Gathering Weather Data

1
Gathering Weather Data

• Section 12.3

2
Data From Earths Surface

• Meteorologists measure temperature, air pressure,
  wind speed, and relative humidity
• Thermometer measures temperature Fahrenheit or
  Celsius liquid in glass or bimetallic strip
• Barometer measures air pressure mercury or
  aneroid

3
Data From Earths Surface

• Anemometer measures wind speed
• Wind vane measures the direction of wind
• Hygrometer measures humidity sling
  psychrometer

4
Automated Surface Observing

• NWS, FAA, and Dept. of Defense established the
  ASOS.
• Began in 1990s
• 24/7 weather data
• Provides info for aviation, weather forecasting,
  and weather research

5
Data in the Upper Atmosphere

• Radiosonde is an instrument for gathering data in
  the upper atmosphere
• Include sensors and transmitters
• Suspended from a weather balloon
• Rawindsonde radar wind radiosonde
• Began in 1980s now replaced by GPS tracking