1. Weather
#14

3. Values Temperature Dew Point Air Pressure Density
Measurement of molecular movement
Dew Point
Temp to which air becomes saturated
Air Pressure
Amount of air above you
Density
number of particles occupying a particular space.

4. Solar Energy Drives earth’s processes
Most all energy comes from the sun
Radiation
Conduction
Convection

5. Cloud Formation Warm moist air rises, expands, cools and condenses
Solid particles such as dust and salt must be present in order for water vapor to condense
4 different ways
Convection Lifting
Orographic lifting
wind encounters mountains and is force up
Convergence Lifting
convergence of opposing air masses
Frontal Lifting
warm or less dense air mass lifted by a cold or more-dense air mass

6. Types of Clouds Classified based on cloud height and shape Shape
nimbostratus
Classified
based on cloud height and shape
Shape
Cirrus
whispy, stringy clouds
Cumulus
puffy, lumpy-looking clouds
Stratus
featureless sheets of clouds
Nimbus
low, gray rain clouds.
cirrus
cumulus

7. Weather Climate Air Masses current state of the atmosphere.
Long-term variations in weather for a particular area.
averaged over the course of 30 years or more.
Air Masses
large body of air
source region
form over land = dry
form over water = moist

8. Station model
Data for a particular site at a particular time.

9. Weather Maps Isopleths - connecting points which have an equal value
Isobars – lines of equal pressure.
Bars are close together = High winds
Bars are far apart = light winds

11. Isotherms – lines of equal temperature

13. Global Wind Systems Coriolis Effect Earth rotates from west to east
air particles are deflected
to the right above the equator
to the left below equator
Coriolis Effect Video

14. Jet Streams Narrow bands of fast, high-altitude, winds
flow at speeds up to 185 km/h
2 in northern hemisphere
Mid-Latitude
Subtropical