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Air Temperature Measurement

Air Temperature Measurement. Thermometer Types Liquid-in-glass Bimetallic Electrical Proper Site Selection Height above ground Shaded Ventilated. Temperature Change with Elevation. Generally decreases with increasing elevation in the troposphere Vertical Temperature Profile- Atmosphere

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Air Temperature Measurement

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  1. Air Temperature Measurement • Thermometer Types • Liquid-in-glass • Bimetallic • Electrical • Proper Site Selection • Height above ground • Shaded • Ventilated

  2. Temperature Change with Elevation • Generally decreases with increasing elevation in the troposphere • Vertical Temperature Profile- Atmosphere • Importance of elevation of surroundings • Denver vs. State College • Denver vs. WV mountains

  3. Seasonality • Temperature difference between warm and cold season • Generally greater over land than water • Generally increases with distance from water • Heat capacity difference • Penetration of solar radiation in water • Mixing and currents in water • Evaporation of water • Cloud cover amount

  4. Prevailing Wind Direction • Blowing from water or land? • Charleston, SC vs. San Diego, CA

  5. Ocean Currents • Water temperature • Cold currents on west coasts, in general • Warm currents on east coasts, in general

  6. Air Masses • A large volume of air (thousands of miles across by several miles deep) with similar temperature and moisture characteristics throughout • Source Regions = High Pressure Areas • Air acquires attributes of underlying surface • Continental vs. Maritime (moisture) • Polar vs. Tropical (temperature)

  7. Key Figures • 3.1, 3.2, 3.10, 3.17, 3.20, 3.38

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