ATMS 201: SP2022 Choate
Name:
Homework Exercise 9 Interpreting Skew-T diagrams
Due: Thursday, March 10th, 2022 @ 11:00 AM (class time)

A Skew-T/Log P diagram with a sounding plotted is on the next page. From this sounding, answer
the following questions:

1. What is the surface temperature?
2. What is the surface dewpoint temperature?
3. What is the surface wind speed and direction?
4. What is the 300 hPa wind speed and direction?
5. Is there CAPE on this sounding?
6. What is temperature difference between the 700 hPa level and 500 hPa level over Lincoln, IL?
7. What is the dewpoint temperature at 850 hPa?
8. What is the mixing ratio at 700 hPa?
9. What is the saturation mixing ratio at 700 hPa?
10. What is the relative humidity at 700 hPa?
11. At what pressure level is the tropopause?
12. At what pressure level would falling ice particles start to melt into rain?
13. What is the potential temperature at that level?
14. Does potential temperature increase or decrease with altitude?
15. If you were flying on an aircraft at 350 hPa, what would the Fahrenheit temperature be outside the
window?

16. There are many inversions evident on this sounding including one at the surface. Why is this present?


17. List at least one other pressure level where an inversion begins (not the surface and not the tropopause).
18. Why do you think it is so cold near the ground compared to just above the ground?


19. Are there any clouds at this time?
20. What is the equivalent potential temperature at 950 mb?







ATMS 201: SP2022 Choate