1. METEO 003 Lab 7 DUE: Friday, October 24

2. Chapter 9: #3 a, b, c – Thunderstorm Frequency Part A and B: Calculating average number of years per thunderstorm Example: A location averages 0.2 days with thunderstorms in March per year. Question: At this location, a March thunderstorm-day occurs every _______ year(s), on average.

3. Chapter 9: #3 a, b, c – Thunderstorm Frequency Part C: Instability, which leads to thunderstorms, is caused by: WARMING at the SURFACE and/or COOLING aloft (around 500mb)

4. Chapter 9: #12 – Terminal Velocity Use this equation to calculate the terminal velocity of different sizes of hail: Convert speed from cm/s to mph

5. Chapter 9: #15 a, b, c – Lake Breeze Front Part A: Mark lake-breeze front with heavy, dark line Example: Part B: May use arrows to show direction of wind Part C: Image taken in Summer or Winter? HINT: Look at what areas of the surface are unstable (have clouds). Should unstable areas be warm or cool at the surface?

6. Chapter 9: #16 – T-Storm Triggers Match each location with description of why there are clouds there Provide reasoning for each choice NOTE: There are mountains in south- central and southwest PA

7. Chapter 10: #1 a, b – Location of the ITCZ Intertropical Convergence Zone (ITCZ) – area around the equator where trade winds converge, characterized by enhanced precipitation Roughly follows area of the Earth that gets hit directly by the suns rays from season to season Leads to variation in north – south placement from season to season Goes father north and south over land masses (compared to over water) due to greater seasonal temperature variations

8. Chapter 10: #3 – El Nino and La Nina El Nino – Phase of El Nino Southern Oscillation (ENSO) characterized by WARMER than average ocean temperatures in the central and east-central equatorial Pacific La Nina – Phase of El Nino Southern Oscillation (ENSO) characterized by COOLER than average ocean temperatures in the central and east-central equatorial Pacific

9. Chapter 10: #5 – Precipitation Pattern in Darwin, Australia Don’t forget that there are two questions here! Lower pressure = ITCZ closer by = more precipitation HINT: Very wet conditions imply lots of cloudiness. What does that mean regarding daytime temperatures?

10. Chapter 10: #7 a,b – Eckman TRansport Eckman Spiral – Consequence of Coriolis effect, each successively deeper layer of water moves more slowly to the right in the northern Hemisphere NOTE: Icebergs are 90% underwater

11. Chapter 11: #8 – Hurricane Andrew Graph – Storm surge on Y axis and distance on X axis DON’T FORGET LABELS WITH UNITS First solve for constant using 150 km from center and 40 km/h (use this constant for a, b, and c) Wind Speed [km/h] * sqrt(distance from center [km]) = constant Chapter 11: #9 a, b, c – Hurricanes

12. Lab 7 DUE: Friday, October 24 9.3 a,b,c 9.12 9.15 a,b,c 9.16 10.1 a,b 10.3 10.5 10.7 a,b 11.8 11.9 a,b,c