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Related Flashcards
Cards In This Set
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Define absolute humidity
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Mass of water vapor/volume of air. not used much.
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Define specific humidity.
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Mass of water vapor/total mass of air
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Define mixing ration.
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Mass of water vapor/mass of dry air
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Define Relative Humidity
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Water vapor content/water vapor capacity times 100%
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What factors are necessary for nighttime temp inversions?
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Clear skies; calm (no wind); dry; long winter nights.
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When can wet haze occur?
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RH above 75%
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Define Dew Point temp
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Temp the air must be to reach saturation. Tells us about water vapor content. Higher means more water vapor content in the air.
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Define wet bulb temp
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How much you can cool the air through evaporation.
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Hydrolic cycle, what affects?
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Transpiration, evaporation, wind precipitation
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Define Vapor Pressure.
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The force exerted by the water vapor in the atm.
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Define Saturation Vapor Pressure.
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The force that would be exerted by water vapor if the air was saturated.
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Define heat index
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RH changes that affect a person's ability to cool themselves through evaporation, and therefore the temp feels hotter. When the RH is higher, the heat index can also rise.
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Two ways to change RH.
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Change water vapor content. Change temperature.
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