1. Conditions for Cloud Formation
Clouds are made of which 2 states of Matter?
Liquid
Ice
CONDENSATION NUCLEI:
Surface for water vapor to condense on (dust, smoke, salt)
-How does this help the formation of clouds?

2. Other ingredients for Cloud Formation
Air must be saturated
Cooling leads to condensation
3. LOW PRESSURE
Causes air to e x p a n d…cooling air to its dewpoint
Cloud Video

3. Convective Cooling
The lowering of the temperature of a mass of air due to its rising and expanding.

4. FORCEFUL LIFTING

5. FORCEFUL LIFTING 1. Frontal Wedging
- a moving mass of warm air encounters a mass of cold air in its path and rises up over it
2. Orographic Lifting
- An air mass is force from a low elevation to a higher elevation as it moves over rising terrain.

6. Forceful Lifting: Frontal Wedging

7. Forceful Lifting: Frontal Wedging

8. Forceful Lifting: Frontal Wedging

9. Forceful Lifting: Frontal Wedging

11. Orographic Lifting RAINSHADOW Effect

12. Forceful Lifting

17. FOG
The result of condensation of water vapor in the air. Formed near the surface of the earth.
Like a cloud, only lower.

18. FOG
Radiation fog
At night, layer of air above ground is cooled to it’s dew point
Advection fog
Warm moist air moves over a cold surface (mostly coastal)

19. Precipitation
Work on 5.04 table
Use pg
Due Monday!

20. CLOUD CLASSIFICATION

21. CLOUD TYPES There are three major cloud types:
Stratus- low layers of clouds. These clouds can bring light rain. Fog is usually a layer of stratus clouds touching the ground.

22. CLOUD TYPES
Cumulus- mid-level clouds that are fluffy and have flat bases. Large cumulus clouds can produce thunderstorms.
Cirrus- high-level clouds that are wispy. No precipitation is associated with these clouds.

23. CLOUD TYPES Cloud prefixes & suffixes:
Cirro- high level clouds
Alto- mid-level clouds
Strato- low-level clouds
Nimbo/nimbus- rain clouds
Cumulo- towering clouds
These terms can be combined to form several cloud names.

24. CLOUD TYPES
Cumulonimbus- towering cumulus cloud capable of thunderstorms.
Stratocumulus- low-level, layered and puffy clouds.
Nimbostratus- low layers of clouds that are capable of bringing long, steady rain.

25. CLOUD TYPES
Cirrostratus- high, thin layered clouds. These can form halos around the moon or sun.
Altostratus- mid-level, layered clouds. These look gray/blue. The sun is visible through them.
Altocumulus- mid-level clouds that are puffy.
Cirrocumulus- high-level clouds that are puffy.