1. Meteo 003 Lab 7 Due Friday, October 20th
9.3abc, 9.12, 9.15abc, 9.16
10.1ab, 10.2ab, 10.3

2. Chapter 9, #3abc A) Average occurrence of thunderstorms
Ex) January = 0.4 days, so, a thunderstorm will occur once every _____ years
B) Do more thunderstorms occur during the warmer or colder months in San Francisco?
The answer from Part A will help with this
C) Think about ways to destabilize the troposphere:
Heat below or cool above
Look at climatology map to determine which situation occurred
A) 1/0.4 = 2.5

3. Chapter 9 #12 Terminal Velocity = 1750 * √(Diameter)
Use [cm] for the diameter units in your initial calculation
Units of calculated terminal velocity are [cm/s]
Convert to mph
6.2137*10-6 miles = 1 cm
3600 seconds in an hour

4. Chapter 9 #15abc
A) Lake breeze front will be at the boundary of clear skies and clouds
Winds will blow perpendicular to front
B) Draw arrows at each square showing wind direction AND write the wind direction of EACH location (see next slide)
C) Time of year image was taken
How do water temperatures compare to the surrounding land in summer, winter?
Are cumulus clouds more likely to form over a relatively cool surface or relatively warm surface?

5. NNE NE
???

6. Chapter 9 #16 Match locations to descriptions
Visible satellite image, white patches correspond to clouds
Note location of the Appalachian Mountains
Image was taken in July, lakes relatively cool compared to land

7. Chapter 10 #1ab
ITCZ (Intertropical Convergence Zone): Elongated area that separates the trade winds in the Northern Hemisphere from their counterparts in the southern hemisphere
The ITCZ tends to follow the sun’s direct rays
Land heats more intensely than water, less land means more even distribution of heating.

8. Chapter 10 #2ab A) Isohyets are isopleths of precipitation
Draw 50, 100 and 150 inch isohyets
B) Use the contour map to help explain precipitation pattern
Prevailing low level winds are from what direction?
Precipitation pattern of the windward vs leeward side of a mountain

9. Chapter 10 #3
El Niño: Anomalously warm (warmer than normal) waters in the equatorial central and eastern Pacific
La Niña: Anomalously cold waters in the equatorial central and eastern Pacific
Neutral (“La Nada”): Somewhere in between, neutral or average Pacific temperatures

10. Lab 7: Due Friday, October 20th
Office hours: Thursday 2-3 in Walker 606B
me if you have any questions!
Chapter 9: 3abc, 12, 15abc, 16
Chapter 10: 1ab, 2ab, 3