If the balloon were completely filled from the start, as the pressure outside the balloon dropped, the balloon would attempt to expand to equalize the pressure, but instead it would pop. Meteorologists and scientists use weather balloons to make meteorological measurements in high altitudes.
Scientists attach an instrument called a radiosonde to the base of the helium filled balloon. The radiosonde—which measures temperature, humidity and air pressure—transmits meteorological measurements to ground stations through radio transmitters. As a weather balloon rises into high altitudes, where air pressure decreases, the helium or hydrogen pressure inside the balloon increases and expands the balloon. This way the balloon and the radiosonde can rise at a consistent pace high into the atmosphere.
Balloons zoom upwards at around 1, feet per minute. Louis Missouri, the balloon ascends to an altitude of around , feet, enough to see the earth's blue rounded edge from space. By that height, the balloon—depending on the size of the envelope or balloon material—is stretched as wide as a car or house.
When the balloon can no longer stretch outward, and therefore rise further, the balloon ruptures. According to Weather Service, only 1 out of 5 radiosonde released are recovered.
However, if you do find one, please return it because they can be reconditioned and used. On average weather balloons will ascend for about 90 minutes before bursting. They typically reach about 60, to , feet. In the United States it is illegal to use a cell phone or devices which use cell phone transmitters to track high-altitude weather balloons in flight according to Federal Communications Commission FCC Regulation They drift with the wind and are never in the same place from night tonight.
The FAA has a Visual Flight Rules chart that dictates that visibility when ballooning must be at least one mile out, which is not always possible when flying at night. A typical weather balloon can last over two hours as it rises into the sky. But what happens when the balloons reach our upper atmosphere? Scientists from the National Oceanic and Atmospheric Administration and the University of Colorado were curious, so they launched a balloon with a GoPro camera underneath in addition to a radiosonde.
This sequence of photos below shows the exploding weather balloon over Colorado at roughly , feet above the Earth's surface. It expands and explodes because of the lower air pressure at higher altitudes.
These conditions include: the time of year, the wind conditions, the weight of your balloon, and how much gas is inside your balloon. For instance, in the winter time, we estimate weather balloons to horizontally travel from 35 to 75 miles or more due to atmospheric winds.
It really is exciting! When the gases expand to the point where there is no more room, the balloon explodes and the ascent is complete. The attached payload boxes and other equipment with gradually fall back to Earth for an average 30 minutes.
With StratoStar launches, your team can track the coordinates of your balloon using a GPS and collect the videos from the stratosphere.
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