News tagged with water vapor

Oxygen isotopes improve weather predictability in Niger

For the African nation of Niger, the effect of seasonal atmospheric variability on the weather is poorly understood. Because most residents rely on local agriculture, improving the predictability of seasonal weather and precipitation ...

Space & Earth / Earth Sciences

created May 17, 2012 | popularity not rated yet | comments 0

New point for dew point

Peter Huang of the Sensor Science Division’s Temperature and Humidity group has devised a new humidity generator that enables dew-point measurements up to 98 °C – a substantial extension above ...

Physics / General Physics

created May 11, 2012 | popularity not rated yet | comments 0

A NASA weather 'Eye in the Sky' marks 10 years

For 10 years, it has silently swooped through space in its orbital perch 438 miles (705 kilometers) above Earth, its nearly 2,400 spectral "eyes" peering into Earth's atmosphere, watching. But there's nothing ...

Space & Earth / Earth Sciences

created May 04, 2012 | popularity 5 / 5 (1) | comments 0

Scientists use new method to zero in on source of tropical clouds

(Phys.org) -- High above the Earth, clouds too thin to see cover the tropics. Scientists at Pacific Northwest National Laboratory have found a creative technique to identify the clouds' origins. Using several ...

Space & Earth / Earth Sciences

created Apr 26, 2012 | popularity 4 / 5 (1) | comments 0

Devising a 'silver bullet' for measuring water use by plants

(Phys.org) -- Most gardeners can tell by rule of thumb how much water their tomatoes and carrots need, but taking an accurate reading of plants' actual water use is a very difficult problem.   Although ...

Space & Earth / Environment

created Apr 24, 2012 | popularity 5 / 5 (1) | comments 0

NASA selects science instrument upgrade for flying observatory

NASA has selected a science instrument upgrade to the Stratospheric Observatory for Infrared Astronomy (SOFIA) airborne observatory. The instrument, the High-resolution Airborne Wideband Camera (HAWC), will provide a sensitive, ...

Space & Earth / Space Exploration

created Apr 18, 2012 | popularity 5 / 5 (2) | comments 0

Is it snowing microbes on Enceladus?

There's a tiny moon orbiting beyond Saturn's rings that's full of promise, and maybe -- just maybe -- microbes.

Space & Earth / Space Exploration

created Mar 28, 2012 | popularity 4.8 / 5 (12) | comments 4 | with audio podcast

Cassini to make closest pass yet over Enceladus South Pole

(PhysOrg.com) -- NASA's Cassini spacecraft is preparing to make its lowest pass yet over the south polar region of Saturn's moon Enceladus, where icy particles and water vapor spray out in glittering jets. ...

Space & Earth / Space Exploration

created Mar 27, 2012 | popularity 5 / 5 (2) | comments 0

Cassini sees Saturn stressing out Enceladus

(PhysOrg.com) -- Images from NASA's Cassini spacecraft have, for the first time, enabled scientists to correlate the spraying of jets of water vapor from fissures on Saturn's moon Enceladus with the way Saturn's ...

Space & Earth / Space Exploration

created Mar 20, 2012 | popularity not rated yet | comments 3 | with audio podcast

Space Image: Enceladus, Saturn's moon

(PhysOrg.com) -- Below a darkened Enceladus, a plume of water ice is backlit in this view of one of Saturn's most dramatic moons.

Space & Earth / Space Exploration

created Mar 16, 2012 | popularity 5 / 5 (1) | comments 0

Physics sheds light on the role of humidity in ironing

Ironing increases the humidity of a piece of cloth by injecting water vapor in the form of steam. But how does the vapor affect the fabric? Until now, it was thought that its only effect was to soften the fibers. French researchers ...

Physics / Soft Matter

created Feb 24, 2012 | popularity not rated yet | comments 0

UA makes mirrors for world's largest telescope

(PhysOrg.com) -- The second of seven 27-foot diameter mirrors for the Giant Magellan Telescope was cast on Jan. 14 inside a rotating furnace at the UA's Steward Observatory Mirror Lab.

Space & Earth / Space Exploration

created Jan 18, 2012 | popularity 4.8 / 5 (5) | comments 1

Why do dew drops do what they do on leaves?

Nobel laureate poet Rabindranath Tagore once wrote, "Let your life lightly dance on the edges of time like dew on the tip of a leaf." Now, a new study is finally offering an explanation for why small dew drops ...

Chemistry / Materials Science

created Jan 11, 2012 | popularity 4 / 5 (2) | comments 0

Cassini data shows Saturn moon may affect planet's magnetosphere

Scientists have been puzzled by periodic bursts of radiation, known as the Saturn kilometric radiation (SKR), that occur in the planet's magnetosphere. These emissions occur at a rate that is close to, but ...

Space & Earth / Space Exploration

created Dec 31, 2011 | popularity not rated yet | comments 0

Jumping droplets take a lot of heat

Microscopic water droplets jumping from one surface to another may hold the key to a wide array of more energy efficient products, ranging from large solar panels to compact laptop computers.

Physics / General Physics

created Dec 12, 2011 | popularity 5 / 5 (6) | comments 0 | with audio podcast

Water vapor

Water vapor or water vapour (see spelling differences), also aqueous vapor, is the gas phase of water. Water vapor is one state of the water cycle within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice. Under normal atmospheric conditions, water vapor is continuously generated by evaporation and removed by condensation. Water vapor is a greenhouse gas along with carbon dioxide and methane.

For more information about Water vapor, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.

Related topics: cassini spacecraft