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Gathering Weather Data. Section 12.3. Data From Earth ’ s Surface. Meteorologists measure temperature, air pressure, wind speed, and relative humidity __________ – measures temperature; Fahrenheit or Celsius; liquid in glass or bimetallic strip
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Gathering Weather Data Section 12.3
Data From Earth’s Surface • Meteorologists measure temperature, air pressure, wind speed, and relative humidity • __________– measures temperature; Fahrenheit or Celsius; liquid in glass or bimetallic strip • _________ – measures air pressure; mercury or aneroid
Data From Earth’s Surface • __________ – measures wind speed • __________– measures the direction of wind • _________ – measures humidity; sling psychrometer
Automated Surface Observing • NWS, FAA, and Dept. of Defense established the ASOS. • Began in 1990’s • 24/7 weather data • Provides info for aviation, weather forecasting, and weather research
Data in the Upper Atmosphere • __________ is an instrument for gathering data in the upper atmosphere • Include sensors and transmitters • Suspended from a weather balloon • Rawindsonde = radar + _____ + radiosonde • Began in 1980’s now replaced by GPS tracking