HW2_ATOC1050_KEY

.docx

School

University of Colorado, Boulder *

*We aren’t endorsed by this school

Course

1050

Subject

Aerospace Engineering

Date

Apr 3, 2024

Type

docx

Pages

4

Uploaded by maddie6638

Report
Homework #2 – ATOC 1050 ( KEY ) Please write down your answers and when you are finished, take the associated HW2 quiz on Canvas before the deadline. This sheet will not be turned in. Forces in the Atmosphere PGF = Pressure Gradient Force CF = Coriolis Force FR = Frictional Force GR = Gravitational Force Place letters on the blanks in each statement to make the statement correct. 1. The magnitude of the ____CF_____ is zero at the equator and increases with latitude. 2. The ____PGF______ acts to accelerate air horizontally from rest. 3. The _____CF______ can change the direction air moves, but not its speed. 4. The _____FR_____ is strongest near the earth’s surface and decreases in importance at higher altitudes. 5. The strength of the ___PGF___ is visualized on a surface map by the distance between isobars. 6. In the Northern Hemisphere, the ______FR_____ always acts opposite the direction of air motion, but the ____CF_____ always acts to the right of the air motion. 7. For weather applications, the magnitude of the ____GR____ acting on any air parcel can be considered constant throughout the troposphere. 8. The _____FR_____ acts to reduce the speed of air. 9. Except for very close to the surface, ____FR______ acts primarily through the mixing of parcels of air moving at different speeds (i.e., turbulence). 10. The ____CF______ is an apparent force associated with the rotation of the Earth. 11. The _____PGF____ is always directed toward lower values of pressure. 12. The ___CF__ would not exist if the Earth were not rotating. 13. Geostrophic balance is when the __CF___ and ___PGF___ are balanced. 14. Hydrostatic balance is the balance of the __GR____ and the vertical __PGF___ . 1
Analyzing forces and wind directions The map above shows the heights of the 300 mb surface in units of meters. Use this map to answer the next 9 questions. Assume geostrophic balance throughout the map. The wind is defined as where it is coming from. 15. What is the direction of the geostrophic wind at Point A? (N, S, E, or W ) 16. What is the direction of the geostrophic wind at Point B? (NW, NE, SW , or SE) 17. What is the direction of the geostrophic wind at Point C? ( NW , NE, SW, or SE) 18. What is the direction of the PGF at Point A? (N to S, S to N , E to W, or W to E) 19. What is the direction of the Coriolis force at Point A? ( N to S , S to N, E to W, or W to E) 20. What is the direction of the Coriolis force at Point B? ( NW to SE , NE to SW, SW to NE, or SE to NW) 21. What is the direction of the Coriolis force at Point C? (NW to SE, NE to SW , SW to NE, or SE to NW) 22. At which point would the wind speed be highest? (A, B , or C) 2
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help