ANSWERS TO REVIEW QUESTIONS
The troposphere and the stratosphere.
Pressure, temperature, relative humidity, and winds.
Upper-air soundings are used as primary input to upper-air computer forecast
products, as well as for climatological and atmospheric research. They are also
used extensively for local forecasting,
A radiosonde observation measures pressure, temperature, and relative humidity
only, while a rawinsonde observation measures these parameters in addition to
Rawinsonde and Pibal observations.
A dropsonde observation.
Federal Meteorological Handbook No. 3 (FMH-3).
To determine wind vector information.
Helium and hydrogen.
100-gram and 300-gram balloons.
When the balloon has been stored in cold temperatures or is older than 1 year.
Between 900 to 1,000 feet per minute.
To reduce the pressure (flow rate) of a gas into the balloon in order to prevent
damage to the balloon.
About 40 cubic feet.
Additional gas should be added to increase lift.
To protect and securely hold the balloon when launching in high wind conditions.
With an 18-volt battery.
The radiosonde frequency can be adjusted by using a small screwdriver to turn a
tuning screw located on the outside of the radiosonde unit.
By displaying 5 asterisks (* * * * *) on the LCD.
The Officer of the Deck (OOD).