Humidity, Relative Humidity, and Dew Point
What would the relative humidity be if the wet bulb thermometer and the dry bulb thermometer were reading the same?
100%
Why are wet bulb thermometer readings lower than dry bulb readings
Because when the water evaporates it becomes colder
How do you find the wet bulb depression?
Dry bulb temperature - wet bulb temperature
What happens when air reaches it's dew point temperature?
It is over saturated and condensation occurs
What is humidity?
The measure of the amount of water vapor in the air
The layer of the Atmosphere which most of the water vapor is found
Troposphere
What can condensation form?
dew, frost, fog, and clouds
when air temperature rises and dew point stays the same what happens to the relative humidity?
it drops
What happens to the relative humidity as the wet bulb and the dry bulb temperatures become closer together?
it increases
When dew point temperature rises and the air temperature stays the same what happens to the relative humidity?
it rises
What is relative humidity?
the amount of water in the air compared to how much water the air can hold (percentage)
What is Dew Point?
the temperature at which more condensation occurs than evaporation in air.
What is the relationship between the temperature and the amount of water vapor it can hold?
the warmer the air the more water it can hold
If the relative humidity is 100%, what is the chance for precipitation that day?
very likely
How does a sling psychometer help to tell how much humidity is in the air?
water on the bulb evaporates and cools the thermometer
The instrument used to find Dew Points and Relative Humidity
with a sling psychrometer
