Air Temp And Humidity Flashcards
Condensation
Heat loss driven transformation of a paper into a liquid
Advection fog
When warm moist air moves over a sufficiently colder surface the moist air may cool to its saturation point
High dew point Indicates
High water vapor content
Evaporation
Heat induced driven transformation of a liquid into a vapor
Evapotranspiration
Loss of water via water vapor from plants
Heating degree day
Application used to estimate energy needs
Temperature departure below 65°F base
With the constant amount of water vapor, cooling the air ______ relative humidity and warming the air ______ it
Raises, lowers
Dew, Frost, fog
Formed by service moisture, cold temperatures, no wind products of condensation
Wet-bulb temperature
Temperature of a fully saturated cloud
Night ______
Cooling
Day _____
Warming
Measurement of humidity
Sling Psychrometer, duel dry/wet thermometers
Cooling degree day
Daily temperature departure above 65°F base
Effect of proximity to ocean currents on air temp
Help keeps weather moderate
Condensation nuclei
Tiny particles upon who surfaces condensation of water vapor begins in the atmosphere
Saturation
No net loss or gain of liquid/vapor molecules for every molecule that evaporates, one must condense
Sensible temperature
The human body’s perception of temperature
Effect of elevation on air temp
Colder as you go up
Day warming
Temperatures rise max at mid afternoon
Diurnal variations
What does relative humidity feel high and low during the day
Dewpoint
Temperature to which air must be cooled for saturation to occur
Wind chill index
The faster the wind blows the greater the heat loss in the colder we feel
Relative humidity
Ratio of the water vapor content to capacity saturation
Night cooling
Infrared energy radiates up from ground as radiational cooling
