Sentences with phrase «of ice clouds»

It is conceivable that anthropogenic aerosols emitted at the surface and transported to the upper troposphere affect the formation and properties of ice clouds.

Yang, P., M.G. Mlynczak, H. Wei, D.P. Kratz, B.A. Baum, Y.X. Hu, W.J. Wiscombe, A. Heidinger, and M.I. Mishchenko, 2003: Spectral signature of ice clouds in the far - infrared region: Single - scattering calculations and radiative sensitivity study.

Aircraft also emit water vapor during flight which can cause the formation of ice clouds, called contrails.

On the basis of its intended flight route, the Perlan glider might be able to provide the first direct observations of polar stratospheric clouds, a unique type of ice cloud that forms in the polar stratosphere and helps to deplete ozone, Gong adds.

Comparisons of a sequence of the fifth - generation Pennsylvania State University — National Center for Atmospheric Research Mesoscale Model (MM5) predictions and GOES level - 2B retrievals of ice cloud tops for the convectively active second mission period showed that the MM5 cirrus areal extent was somewhat greater than the GOES depictions.

Not exact matches

This drink that's reminiscent of bubble tea is made with a coffee jelly base, then topped with a caramel Frappuccino blended with milk, coffee, and ice, and finished with a whipped cream cloud.

Also, some believe (though I have doubts) that the pre-flood world did have a roof of some kind over it (ice, clouds...?).

Maybe it's a momentary fogging of the congregation with a dry - ice cloud of vapor on Transfiguration Sunday, bringing home the mountaintop text in a whole new way.

And, whimsy did surface with the dessert course when we ordered «The Cloud» — a flaming cotton candy dessert comprised of Angel food cake topped with white chocolate cremeux, strawberry ice cream, strawberry compote, and whipped cream all ensconced within a cloud of cotton cCloud» — a flaming cotton candy dessert comprised of Angel food cake topped with white chocolate cremeux, strawberry ice cream, strawberry compote, and whipped cream all ensconced within a cloud of cotton ccloud of cotton candy.

The whole affair is finished with a cloud of rich, chocolaty Italian meringue frosting, my favorite way to ice a cake.

For sake of staying neutral, we will say both New Zealand and Australia are to blame for the delicious Pavlova; an edible translation of sugar turned into cumulous clouds, it is one of the best low fat vehicles for seasonal fruit, whipped cream, sorbet, and ice cream.

Charged particles, or ions, of magnesium from the cosmic dust can trigger the formation of tiny ice crystals that help form clouds, a new analysis of Mars» atmosphere suggests.

«If we can understand the chemical complexity of these ices in the molecular cloud, and how they evolve during the formation of a star and its planets, then we can assess whether the building blocks of life should exist in every star system,» said Melissa McClure of the Universiteit van Amsterdam, the principal investigator on a research project to investigate cosmic ices.

But it's not clear which effect predominates in the Arctic, he explained, since different types of clouds have different effects on climate, depending on whether they're made of ice or snow, whether they're thick or thin, and how high they sit in the atmosphere.

The finding suggests the comet's surrounding cloud of gas and dust may largely be fed by underlying ices, rather than by gas streaming off its surface.

Genetic techniques had advanced considerably in the last two decades, so that it was possible to identify even a few ice nucleators like syringae out of thousands of microbes that might inhabit a cloud.

Dan Cziczo and colleagues of the Pacific Northwest National Laboratory in Richland, Washington, created artificial clouds in the laboratory to explore the ice nucleation efficiency of various particles.

Dozens of states and countries run cloud - seeding programs using artificial ice - nucleating compounds.

It is this that leads to more intense thunderstorms: lightning only occurs if clouds are electrically charged, and this only happens if there are lots of ice crystals.

And yet scientists also see clouds that are much warmer, even 10ºF, that are full of ice and gushing out rain or snow.

She estimates that airborne microbes contribute less than 1 percent of all cloud ice.

Corinna Hoose, a cloud physicist at the Karlsruhe Institute of Technology in Germany, thinks that the number of ice - forming cells that Christner found in snow is too low to make much difference.

As long as they don't form ice crystals, these clouds won't shed more than a few flakes of snow over the Sierras» 13,000 - foot peaks.

«This imaging was part of an experiment checking the opacity of the atmosphere at night in Curiosity's location on Mars, where water - ice clouds and hazes develop during this season,» said camera team member Mark Lemmon of Texas A&M University, College Station.

Cold comets are small and unspectacular, but when they heat up, the ice and dust that blow off catch sunlight, forming a round cloud (the head, or coma, of the comet) and long streamers (the tail).

Even as the importance of biological ice nucleation was being recognized by agricultural scientists, it still wasn't embraced by atmospheric scientists, who stuck by the traditional view that soot, or sea salt, or some as - yet - unidentified mineral in dust was seeding ice in clouds.

Researchers created ice crystals with a near - perfect cubic arrangement of water molecules, in order to better understand how high - altitude ice clouds interact with sunlight and the atmosphere.

The ability to make and study cubic ice in the laboratory could improve computer models of how clouds interact with sunlight and the atmosphere — two keys to understanding climate change, said Barbara Wyslouzil, project leader and professor of chemical and biomolecular engineering at The Ohio State University.

«When I look at what physically forms the ice in clouds, I'd say 80 percent of it has some sort of biological signature,» Prather says.

The aerosols catalyze the formation of ice in the clouds, which could increase precipitation, although more research needs to be done on that linkage, Creamean said.

When Prather and DeMott sampled clouds over the Caribbean island of Saint Croix in July 2011, they again saw signatures of both dust and cells in the ice.

But some scientists hypothesize that all lightning is born of snow that's just out of sight: Ice crystals in clouds collide and generate electricity.

«The icy small bodies warm up as they approach the Sun, and the ice sublimes to form a coma [a dense cloud of gas and dust particles around a nucleus] and often a tail, making the comets observable,» she explained.

Then, 715 meters down, the image suddenly went black, clouded by thick wisps of silt and clay that had been liberated from the ice as the drill melted its way through.

That frozen vapor quickly forms ice crystals that drop out of the cloud as snow.

Unlike Saturn's bright rings, which are made almost entirely of ice particles, Mars's rocky ring will be dark and largely invisible from Earth, although the cloud of orbiting Phobos bits will at first be dense enough to cast a shadow on the Red Planet's surface during some parts of the planet's orbit around the sun, the researchers say.

Found high in Jupiter's atmosphere, these clouds are probably made of ice crystals.

Neptune has cloud structures that follow banded paths too, but its clouds are made of ice.

Those techniques have led to everything from the development of catalysts that remove poisonous carbon monoxide from car exhaust to the understanding of how ice crystals in stratospheric clouds supercharge atmospheric chlorine's ability to destroy the planet's protective ozone layer.

The aircraft breaks free of the clouds, and a plane - shaped shadow slides across the ice sheet between crevasses more than 100 feet deep.

Most comets are bright with brilliant tails of evaporating ice, and started life in the Oort cloud on the solar system's edges.

But clouds could form around dirty ice at temperatures as high as — 123 ° C, Plane and colleagues report online March 6 in the Journal of Geophysical Research: Planets.

These bands, with alternating wind motions, are created by differences in the thickness and height of the ammonia ice clouds; the lighter bands rise higher and have thicker clouds than the darker bands.

These arcs, on the other hand, form when light hits the top of ice crystals — like those contained in some kinds of clouds — and is then refracted out through the side of the crystals.

As the probe drew nearer to its home planet, just a sliver of Earth was visible, but the flyby nonetheless revealed striking detail — a swirl of clouds above Antarctica is discernible, as is highly reflective ice near the South Pole.

«Precipitation depends on ice; it's very sensitive to ice in a cloud, so figuring out what forms ice [in clouds] is sort of the holy grail of the measurements we've been trying to do, and it's a very chemically selective process,» Prather said at the ACS meeting yesterday afternoon.

Prather said her team's research is going to investigate the earliest stages of this ice - forming process, trying to distinguish the different effects that different microbes and bacteria can have when they infiltrate a cloud.

But if scientists are able to gain a deeper understanding of which dust particles best form ice and which don't, they may be able to maximize precipitation when clouds do form and stave off future droughts like the one that has beset California recently (ClimateWire, Aug. 4).

«More of the cloud droplets form raindrops and fewer are left in the cloud to form ice crystals.

Among the findings is strong evidence for the existence of clouds of water or water ice, the first such clouds detected outside of our solar system.