1. Due - October 6th in Class
Meteo 003: Lab 5
Chapter 6: 13, 18abc
Chapter 7: 1abc, 2bc, 8abc, 10ab
Chapter 8: 6ab
Due - October 6th in Class

2. 6.13 (pg. 252) PGF is greater in WV/PA than in New England
What force slows down wind?
What properties can cause differences in this force?
Consider the difference in surfaces in which the wind is blowing over

3. 6.18 a,b,c (pg. 256)
a) -Pressure increases the deeper you go down in an ocean -How does this affect the boiling point? b) -Same concept as part a -What advantage does this offer for cooking? c) -Pressure is lower at higher altitudes
Part b - Increasing pressure raises boiling point which allows you to cook at temps higher than 212
Part c – water boils at lower temp, so egg might not be fully cooked

4. 7.1a,b,c (pg. 291)
a) -Pressure decreases with altitude -Which pressure surface should have the highest heights? The lowest? b) -Use the isopleths to estimate (interpolate) heights at each city c) -Geostrophic winds are parallel to the isobars with lower heights to the left of the wind direction -How does the spacing of isobars relate to wind speed?

5. 7.1 Example Find wind direction at each location
Which location would have the greater wind speed?

6. 7.2 b,c (pg. 292) b)
-Which pressure level is closer to the ground: 850 mb or 925 mb?
-How does wind direction and speed change the higher you go in the atmosphere? Why? Think about one force in particular! c)
Buys-Ballot’s Law: lower heights are to the ________ of wind (in NH).
What direction does wind flow around lows and highs (in NH)? Use clockwise or counterclockwise.

7. 7.8 a,b,c (pg. 299)
a) -Follow same guidelines for isoplething b) -Find the jet stream first, isotachs should help Jet Streak: core of relatively fast winds embedded in the jet stream c) -A stronger north-south temperature gradient equals a stronger jet stream -In which season is this temperature gradient stronger? -Reference pages

8. 7.10 a,b (pg. 300) a) -Mark the centers of closed contours (H or L)
-Identify Paris and Moscow
-Winds at the 250 mb level, friction? b)
-Use the wind direction from part (a)
-Aircraft speed affected by winds:
Example: If a plane flies 500 mph directly into a 100 mph wind
(blowing the opposite direction of plane motion)
air speed = 500 – 100 = 400 mph

9. 8.6 a,b (pg. 349)
a) -Graph on Excel or neatly on paper, remember title, axes, and units -Elevation is placed on the y-axis -What is the name of a layer where temperature increases with altitude? b) -Use dry adiabatic lapse rate of 10ᵒC/km -Interpolate environmental temperature -What will the parcel do if it is in “equilibrium” (no other forces acting upon it) and it is warmer than the environment? Colder?

11. Elevation above Sea Level (m)
8.6 Example
Elevation above Sea Level (m)
Temperature (ᵒC)
370
-20
488
-16
619
-14
921
-10
1243
-13
State College, PA is at an elevation of 370 m above sea level
If the parcel is lifted 400 m, what will the temperature of the parcel be? What do you need to know to correctly calculate a parcel’s final temperature?
What is the temperature of the environment at this level?
Will the parcel continue to rise or will it sink?
Start at 370 m and lift 400m to 770m. Here environment temperature is about -12 degrees Celsius
Parcel starts at -20 and decrease 10 degrees Celsius per KM, so 400m = 4 degrees Celsius = - 24 degrees C.
So the parcel will be colder and sink back down towards the ground,.
Inversion is very stable because parcel always cool, but environment temp will increase. Temp difference between envior and parcel increases with altitude.

12. Due October 6th in Class Office hours: Thursday 2-3 in 606B Walker
me if you have any questions!
LAB #5 Assignment Summary
Chapter 6: (13) (18 a,b,c)
Chapter 7: (1 a,b,c ) (2 b,c) (8 a,b,c) (10 a,b)
Chapter 8: (6 a,b)