1. Questions: Chapter 2 – 7ab, 10ab, 11ab, 13acd
Meteo 003: Lab 2
Due Friday Sept. 9th
Questions: Chapter 2 – 7ab, 10ab, 11ab, 13acd
Chapter 3 – 1, 4, 6, 9abc

2. Chapter 2 – 7ab, 10ab, 11ab, 13acd Chapter 3 – 1, 4, 6, 9abc
Topics Covered
Seasonality
Nighttime Radiation
Interpreting Images/Graphs
Sun Angles
Climatology
Land/Water Effect on Climate

3. Problem 2.7 (p. 77) a) Graphing radiation as function of latitude
Recommend using Excel
Graphs need titles, labels, and units
Find latitude where incoming radiation varies the least and varies the most b)
Interpreting graphs – Latitudes with largest and smallest temperature swing from winter to summer. (Hint - should be same as part a)
Think of what factors affect the seasonality and climate of a location

4. Problem 2.10 (p. 78) Why the difference? a)
Interpreting graphs of radiation
*Note the different scales on the y axis
Downwelling Infrared Radiation –
downward emission of IR radiation b)
Connect radiation to temperature (which night has greater average of downwelling radiation?)

5. Problem 2.11 (pg. 79) a) Connect radiation and temperature
Think Stefan-Boltzmann Law
Compare radiation map to satellite imagery b)
Satellite imagery should give you answer
Again compare temperature to radiation

6. Satellite Imagery Example
Satellite Imagery on left shows clouds
Infrared Image on right (bright colors show cold clouds tops)

7. Problem 2.13 (p. 80) *Note: NO part b a) Familiar product: UV Index
Good site to reference: c)
Is the UV index a function of latitude? d)
Interpret graph
Use site for more help

8. Problem # 3.1 (p. 111) Use 40.8ᵒ N for State College
Need to make 4 calculations
Think of where the sun is overhead during the Solstices and Equinoxes
Consider the sign of latitude in northern and southern hemispheres
Equation needed: Max altitude of Sun = 90 – D
where D is the difference between the latitude of the location and the latitude where the sun is directly overhead

9. Sun Angle Example
Washington, DC is located at 39ᵒ N. Determine the maximum altitude of the sun during the winter solstice and fall/spring equinox
Winter solstice sun is overhead
at 23.5°S latitude
Difference is 39° - (-23.5°) = 62.5°
Use 90° - D  90° ° = 27.5°
Fall and Spring equinox
Is simply 90°-39° = 51°

10. Problem 3.4 (p. 112)
Determining the seasonality and climatology of the locations
Consider the latitude, proximity to water, prevailing wind, elevation
Latitude – warmer locations closer to equator
How continental is the location?
Proximity to water - San Francisco is closest to large body of water so it has the least variability. St Louis is far from water, continental location with big temperature swings
West vs East coast - Charleston has more variability than San Diego (San Diego prevailing winds from west off the Pacific)

11. Problem 3.6 (p. 113) Similar to 3.4 Use same considerations
Although latitude is no longer issue
Wind will play a larger factor

12. Seasonality Example
Kansas city has greatest seasonality – 51 (no water near by, temps fluctuate greatly)
Savannah is second – 33 (general westerly winds, so water won’t have as great of an impact)
Oakland least – 15 (flow off Pacific keeps temps more consistent

13. Problem 3.9 (p. 115)
Features should be fairly easy to spot (continents)
Know your geography
Equatorial regions have the least seasonality c)
Think about the same guidelines used in 3.4 and 3.6
More continental, highest seasonality = greatest difference in temperature.

14. LAB #2 - DUE FRIDAY SEPT. 9th
Ann 12-1 PM 6th floor Walker Weather Center (room 606)
Dalton 2-3 PM 6th floor Walker Weather Center
Kerry 3-4 PM 6th floor Walker Weather Center
LAB #2 Assignment Summary
Chapter 2: (7a,b) (10a,b) (11a,b) (13a,c,d)
Chapter 3: (1) (4) (6) (9a,b,c)