Sentences with phrase «ice depositing on»
Here's another statistic: If the CO2 in the atmosphere were to freeze out as dry ice depositing on the ground, the dry ice layer would only be about 7 millimeters thick.
http://www.realclimate.org/ Not exact matches
Each volcano's magnitude and its impact on climate can be estimated from the amount of sulfate deposited in the ice.
Many scientists think these permanently shadowed regions, such as the floors on impact craters in the Moon's polar regions, could hold large deposits or water ice.
The study notes that narrowing down that percent range requires particle accelerator experiments on water ice to more accurately gauge the number of chemical reactions that result per unit of energy deposited by cosmic rays and solar energetic particles.
Water ice and other deposits also have been identified in cold traps near the north pole on Mercury.
On the western side the ice cores showed deposits of PFASs initially increasing as they were used more and more in European industry in the 1980s, and then decreasing as industrial output changed in the early 2000s.
Then the researchers used an electron beam to carve away two squares of ice, exposing the tops of some nanotubes, and deposited a layer of palladium on top of this ice mask.
This ice age was followed by the formation of limestone deposits through bacteria, marking the return of life on Earth at more moderate temperatures.
Black carbon absorbs heat in the atmosphere and reduces the ability to reflect sunlight when deposited on snow and ice.
Where fractures reached the surface, this vapor could escape energetically, carrying with it ice and salt particles and depositing them on the surface.
Rime forms when droplets of water vapor deposit directly as ice on surfaces.
«The conditions on Ceres are right for accumulating deposits of water ice,» said Norbert Schorghofer, a Dawn guest investigator at the University of Hawaii at Manoa.
That base layer can warp and lift the ice above it, which is formed by snow deposited on the ice sheet's surface.
He and his colleagues assumed that when the ice was deposited, it was centered on the poles.
The movement of these large masses of ice also leaves distinct marks on the walls of valleys and in the form of deposits of glacial sediment.
Their findings indicated that twice as much soot was deposited on snow in winter compared with summer, meaning that the sunlight - absorbing soot likely caused greater melting of the Arctic ice cap during the winter.
«At Kima'Kho, we were able to map a passage zone in pyroclastic deposits left by the earliest explosive phase of eruption, allowing for more accurate forensic recovery of paleo - lake levels through time and better estimates of paleo - ice thicknesses,» says UBC volcanologist James K Russell, lead author on the paper published this week in Nature Communications.
«Based on the likely location of ice deposits during this period of Mars» history, and the amount of meltwater that could have been produced by Lyot ejecta landing on an ice sheet, we think this is the most plausible scenario for the formation of these valleys» said David Weiss, a recent Ph.D. graduate from Brown and the study's lead author.
In addition to water, organic molecules, which could have been deposited on the surface by crashing comets, somehow would have to get through the thick shells of ice for life to form, a situation that puts Saturn's geyser - spewing moon Enceladus at the top of Nimmo's list of potential spots for life.
Based on these figures, I suppose that the West Greenland ice melting was larger in the 1930 - 1950 period than in the 1985 - 2005 period... Alternative explanations may be that the Greenland ice melting has nothing to do with temperature, but with more insolation (less clouds), less precipitation, more soot deposit,...
«The assumption has been that surface ice on Mercury exists predominantly in large craters, but we show evidence for these smaller - scale deposits as well,» said Ariel Deutsch, the study's lead author and a Ph.D. candidate at Brown.
Similar small - scale ice deposits are thought to exist on the poles of the Moon.
«Adding these small - scale deposits to the large deposits within craters adds significantly to the surface ice inventory on Mercury.»
Knowing that these small - scale deposits exist, and that they're likely the source of the slightly brighter surface outside craters, could dramatically increase the ice inventory on Mercury.
Water is darker than snow, but dust as well as soot from wildfires can also be swept up from far off locales and deposited on the ice sheet.
Here we show that the East Greenland Ice Sheet existed over the past 7.5 million years, as indicated by beryllium and aluminum isotopes (10Be and 26Al) in quartz sand removed by deep, ongoing glacial erosion on land and deposited offshore in the marine sedimentary record.
In the first episode of a new JPL video series, we celebrate the 14th anniversary of the Opportunity rover, show you a recent panoramic view from the Curiosity rover, look at ice deposits spotted by the Mars Reconnaissance Orbiter and check out the latest test on the InSight lander, heading to the Red Planet in May 2018.
The Utopia Planitia region on the planet Mars has ice deposit that holds as much water as the Lake Superior.
Ice on Mars, the Moon, and certainly on hot Mercury, should disappear faster than comets deposit it today.
«This deposit is probably more accessible than most water ice on Mars, because it is at a relatively low latitude and it lies in a flat, smooth area where landing a spacecraft would be easier than at some of the other areas with buried ice,» researcher Jack Holt of the University of Texas said in a statement.
Nowadays, our everyday stress does not demand any extra expenditure of energy from us — so all of the ice cream, chocolate, and cookies that we eat while combating it get deposited in the form of shaky pounds on our waists, thighs, and bellies.
The Capital Region largely sits on clay and silt deposited by a lake that swallowed the area during the last Ice Age, said Andrew Kozlowski, an associate state geologist at the State Museum and director of the state Geologic Mapping Program.
Huge chunks of smooth, dazzlingly blue ice are deposited on the beach and with the changing tidal waters, you never quite know what the layout of the beach is going to be until you get there.
Swimming pool Rancho Bar and Restaurant Travel agency Car rental Spa Aerobic classes every day Ice / vending machines Complimentary newspaper in lobby Safe deposit box - nominal fee Truck / RV parking, Surfboard storage Free outdoor parking Meeting facilties Catering Photocopy services, nominal fee 24 - hours Complimentary breakfast buffet 24 - hour front desk Massage services Babysitting on request Free High - speed Internet wireless Baggage hold Safe deposit box Interior corridors 20 % non-smoking rooms available Doctor on - call Cable television Bus parking Water filtration system, bottled water available
-- forbid aircraft in the stratosphere, keeping it dry, removing contrails — forbid diesel shipping so black carbon isn't deposited on the ice — supplement nutrients that limit methanogens and photosynthesizers (stir up sediments?
It sounds like the ideal situation is a lot of sea ice to carry the wood, but no shore - fast ice to impede depositing it on the beach.
An ice - free ocean, and the extra sunlight implied by that, would have a significant impact on the microfossils that are deposited on the seafloor.
«Beneath Siberia's snow may lie geologic formations that hold vast deposits of fossil fuels, as well as mineral resources» as if they didn't have drills that get through ice and like Canada, prefer to work on ice than on mud.
Based on these figures, I suppose that the West Greenland ice melting was larger in the 1930 - 1950 period than in the 1985 - 2005 period... Alternative explanations may be that the Greenland ice melting has nothing to do with temperature, but with more insolation (less clouds), less precipitation, more soot deposit,...
The caribou dung included one 4,300 year example exposed by melting, which given known caribou habits may also have been deposited on ice.
First we have an example of caribou dung preserved between ice layers, and hence necessarily deposited on ice.
The rise of CO2 from 270ppm to now over 400ppm, the extent of equatorial and sub tropical deforestation, the soot deposits on the polar ice caps, the increase in atmospheric water vapour due to a corresponding increase in ocean temps and changes in ocean currents, the extreme ice albedo currently happening in the arctic etc, etc are all conspiring in tandem to alter the climate as we know it.
A simple rule of thumb is that each part per thousand of atmospheric CO2, when deposited uniformly on the surface of the Earth (the whole thing, not just the land) as densely packed dry ice, will be very close to one centimeter thick.
Sea ice, and the cold conditions it sustains, serves to stabilize methane deposits on and near the shoreline, [40] preventing the clathrate breaking down and outgassing methane into the atmosphere, causing further warming.
White ice crystals deposited on the surface of objects that have a temperature below the freezing point of water.
Because darker surfaces absorb more heat than lighter, more reflective ones, if enough soot is deposited on snow and ice it can accelerate melting.
Judith - Apart from the general anthro vs. natural disussion of sea ice, I'm always wondering: has anyone seriously considered / studied the possible anthropogenic contribution from NON-CO2 sources (black carbon soot / aerosol deposits on the ice surface, increasing the albedo, melting the ice faster in the sun)?
Black carbon deposited on the Arctic snow and ice, he says, will have only a minimal effect on its reflectivity.
Avery also disputes the scientific consensus on global warming, ascribing the warming to «sunspots,» purportedly based on information about ice cores and deep ocean sediment deposits.
This means that depending on how thick the last deposit of firn was, on recrystallisation to ice, it could have transformed itself into many thinner layers separated by the particulate layers.