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Hi, can you please explain and answer the questions in this pdf for me please. I am fine with handwritten or typed explanations and answers to all of these problems. Thank you so much.
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Homework # 5
March 9, 2024
A companion assignment will be posted on Canvas on Monday. The assignment on Canvas is where you
will submit/select your answers. This assignment is due on Friday 3/15/24 and covers topics in lectures 19
– 23 and chapters 5, 7, and 9.
The Second exam is on Monday 3/18. The format will be the same as the first exam. If you would like
to take the exam in the lecture hall, that is available, and Sloane will be there to answer any questions in
person.
The exam will cover lectures 11-23 and chapters 4,5,7,8, 9, and the last section of 14 (Predicting long-term
weather and climate) in Extreme Weather and Climate. While the exam is not cumulative, the material
in this course builds on the topic covered in the first part of the class, so there will be some overlap in the
material.
This exam will also be open notes and open book, but not open internet. You may not search online
for answers or ask anyone (or computer) for help. If you have a question about the exam, please email me
or Sloane, and we will respond as quickly as we can. As with the last exam, you will have 50 minutes to
complete the exam, and it will be available from 9:30 – 11:30.
1. If you move a parcel of air to a higher altitude and it is denser than the surrounding air, the column of
air is
A. stable
B. unstable
2. A weather balloon is sent up and records temperature as it rises. What is the environmental lapse rate
and stability recorded by the balloon and shown in figure (1)?
A. 9◦ C/1000m, absolutely stable
B. 9◦ C/1000m, conditionally unstable
C. 5◦ C/1000m, absolutely stable
D. 5◦ C/1000m, conditionally unstable
3. If you have an unstable atmosphere, select processes that would help stabilize it:
A. warming the surface air
B. cooling the surface air
C. warming the air aloft
D. cooling the air aloft
E. mixing the air column
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Figure 1: A weather balloon recorded temperature as it ascended aloft. the temperatures are in degrees
Celsius and are measured every 1000 meters.
4. In a conditionally unstable atmosphere, When the air temperature is equal to the dew point temperature,
a perturbed air parcel will
A. return towards its original position
B. continue to ascend
C. descend back to the ground
D. none of the above
A wind blows a parcel of air with a Temperature T = 15◦ C and a dew point temperature Td = 11◦ C up
and over a mountain. The mountain’s base is at sea level and increases to a height of 2000 meters.
5. What is the lifting condensation level (the altitude that clouds begin to form?)
A. 500 m
B. 1000 m
C. 1500 m
D. 2000 m
6. What would you expect the Air temperature to be at the base of the mountain on the leeward side?
A. 15◦ C
B. 6◦ C
C. 26◦ C
D. 21◦ C
7. What would you expect the dew point temperature to be at the leeward side of the mountain?
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A. −1◦ C
B. 5◦ C
C. 15◦ C
D. 21◦ C
8. Print out and draw out isobars on the pressure map shown in figure (2). How many low-pressure systems
did you find?
A. 1
B. 2
C. 3
D. 4
9. When examining a weather map, what does it mean if isobars are closely spaced together?
A. Low-pressure systems are present.
B. The area is experiencing calm weather conditions.
C. There is a strong pressure gradient indicating windy conditions.
D. High humidity levels are present.
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Figure 2: Simplified surface pressures recorded in March of 2022. Numbers on the map are in mmb and
represent sea-level corrected surface pressures.
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10. Which best describes the Coriolis force?
A. It causes air masses to rise and form clouds.
B. It is responsible for the rotation of the Earth.
C. It deflects moving objects to the right in the Northern Hemisphere.
D. It mainly affects ocean currents, not atmospheric circulation.
11. Geostrophic flow occurs when
A. air is on the surface.
B. air flows perpendicular to isobars.
C. there is no friction force.
D. the Coriolis force balances the pressure gradient force.
12. Why do winds cross isobars on the surface but not aloft?
A. because the surface has higher pressure and pushes the air with greater force
B. because temperature gradients are larger on the surface than in the air aloft
C. because friction slows the airflow, reducing the Coriolis force, resulting force in an imbalance
between the PGF and Coriolis, driving winds across isobars.
D. none of the above
13. Look again at the surface pressure map in figure (2). There is a star indicating our position on the map.
Given the surface pressures on the map and the isobars you drew, what direction are the surface wind
moving at our location?
A. North
B. South
C. East
D. West
14. Air Masses
A. move slowly northward in the Northern Hemisphere and southward in the Southern Hemisphere
B. are relatively uniform in their spatial extent and acquire their properties from a particular
source region.
C. are low pressure systems.
D. slowly rotate counter clockwise in the Northern Hemisphere.
15. Match the air masses with their associated properties. mT, cP, cT, mP:
A. Cold, dry and stable.
B. Cool, moist, unstable.
C. Hot, dry, unstable surface air.
D. Warm, moist, usually unstable.
16. Which of the following best describes a front in meteorology?
A. The boundary between two different air masses
B. The speed at which a weather system moves
C. The formation of thunderstorms and lightning
D. A type of severe weather event
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