Final - Atmospheric

Question 1

What are some tools for measuring evapotranspiration? (5)

Answer 1

1. Evaporation pan (water height)
2. lysimeter (change in weight)
3. water balance equation (works well for small or controlled basins. May need storage and precip info)
4. energy balance
5. Hydrological model (penman monteith, ect.)

Question 2

Define saturation vapor pressure

Answer 2

partial pressure of the water molecules when the air is saturated

Question 3

Define actual vapor pressure

Answer 3

pressure resulting from the water molecules

Question 4

What are 4 precipitation processes?

Answer 4

• orographic uplift
• frontal uplift (density contrasts)
• forced convection (air mass convergence)
• free (bouyant) convection

Question 5

what are 2 mechanisms of precipitation formation?

Answer 5

• collision and coalescence

- Bergeron process (nucleation and growth) - grow via riming (accretion) and aggregation