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	Weather balloon - Wikipedia, the free encyclopedia
		A weather balloon is a balloon which carries instruments aloft to send back information on atmospheric pressure, temperature, and humidity by means of a small, expendable measuring device called a radiosonde.
		The balloon itself produces the lift, and is usually made of a highly flexible latex material.
		Weather balloons may reach altitudes of 40 km (25 miles) or more, limited by diminishing pressures causing the balloon to expand to such a degree (typically by a 100:1 factor) that it disintegrates.
	en.wikipedia.org /wiki/Weather_balloon (361 words)

	AllRefer.com - weather balloon, Meteorological Instrument (Meteorological Instruments) - Encyclopedia
		weather balloon, balloon used in the measurement and evaluation of mostly upper atmospheric conditions (see atmosphere).
		Information may be gathered during the vertical ascent of the balloon through the atmosphere or during its motions once it has reached a predetermined maximum altitude.
		A pilot balloon is a small balloon (diameter c.1 m/39 in.) whose ascent is followed visually to obtain data for the computation of the speed and direction of winds at different altitudes.
	reference.allrefer.com /encyclopedia/W/weatherb.html (425 words)

	Ballooning and Meteorology in the Twentieth Century
		Weather balloons are used daily to carry meteorological instruments to 20 miles (30 kilometers) and above into the atmosphere to measure temperature, pressure, humidity, and winds.
		Balloons can climb through the denser air close to the Earth to the thinner air in the upper atmosphere and collect data about wind, the different layers of the atmosphere, and weather conditions as they travel.
		The mylar super-pressure balloon does not expand as it rises, and it is sealed to prevent the release of gas as the balloon rises.
	www.centennialofflight.gov /essay/Lighter_than_air/meteorology/LTA13.htm (1351 words)

	National Weather Service Forecast Office - El Paso
		Weather balloons, which are made of latex or synthetic rubber (neoprene), are filled with either hydrogen or helium.
		A parachute, attached to the end of the balloon, allows the radiosonde to fall slowly to the ground at speeds less than 22 mph after the balloon bursts.
		Weather balloons are the primary source of data above the ground.
	www.srh.noaa.gov /elp/kids/balloon.shtml (464 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Weather balloons come in a variety of sizes or weights, giving better accuracy and control in how high a balloon will rise and how fast it will rise.
		While neoprene balloons are somewhat elongated and their tops tend to flatten when rising, providing a slower, less uniform rise rate.
		Typical lighter-than-air gases are used in weather balloons and may consist of hydrogen, helium, or natural gas.
	www.wrh.noaa.gov /mso/balloon.php (372 words)

	The UnMuseum - Balloons (Site not responding. Last check: 2007-11-07)
		Weather balloons at high altitudes are visible over a wide area and may catch the light of a setting sun and appear as brilliant dots in the darkening sky.
		The balloon, using hot air for lift, was constructed by Joseph and Elienne Montgolfier.
		Balloons are large bags filled with a gas that is less dense, or lighter, than the air on the outside of the bag.
	unmuseum.mus.pa.us /balloon.htm (406 words)

	Weather balloons could forecast gloom for whales (Site not responding. Last check: 2007-11-07)
		The balloons are made of polyethylene or neoprene - estimated by some to persist in the environment up to 400 years - and are known to harm animals by ingestion or entrapment.
		Eddlemon chose to study the ecological impact of downed weather balloons on whales because all the great whales that visit the Antarctic ocean are endangered, they swim great distances while there, and whale deaths in other oceans have been attributed to the ingestion of plastic bags.
		Using estimated balloon densities over time, balloon length, the whale's gape and swimming velocities, and population estimates, Eddlemon predicted the frequency of physical encounters with balloons for an individual whale and a population.
	www.ornl.gov /info/press_releases/archive/mr19970808-00.html (648 words)

	From Roswell, New Mexico-to-Cleburne, Texas:
		If these balloons should begin to lose altitude from depletion of the hot-air within, they are remotely issued a, "fuel-burn," which then provides heat to within the balloon, allowing it to ascend at its prescribed rate of up to 200 feet per minute.
		That was why they could not fly up to the supposed, weather balloon, and show to the public on live-TV what a weather balloon looks like before it crashes into a neighborhood, with a 1600lb payload and a classified amount of highly flammable butane-hydrogen, mixed with helium.
		They called them, "Weather Balloons," because, they could not tell us the truth, inasmuch as they did not know what the gigantically colorful UFO was, nor what its intentions were.
	jasonleigh.org /f5.htm (965 words)

	Forecasting - Modern Forecasting (Site not responding. Last check: 2007-11-07)
		Weather balloons record data such as temperature, pressure, humidity, and wind speed at different heights in the atmosphere.
		The data from weather balloons and satellites is put onto maps by computers.
		Meteorologists read the weather maps, and by interpreting the data that appears on them, they are able to make a forecast.
	weathereye.kgan.com /cadet/forecast/forecasting.html (254 words)

	National Weather Service Forecast Office - Mobile/Pensacola - Radiosonde Page
		Balloons generally reach altitudes as high as 100,000 feet prior to bursting about 90 minutes after launch.
		Radiosonde balloons are inflated with either helium or hydrogen gases and are usually launched in an open field, generally at an airport where obstructions are at a minimum.
		As you might imagine, the radiosonde weather balloon plays a significant part in the observation, analysis and prediction of the world's weather.
	www.srh.noaa.gov /mob/balloon.shtml (618 words)

	Weather @ National Geographic Magazine (Site not responding. Last check: 2007-11-07)
		Balloons track temperature, pressure, relative humidity, and wind speed and direction (via GPS tracking) in the upper atmosphere—conditions that have drastic effects on the weather we experience at sea level.
		But because balloons flew so high and encountered winds of up to 200 miles an hour (320 kilometers an hour), many of the readings were lost when the instruments crashed to the ground far from launch sites.
		The typical weather balloon is about six feet in diameter (two meters) and is filled with either helium or hydrogen.
	www.nationalgeographic.com /ngm/0506/feature5/learn.html (785 words)

	The U.S. rejects Iraq's explanation for the seized trailers, even though its own Army has such vehicles for filling ...
		One veteran intelligence official in Iraq said he is convinced that the seized trailers were indeed designed to produce hydrogen gas to fill weather balloons that were routinely used by Iraqi field artillery batteries.
		The intelligence official, who spoke on condition of anonymity, said the trucks did not carry autoclaves or other equipment needed to sterilize laboratory equipment, as would be needed to grow sensitive pathogens used as germ agents.
		Weather balloons are used by artillery units to collect atmospheric measurements — including wind speed and relative humidity — that help calculate the trajectory of rockets and cannon fire.
	www.informationclearinghouse.info /article3879.htm (979 words)

	Meteorology (Site not responding. Last check: 2007-11-07)
		Within the last 50 years, meteorologists have used weather balloons, satellites, radar, and computers to improve the accuracy of their forecasts.
		WEATHER BALLOONS carry an instrument called "Radio-sonde" which measures temperature, pressure, and humidity at different altitudes in the atmosphere.
		Weather Forecasters use many signs and symbols when they are describing what is going on in the weather and how weather is happening all across the country.
	oncampus.richmond.edu /academics/education/projects/webunits/weather/meteorology.html (303 words)

	Business Wire: Andrew GPS Antennas Ascend in Weather Balloons. @ HighBeam Research (Site not responding. Last check: 2007-11-07)
		This fixed or mobile launch unit is suitable for synoptic (showing simultaneous weather conditions over a large area), military, research or scientific purposes.
		Weather services, military authorities, and research organizations use these systems to gather the wind, pressure, temperature, and humidity data needed to predict the weather worldwide.
		Radiosondes are deployed daily by organizations such as the U.S. National Weather Service and the U.S. Air Force, at locations all over the world, to gather atmospheric data used to forecast the world's weather patterns.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:85494607&refid=ip_encyclopedia_hf (565 words)

	Balloon v1.0
		Actually, the term "weather balloon" might be a bit of a misnomer, because aside from the physical latex balloon, and the payload's ability to measure temperature, this project bears little resemblance to a traditional weather balloon.
		Balloons usually have parachutes that are unfolded and bear the weight of the payloads for the entire flight.
		Visually tracking the balloon is possible with a pair of binoculars on a clear day, even up to 100,000 ft., but not very high-tech, and it's easy to lose, even if you take your eyes off of it for only a second.
	vpizza.org /~jmeehan/balloon (8770 words)

	NOAA Education - Specially for Teachers ( Weather )
		Resource Listing for Weather and Climate Instruction - This document is intended to assist those who teach weather and climate at any level from pre-school through introductory college level courses, by listing some of the available instructional resources.
		The Weather Balloon - Learn about weather balloons - what they are, how they take observations, and how the information is used to predict the weather.
		Weather Balloon Video (Small Image) - Watch a weather balloon being inflated and released, then listen to the signal from the instrument (radiosonde) attached to the weather balloon as it transmits data back to the ground where the data is plotted on a computer.
	www.education.noaa.gov /tweather.html (1268 words)

	Weather Forecasting
		Although the weather is of interest to, and affects, us all, there are specialised scientists who study the weather in great detail.
		Weather stations, balloons high in the atmosphere, satellites in space and ships at sea all contribute by collecting the data we require.
		Weather can change very quickly (for example, if the wind changes direction slightly the rain may pass over and fall somewhere else) which means the forecast can quickly be out of date.
	www.rcn27.dial.pipex.com /cloudsrus/forecasting.html (367 words)

	Mount Weather / High Point Special Facility (SF) / Western Virginia Office
		Although the bunker at Mt. Weather did not become widely known until more than a decade later, the thinly disguised portrayal of the facility in Seven Days in May demonstrates that the fact of the existence and the location of the facility was already known by the early 1960s.
		The world's altitude record for a kite was claimed by the US Weather Bureau, with the ascent of a kite to 23,111 ft [7,044 meters] on 3 October 1907 at Mt. Weather.
		The Mount Weather Emergency Assistance Center has transitioned from a single mission to one that supports the all-hazards mission of FEMA and, simultaneously, it became a self-supporting cost center that derives its income from the Working Capital Fund authorized by Congress.
	www.globalsecurity.org /wmd/facility/mt_weather.htm (2393 words)

	'Trailers not for WMD but for weather balloons' - War on Iraq - smh.com.au
		One veteran intelligence official in Iraq, who spoke on condition of anonymity, said he is convinced that the seized trailers were indeed designed to produce hydrogen gas to fill weather balloons that were routinely used by Iraq field artillery batteries.
		Weather balloons are used by artillery units to collect atmospheric measurements - including wind speed and relative humidity - that help calculate the trajectory of rockets and cannon fire.
		US artillery units generally fill their balloons with helium, a far safer and less combustible gas than hydrogen.
	www.smh.com.au /articles/2003/06/23/1056220546779.html (537 words)

	Tools of the Atmospheric Scientist (Site not responding. Last check: 2007-11-07)
		Weather balloons are filled with helium gas and released twice each day (00Z and 1200Z) from numerous sites.
		As the balloon climbs it encounters lower air pressure which causes it to expand to many times its original size.
		The highest pressure is near the surface and decreases with a rise in altitude from 1050 mb to 100 mb.
	www.ux1.eiu.edu /~cxtdm/met/bbss.html (654 words)

	Weather -- Forecasting
		Modern weather forecasting involves a combination of computer models, observation, and a knowledge of trends and patterns.
		Certain weather features seem to be associated with certain types of weather, at least most of the time.
		Over the years, the observation of weather patterns has resulted in folk wisdom about the weather, a good deal of which is inaccurate, but some of which is supported by science.
	www.learner.org /exhibits/weather/forecasting.html (454 words)

	NOAA Education - Coolsites for Everyone ( Weather )
		The NOAA Climatic Data Center in Asheville, N.C., is the world’s largest reservoir of archived climate and weather data.
		These units include: a virtual tour of the NWS Weather Forecast Office at Sterling, VA; a description of the calibration, ascent and data obtained during a radiosonde Ascent; and a discussion of How Come Lows Don't Fill and Highs Smooth as the Winds Blow.
		• Weather Balloon Video (Small Image) - Watch a weather balloon being inflated and released, then listen to the signal from the instrument (radiosonde) attached to the weather balloon as it transmits data back to the ground where the data is plotted on a computer.
	www.education.noaa.gov /cweather.html (1480 words)

	Balloons
		A balloon ascends because the heated air or gas inside is lighter and less dense than the surrounding air.
		Balloons are made in a variety of sizes, shapes, and designs.
		Captive balloons are anchored to the ground by a cable.
	www.42explore.com /balloon.htm (1217 words)

	Weather Balloons - NovaLynx Corporation
		Each balloon is inflated, inspected, and tested before being dusted and sealed in a moistureproof polyethylene bag.
		Balloon weight is chosen based on the altitude and ascent rate required.
		The larger sounding balloons are designed to carry a radiosonde aloft, and these balloons are usually used in conjunction with a rawinsonde tracking station.
	www.novalynx.com /400-balloons.html (397 words)

	Las Vegas SUN: Budget cutbacks ground weekend weather balloons (Site not responding. Last check: 2007-11-07)
		While the Weather Service and the NNSA are being cooperative and seeking a way to restore the balloon flights, Runk said he had no idea how long they would be grounded.
		Weather balloons gather temperature, wind speed and humidity, providing a three-dimensional snapshot of the atmosphere from the ground up.
		Called upper air soundings, information gathered from the weather balloons that is released all over the world every 12 hours, helps forecasters track conditions in the air.
	www.lasvegassun.com /sunbin/stories/text/2005/feb/16/518301470.html (477 words)

	Weather Balloons
		A weather balloon was found in Paonia, CO. They could not locate it though.
		There is a lot of people trying to use weather balloons as a science fair project.
		Weather balloons are used in the measurement and evaluation of mostly upper atmospheric conditions.
	www.expage.com /PASTABOY62 (180 words)

	The Climate Detectives (Site not responding. Last check: 2007-11-07)
		Weather stations help us find out the temperature on the surface of the Earth.
		Weather stations also can tell us how fast the wind is moving and how much rain falls on the ground during a storm.
		Weather balloons are released to float high up into the atmosphere.
	www.epa.gov /globalwarming/kids/detectives.html (542 words)

	Learning to Fly with Helium Balloons
		One chapter in the book was about ways that people have attempted to overcome force of gravity, and included a photograph of a man floating into the sky in a harness tied to a cluster of large orange weather balloons.
		While I was in college, I learned to fly hot-air balloons, and some years later, I began flying Cloudhoppers, both of which have been a source of great fun and pleasure.
		For my first cluster balloon flight, I used seven, large slivery mylar balloons which were built by Don Piccard, one of the pioneers of modern hot-air ballooning.
	www.clusterballoon.org /learning/learning.htm (766 words)

	Forecasting - Teacher's Guide (Site not responding. Last check: 2007-11-07)
		At the beginning of the lesson, students are told that their family is going camping for a weekend at George Washington National Park in scenic Kansas.
		Different types of clouds and the weather associated with them are explained to the students.
		It explains how weather data is collected by using weather balloons and satellites, how computers can compile and track weather data, and how meteorologists interpret weather data to come up with a weather forecast.
	weathereye.kgan.com /cadet/forecast/teachers.html (461 words)

	The CATS Board
		Weather balloons were developed origionally by the military.
		If you were to research the history of the weather balloon that you are using you would find that it was origionally built with goverment funding for the goverment as the customer.
		I'll restate that the specific model of weather balloon that you are using was origionally developed with goverment funding.
	www.space-frontier.org /cgi-bin/BBS/CP1/read/801 (618 words)

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