Meteorology Chapter 4

Front 1

What does Saturation vapor pressure primarily depend upon?

Back 1

Air temperature

Front 2

How does condensation differ from precipitation?

Back 2

Condensation will produce small cloud droplets that are visible, but to small to fall out of the sky.
Precipitation occurs when cloud particles, liquid or solid grow to a size large enough that enables them to fall to the earths surface.

Front 3

On what instrument for measuring atmospheric moisture can you find a wet and dry bulb?

Back 3

aspirated or sling psychrometer

Front 4

Wet Bulb Depression-

Back 4

temp difference between the wet bulb and dry bulb (air temp.)

Front 5

dew-point temperature

Back 5

the temp. to which air would have to be cooled (with no change in air pressure or moisture content) for saturation to occur.

Front 6

Actual vapor pressure

Back 6

indicated the air's total or curremt water vapor content

Front 7

Explain why condensation occurs primarily when the air is cooled

Back 7

Condensation occurs when water vapor molecules condense onto condensation nuclei

Front 8

what are primary factors that influence evaporation?

Back 8

1- water temp- warmer the water the greater the amount of evaporation
2-wind speed- winds will enhance evaporation
3-moisture content of air above water surface- the drier the air, the higher the potential for evaporation

Front 9

Wet bulb temp

Back 9

lowest temperature that can be reached by evaporating water into the air

Front 10

Saturation Vapor Pressure

Back 10

describes how much water vapor is necessary to make the air saturated at any given temp. or it describes the maximum amount of water vapor the air can hold at a given time

Front 11

Relative Humidity Equations

Back 11

Actual Vapor pressure (e)
------------------------------------------ x 100
Saturated Vapor Pressure (es)

or

dew point temp.
--------------------------- x100
air temp.