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Latest Clouds Stories

f53d2183c9dfcf8ebe88990f8423ccab1
2010-08-12 08:24:42

Researchers demonstrate how honeycomb clouds exhibit self-organization Like shifting sand dunes, some clouds disappear in one place and reappear in another. New work this week in Nature  shows why: Rain causes air to move vertically, which breaks down and builds up cloud walls. The air movement forms patterns in low clouds that remain cohesive structures even while appearing to shift about the sky, due to a principle called self-organization. These clouds, called open-cell clouds that...

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2010-06-08 09:24:27

A lot of large particles of dust and pollen in the atmosphere may make your nose twitch, but they can lead directly to greater precipitation in clouds, Colorado State University atmospheric scientists have discovered for the first time. The amount of ice crystals necessary to form precipitation in clouds is linked to the abundance of larger aerosol particles in the atmosphere, according to a study by Paul DeMott and Anthony Prenni, research scientists in the Atmospheric Science department at...

297341a3f8148c1a4ff57b51dbcea4a21
2010-04-22 11:39:40

Native Americans used smoke signals to indicate danger, and a white plume is sent up by the Vatican when a new Pope is chosen. Now, a new research project by Tel Aviv University researchers and their colleagues shows that where there's "smoke" there may be significant consequences for local weather patterns, rainfall and thunderstorms. In a new study, Prof. Colin Price, head of Tel Aviv University's Department of Geophysics and Planetary Science, researched data on lightning patterns in the...

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2009-12-16 11:10:00

NASA's Aeronomy of Ice in the Mesosphere (AIM) satellite has captured five complete polar seasons of noctilucent (NLC) or "night-shining" clouds with an unprecedented horizontal resolution of 3 miles by 3 miles. Results show that the cloud season turns on and off like a "geophysical light bulb" and they reveal evidence that high altitude mesospheric "weather" may follow similar patterns as our ever-changing weather near the Earth's surface. These findings were unveiled Dec. 15 at the Fall...

bc9a3fe54aa8620986d3c3b44d6ca4321
2009-11-30 06:30:00

In an effort to alleviate the effects of a severe drought, Cuba had provided Venezuela with cloud seeding help. Hugo Chavez said Fidel Castro and Cuban president Raul Castro sent specialized equipment to the people of Venezuela to be used to seed clouds from planes. Chavez says, "We're bombarding clouds. We have some planes there, and some equipment that Fidel and Raul sent us." As his country heads into its dry season, Chavez is trying to squeeze more rain from the clouds. Reservoirs are at...

2009-06-18 15:17:00

HAMPTON, Va., June 18 /PRNewswire-USNewswire/ -- A NASA cloud observation project is on a 13-month adventure to help promote ocean health. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO ) S'COOL, Students' Cloud Observations On-Line, was invited by the Around the Americas project to circumnavigate North and South America aboard the Ocean Watch, a steel-hulled, 64-foot sailboat. Visiting 31 ports in 11 countries over the course of a year, Ocean Watch will promote public...

2009-01-12 10:26:00

HAMPTON, Va., Jan. 12 /PRNewswire-USNewswire/ -- A collaboration between students from around the globe and NASA atmospheric scientists who use student observations in cutting-edge climate research has reached a graduation-like benchmark - its 12th anniversary. (LOGO: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) NASA is marking the anniversary by inviting students everywhere to take part in Global Cloud Observation Day on Jan. 13, 2009. Students can make and report cloud...

2008-12-12 14:16:00

ANDALUSIA, Ala., Dec. 12 /PRNewswire-USNewswire/ -- Jill Smith, a Straughn Elementary School teacher, has teamed up with NASA Langley Research Center in Hampton, Va., to provide scientific observations that will help validate some of their most prominent satellite instruments. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Smith and her students are now participants in the S'COOL project (Students' Cloud Observations On-Line), an international effort in which teachers and...

2008-12-12 14:11:00

BROWNSBORO, Texas, Dec. 12 /PRNewswire-USNewswire/ -- Gina Byford, an 8th-grade science teacher at Brownsboro Junior High School, has teamed up with NASA Langley Research Center in Hampton, Va., to provide scientific observations that will help validate some of their most prominent satellite instruments. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Byford and her students are now participants in the S'COOL project (Students' Cloud Observations On-Line), an international...

e98f41cabf2c446657f5c92447ecc4261
2008-12-08 14:43:59

Research at the Delft University of Technology (The Netherlands) has led to better understanding of clouds, the unknown quantity in current climate models. Delft researcher Thijs Heus has tackled this issue with a combination of detailed computer simulations and airplane measurements. He charted data including cloud speed, temperature and the 'life span' of clouds to arrive at new observations. Interaction The behavior of clouds is the great unknown quantity in current climate models. To make...


Latest Clouds Reference Libraries

Weather Reference Library
2012-07-17 22:18:38

Evaluating one way of how clouds can form. To understand this method it’s important to understand a few terms. The first one is Cloud Condensation Nuclei. The CCN can consist of anything from dust, dirt, salt anything that is floating in the air. The second thing is moisture. There must be moisture present in the atmosphere to condense on the CCN to form a droplet. Next step to the process is what is known as collision and coalescence. This is the process of many CCN’s running...

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