Sentences with phrase «ice at the poles in»

Not exact matches

Telescopes spied water in ice caps at the Red Planet's poles, as well as signs of an ancient ocean covering the northern hemisphere.

Radar signals bounced off a crater on the moon's south pole by the US Clementine spacecraft in 1994 hinted at the presence of water ice.

Despite this effect, the known ice loss at both poles suggests that embedded in the local rises is a signal of current climate change — researchers just have to tease it out.

Last week, Thompson's colleagues measured the ice levels at survey poles that they had inserted last year; more than a meter of ice had melted in 12 months, out of a total thickness of 20 to 50 meters.

«People had calculated that water ice would be stable at the pole, but no one knew whether it actually existed there,» says planetary scientist William Boynton of the University of Arizona in Tucson, who is in charge of the instrument that found the ice.

Because Mercury's axis of rotation doesn't tilt at all (which means there's no summer or winter) some deep craters at the poles may be in perpetual shadow, and that could protect any ice patches from the heat of the sun.

The relative thinness of the ice shell at the south pole could also allow a future space exploration mission to gather data, in particular using radar, which would be far more reliable and easy to obtain than with the 40 km thick ice shell initially calculated.

Since a thinner ice shell retains less heat, the tidal effects caused by Saturn on the large fractures in the ice at the south pole are no longer enough to explain the strong heat flow affecting this region.

An international team including researchers from the Laboratoire de Planétologie Géodynamique de Nantes (CNRS / Université de Nantes / Université d'Angers), Charles University in Prague, and the Royal Observatory of Belgium [1] recently proposed a new model that reconciles different data sets and shows that the ice shell at Enceladus's south pole may be only a few kilometers thick.

For starters, the orbiter beamed back incredibly detailed stereo photos of the surface, measured the ozone distribution in the planet's atmosphere, and confirmed the presence of water ice at the south pole.

Charon is dark gray and rich in water ice, because it is not massive enough to hold onto the brighter methane and nitrogen ices seen on Pluto — except, maybe, at Charon's pole.

Last Thursday, jubilant National Aeronautics and Space Administration researchers announced that the Lunar Prospector spacecraft had confirmed earlier indications that ice exists in potentially extractable quantities in the dark, cold regions at both of the moon's poles.

ICESat - II, which will track changes in ice cover at the poles, could launch as early as 2014.

Claudio Castelnovo, a postdoctoral physicist at the University of Oxford who co-authored one of the Science papers and also co-wrote a paper in Nature last year describing how monopoles might be realized in spin ices, explains that the compounds offer a peculiar combination of order and freedom that facilitates the dissociation of the poles.

Multiple observations indicate that the flowing water responsible for shaping and moving the rounded pebbles encountered in the vicinity of the rover landing area has long since been lost to space, though some of it may still exist deep below the surface of the planet at equatorial locations (water ice is known to exist near the surface at the poles).

This extraordinary storage ability could help explain NASA's detection in early March of 650 million tons» worth of ice at the moon's dark, cold north pole.

«Finding places where water is present and not just in the form of ice up at the poles is useful for planning future exploration.»

Water exists in abundance on Mars — as ice seen at the poles by the Mars Odyssey orbiter and frozen into the Martian soil.

But in December 2012, when the ice moon was at its farthest point from the gas giant, they caught a pair of plumes bearing clear signs of oxygen and hydrogen — the components of water vapor — shooting from near the southern pole.

His «we do not know of a time with permanent ice at the poles and CO2 above 1000pmmv» (except, of course, prior to the big thaw in snowball Earth), and the present rate of increase of atmospheric CO2 being c. 10x greater than previous mass extinctions as far as we know (albeit the total mass being less) are deeply worrying.

Polar amplification, in which temperatures at the poles rise more rapidly than temperatures at the equator (due to factors like the global atmospheric and oceanic circulation of heat from the equator to the poles), plays a major role in the rate of ice sheet retreat.

Now, giant cyclones at the planet's poles have been seen in greater detail than ever before — they are not only stunning, but unique from atmospheric storms of any other planet in the Solar System, even other gas and ice giants.

Regarding the possibility that human emission - related warming will prevent the next ice age, I read somewhere that technically we are still in an ice age, the inter-glacial part of it, and that an ice age is defined as when the Earth has permenent snow and ice at the poles.

It's fascinating to know that when the asteroid struck Earth, our planet was already in a hot time, with no ice at the poles.

These twins in space can measure changes of gravity in land, sub-surface waters, and ice at the poles.

With the rising levels of BPA and other plastic chemicals found in our groundwater, ocean water, and even buried under 30 feet of ice at the south pole, experts warn that these chemicals may be contributing to the rising health problems we are seeing worldwide.

I don't think the stunning pair of pole positions and lights - to - flag wins at Cadwell Park in the 1997 Mighty Mini Challenge cut much ice, but more modest success at the Nürburgring, Pikes Peak and Bonneville Speed Week clearly did something to convince them I'm not a complete muppet.

As the last ice age began, some 125,000 years ago, part of the water evaporated from the world's oceans and fell as snow at the poles and in the northern parts of the continents to slowly form ice caps and glaciers.

In Andrew Revkin's article today entitled «In Greenland, Ice and Instability», there is the quote: Eric Rignot, a longtime student of ice sheets at both poles for NASA's Jet Propulsion Laboratory, said he hoped the public and policymakers did not interpret uncertainty in the 21st - century forecast as reason for complacency on the need to limit risks by cutting emissionIn Andrew Revkin's article today entitled «In Greenland, Ice and Instability», there is the quote: Eric Rignot, a longtime student of ice sheets at both poles for NASA's Jet Propulsion Laboratory, said he hoped the public and policymakers did not interpret uncertainty in the 21st - century forecast as reason for complacency on the need to limit risks by cutting emissionIn Greenland, Ice and Instability», there is the quote: Eric Rignot, a longtime student of ice sheets at both poles for NASA's Jet Propulsion Laboratory, said he hoped the public and policymakers did not interpret uncertainty in the 21st - century forecast as reason for complacency on the need to limit risks by cutting emissioIce and Instability», there is the quote: Eric Rignot, a longtime student of ice sheets at both poles for NASA's Jet Propulsion Laboratory, said he hoped the public and policymakers did not interpret uncertainty in the 21st - century forecast as reason for complacency on the need to limit risks by cutting emissioice sheets at both poles for NASA's Jet Propulsion Laboratory, said he hoped the public and policymakers did not interpret uncertainty in the 21st - century forecast as reason for complacency on the need to limit risks by cutting emissionin the 21st - century forecast as reason for complacency on the need to limit risks by cutting emissions.

One other factor here is increased evaporation at the equator which has increased the salanity of tropical waters along with increased percipitation at the poles seems to be making the thermohaline system move faster which in turn carries move heat to the poles and hence increases polar ice melting and hence possibly a greater chance of slowdown of the thermohaline system.

Polar amplification, in which temperatures at the poles rise more rapidly than temperatures at the equator (due to factors like the global atmospheric and oceanic circulation of heat from the equator to the poles), plays a major role in the rate of ice sheet retreat.

Nobody quoted in the article says the pole will be ice free, certainly nobody at Boulder, nor even did «The Independent», the source of the article.

[ANDY REVKIN comments: The Antarctic has seen no change in the extent of floating sea ice in recent years, in stark contrast to the situation in the Arctic, and all of this shows the Earth's climate system, particularly at the poles, is not simple — and thus not likely to follow a simple trajectory under a greenhouse push from humans.

In it Dr McCarthy reported that there was no ice at the North pole in 200In it Dr McCarthy reported that there was no ice at the North pole in 200in 2000.

On Mr. Will's defense of his accuracy, particularly on trends in sea ice at both poles as they related to global warming, it's worth pointing out a few things.

Given that your link to the naval history account of the USS Skate's surfacing at the north pole skewered your claims about the possibility of the north pole having been ice free in 1958, I'll take door number two from the choices above.

In that case, the report was of the presence of some open water at the pole — which as the correction stated, is not that uncommon as ice floes and leads interact.

A new analysis of the dramatic cycles of ice ages and warm intervals over the past million years, published in Nature, concludes that the climatic swings are the gyrations of a system poised to settle into a quasi-permanent colder state — with expanded ice sheets at both poles.

In the meantime, the small global network of ice, climate and ocean specialists trying to make sense of ice behavior at both poles are — as always — working to use each year's data to refine their still crude models.

It is not that the polar regions are amplifying the warming «going on» at lower latitudes, it is that any warming going on AT THE POLES is amplified through inherent positive feedback processes AT THE POLES, and specifically this is primarily the ice - albedo positive feedback process whereby more open water leads to more warming leads to more open water, etc. *** «Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...&raquat lower latitudes, it is that any warming going on AT THE POLES is amplified through inherent positive feedback processes AT THE POLES, and specifically this is primarily the ice - albedo positive feedback process whereby more open water leads to more warming leads to more open water, etc. *** «Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...&raquAT THE POLES is amplified through inherent positive feedback processes AT THE POLES, and specifically this is primarily the ice - albedo positive feedback process whereby more open water leads to more warming leads to more open water, etc. *** «Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...&raquAT THE POLES, and specifically this is primarily the ice - albedo positive feedback process whereby more open water leads to more warming leads to more open water, etc. *** «Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...&raquat high northern latitudes...»

Therefore, the increase in sea ice is caused by increasing cold at the pole.

Sixthly, during the ice age, which amounts to 80 or 90 % of the time, there is no Arctic Ocean at all, the entire north pole covered in ice several miles thick.

In November, even CNN reported on the record - low ice extent at both poles.

We might learn more from looking more closely at the descent of White and his kind from «progressive» to authoritarian than we might from looking at charts depicting the extent of sea ice in the poles.

Typical temperature reconstructions for the late Pliocene however [see one at the top of this story - 3.3 - 3.0 Ma] already show an Earth in which a warmer climatic state is indeed [through for instance ice albedo feedbacks] relatively strong around the poles, and (on average) weaker around the equator, exactly the pattern that is monitored under the current climate warming.

For example, conditions at the poles affect how much heat is retained by the earth because of the reflective properties of ice and snow, the world's ocean circulation depends on sinking in polar regions, and melting of the Antarctic and Greenland ice sheets could have drastic effects on sea level.

One day, no matter what we do, this cool period we're in now will end and we'll have to contend with palm trees on the North Slope and in Siberial, and NO Ice at the poles.

The backdrop to the renewed interest in asserting territorial claims on the Arctic and Antarctic by states such as Canada, the United States, Russia and the United Kingdom is that global warming, and in particular the warming of oceans, is leading to accelerating erosion of the ice mass at both poles.

When the Earth is in its «Ice House» climate mode, there is ice at the polIce House» climate mode, there is ice at the police at the poles.

There have only been three coldhouse periods (i.e. with ice at the poles) in the past 550 million years (the time that multi-cell animal life has been thriving on the planet) and we are in the third one now.