Sentences with phrase «process ice scientists»

Not exact matches

«I was very happy to see this new work by Kite and Rubin that brings to the fore a process that had escaped notice: the pumping of water in and out of the deep fractures of the south polar ice shell by tidal action,» said Carolyn Porco, head of Cassini's imaging science team and a leading scientist in the study of Enceladus.

«It is a very good paper which provides valuable new insights about the physical processes controlling the change in reflectivity of the Greenland ice sheet and specifically its darkening over time,» said Eric Rignot, a senior research scientist at NASA's Jet Propulsion Laboratory who studies ice sheets but was not involved with the new study.

For the first time, scientists have obtained direct, quantifiable observations of cloud seeding for increased snowfall — from the growth of ice crystals, through the processes that occur in clouds, to the eventual snowfall.

This process is a function of the temperature, so in looking at the isotopic composition in the different dated layers of the ice, scientists can study the temperature of the past.

«By processing the historical archive acquired by the Danish during the last century, they were able to provide an estimation of the ice sheet contribution to sea - level rise since 1900, which was critically missing in the last IPCC report,» noted Jeremie Mouginot, a climate scientist at the University of California, Irvine.

Now, experiments by geoscientists from Brown and Columbia universities suggest that this process, called tidal dissipation, could create far more heat in Europa's ice than scientists had previously assumed.

That's a process playing out throughout the Southern Ocean, but scientists don't have a good grasp on it or how sudden changes like the loss of a huge hunk of ice will alter carbon uptake.

Scientists are working to understand their underlying processes, such as which particle surface properties encourage or discourage ice formation, called nucleation, so they can accurately simulate how, where, and when clouds are formed.

The information from the study helps improve scientists» understanding of the behavior of the ice sheet and what processes control the loss of ice, Beata Csatho, a geophysicist at the University of Buffalo in New York who was not involved with the work, said in a commentary published in the same issue of Nature.

Bassis, the ice sheet scientist at the University of Michigan, first described the theoretical process of marine ice - cliff instability in research published only a few years ago.

Meanwhile, a different physical process in the comet's smooth mid-section was causing water ice to vaporize and flow through porous material to escape as a cloud of water vapor at the same time (NASA news release, and page on «fluffy snowballs;» David Shiga, New Scientist, November 18, 2010; and Astronomy Picture of the Day).

You start with the typical «mad scientist's first chemistry set» process of adding water to powder packets to make «icing.»

But many scientists doubt, for all the drama, that this process will end up moving meaningful quantities of ice into the sea.

What scientists once thought was a fairly simple linear process — that is, a certain amount at the surface of an ice sheet melts each year, depending on the temperature — is now seen to be much more complicated.

Overall, scientists believe that Antarctica is starting to lose ice, but so far the process has not become as quick or as widespread as in Greenland.

To study the concept, NASA scientists used a numerical depiction of the physics of ice sheets to capture natural sources of heating and heat transport from freezing, melting and liquid water; friction; and other processes.

By Sreeja VN: Sizzling underwater glacial ice, as it melts into warmer sea water, creates one of the loudest natural marine environments, and the air bubbles that pop during the process could help scientists measure the rate of glacier melt and track fast - changing polar environments.

The US CLIVAR Greenland Ice Sheet - Ocean Interactions Working Group was formed to foster and promote interaction between the diverse oceanographic, glaciological, atmospheric and climate communities, including modelers and field and data scientists within each community, interested in glacier / ocean interactions around Greenland, to advance understanding of the process and ultimately improve its representation in climate models.

These regional trends together yield a small increase, so studying each region will help scientists get a better grasp on the processes affecting sea ice there.

«IceBridge has collected so much data on elevation and thickness that we can now do analysis down to the individual glacier level and do it for the entire ice sheet,» said Michael Studinger, IceBridge project scientist at NASA's Goddard Space Flight Center in Greenbelt, Md. «We can now quantify contributions from the different processes that contribute to ice loss.»

AGW climate scientists seem to ignore that while the earth's surface may be warming, our atmosphere above 10,000 ft. above MSL is a refrigerator that can take water vapor scavenged from the vast oceans on earth (which are also a formidable heat sink), lift it to cold zones in the atmosphere by convective physical processes, chill it (removing vast amounts of heat from the atmosphere) or freeze it, (removing even more vast amounts of heat from the atmosphere) drop it on land and oceans as rain, sleet or snow, moisturizing and cooling the soil, cooling the oceans and building polar ice caps and even more importantly, increasing the albedo of the earth, with a critical negative feedback determining how much of the sun's energy is reflected back into space, changing the moment of inertia of the earth by removing water mass from equatorial latitudes and transporting this water vapor mass to the poles, reducing the earth's spin axis moment of inertia and speeding up its spin rate, etc..

Of course, calving is a natural process for icebergs, but scientists are divided over the cause of Larsen C calving due to the sheer volume of ice that broke off.

Since to me (and many scientists, although some wanted a lot more corroborative evidence, which they've also gotten) it makes absolutely no sense to presume that the earth would just go about its merry way and keep the climate nice and relatively stable for us (though this rare actual climate scientist pseudo skeptic seems to think it would, based upon some non scientific belief — see second half of this piece), when the earth changes climate easily as it is, climate is ultimately an expression of energy, it is stabilized (right now) by the oceans and ice sheets, and increasing the number of long term thermal radiation / heat energy absorbing and re radiating molecules to levels not seen on earth in several million years would add an enormous influx of energy to the lower atmosphere earth system, which would mildly warm the air and increasingly transfer energy to the earth over time, which in turn would start to alter those stabilizing systems (and which, with increasing ocean energy retention and accelerating polar ice sheet melting at both ends of the globe, is exactly what we've been seeing) and start to reinforce the same process until a new stases would be reached well after the atmospheric levels of ghg has stabilized.

Scientists use models to simulate sea ice processes.

http://earthobservatory.nasa.gov/IOTD/view.php?id=83672 http://www.nytimes.com/2014/05/13/science/earth/collapse-of-parts-of-west-antarctica-ice-sheet-has-begun-scientists-say.html It will add about 10 feet according to an interview with one of the scientists involved; but over a long time and fairly vague time frame, unless reinforcing processes (carbon release from melting permafrost, shallow ocean bottom warmingn in the form of methane from clathrates), a major reduction in earth's albedo from permafrost, net ice sheet, and total sea ice, continue to increasingly accelerate the process.

Climate scientists study icebergs as they break up for clues to the processes that cause ice shelf collapse.

Among the global - scale tipping points identified by earth scientists are the collapse of large ice sheets in Greenland and Antarctica, changes in ocean circulation, feedback processes by which warming triggers more warming, and the acidification of the ocean.h

By improving our grasp on the processes that lead an iceberg to break up, scientists hope to gain insight into ice shelf disintegration.

Glaciers Sizzle, Squirt Bubbles When Melting To Create Loudest Marine Environment; These Sounds Could Help To Measure Ice Melt By Sreeja VN: Sizzling underwater glacial ice, as it melts into warmer sea water, creates one of the loudest natural marine environments, and the air bubbles that pop during the process could help scientists measure the rate ofIce Melt By Sreeja VN: Sizzling underwater glacial ice, as it melts into warmer sea water, creates one of the loudest natural marine environments, and the air bubbles that pop during the process could help scientists measure the rate ofice, as it melts into warmer sea water, creates one of the loudest natural marine environments, and the air bubbles that pop during the process could help scientists measure the rate of...

In light of trends showing a likely 3 °C or more global temperature rise by the end of this century (a figure that could become much higher if all feedback processes, such as changes of sea ice and water vapor, are taken into account) that could result in sea level rises ranging from 20 to 59 cm (again a conservative estimation), Hansen believes it is critical for scientists in the field to speak out about the consequences and rebuke the spin offered by pundits who «have denigrated suggestions that business - as - usual greenhouse gas emissions may cause a sea level rise of the order of meters.»

Two teams of scientists say the long - feared collapse of the West Antarctic Ice Sheet has begun, kicking off what they say will be a centuries - long, «unstoppable» process that could raise sea levels by as much as 15 feet.