al, 2010).

As the map above — adapted from a 2016 Journal of Climate paper — demonstrates, this trend is projected to continue, threatening many of the winter activities that rely on cold conditions, including skiing, snowmobiling, ice fishing, and outdoor ice hockey.

Relict habitats (remnants of the last Ice Age more than 10 000 years ago) in Portugal are officially recognised as being in an inadequate condition and in decline.

«The big question is whether the ice sheet will react to these changing ocean conditions as rapidly as it did 14,000 years ago,» said lead author Dr Nick Golledge, a senior research fellow at Victoria's Antarctic Research Centre.

As the vast ice sheets that covered much of the northern hemisphere receded, human civilization blossomed, making the most of the relatively mild conditions that we still enjoy today.

What the scientists think happened was that the traditionally older, thicker ice around Greenland and the Canadian archipelago «just didn't melt away as much as it usually would» during the cooler summer conditions, «and it kind of just remained over the summer melt season,» Tilling said.

Large - scale surface temperature reconstructions yield a generally consistent picture of temperature trends during the preceding millennium, including relatively warm conditions centered around A.D. 1000 (identified by some as the «Medieval Warm Period») and a relatively cold period (or «Little Ice Age») centered around 1700.

Toward colder extremes, as the area of sea ice grows, the planet approaches runaway snowball - Earth conditions, and at high temperatures it can approach a runaway greenhouse effect (8).

We call this the Charney climate sensitivity, because it is essentially the case considered by Charney (1979), in which water vapor, clouds and sea ice were allowed to change in response to climate change, but GHG (greenhouse gas) amounts, ice sheet area, sea level and vegetation distributions were taken as specified boundary conditions.

They are comparing under nearly identical orbital conditions, and the ice is treated as a forcing, not a feedback.

Most modelling studies of this period do not treat ice sheet extent and elevation or CO2 concentration prognostically, but specify them as boundary conditions.