ATMS 411 Homework [Main Page] [Daily Notes] [Final Project]

 

Homework style example.

ONLINE ASSIGNMENTS ARE GIVEN IN WEBCAMPUS.


Homework 1
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Turn in this homework assignment through webCampus, using Microsoft Word.

Purpose:
Study the introductory chapter for an overview of the field.
Access and interpret sounding and reanalysis meteorological data from around the world.
Calculate and graph meteorological variables to investigate their vertical distribution in the atmosphere.
Learn how to make and interpret publication quality graphs for meteorology.
Advance science writing skills.

Make one MSword document that has solutions for problems 1 through 4.

Read chapter 1.
1. Do problem 1.6 parts a, c, d, and i. Write your answers into the first part of the MSword document you will be turning in for this assignment.

2. Do problem 1.12, being sure to express your answer in degree C per kilometer.
Then go to the South Pole and find a sounding that best resembles the features of this problem.
Soundings from the South Pole are at Amundsen-Scott station 89009.
Look at data from July 2020 and find a day with cold surface conditions and a strong inversion calculated from the first two points.
You can put the station number 89009 in the website and press enter to access this data. (Example).

3. Prepare a short report that describes the atmosphere for 00Z, 10 January 2019 for these two locations, Rochambeau French Guiana (SOCA, Station 81405) and Barrow Alaska USA (PABR, Station 70026)
a. Use Google Earth to view these two locations, Rochambeau French Guiana (coordinates 4.8222, -52.3653) and Barrow Alaska USA (coordinates 71.2889, -156.7833). Save images of each location and use as figures 1 and 2 in your report.
Include grid lines in these images so you can see the Tropic of Cancer and the Arctic Circle, respectively, and discuss the significance of these geographical demarcations,
both in of themselves and with respect to the amount of solar radiation expected to be seen seasonally in their vicinity.

b. Acquire the gif skew T soundings for PABR and SOCA for this day and time. Make these soundings figures 3 and 4 in your report.
Discuss these soundings.
Observe the lapse rate Γ=-dT/dz from the slope of the temperature versus height graph and interpret.

c. Near equator: Rochambeau French Guiana (get sounding text for SOCA from the Wyoming site.
Plot pressure and temperature vs height as figure 5 in your report.
Calculate density and plot versus height in a separate graph as figure 6).

Density of dry and moist air

d. Near north pole: Barrow Alaska (get sounding for PABR from the Wyoming site.
Overlay pressure and temperature vs height with the SOCA sounding in figure 5.
Calculate density and overlay with the SOCA sounding in figure 6).

e. Then make a graph and fit a trendline for the natural logarithm of pressure, ln(Pressure) vs height
to obtain the scale height of the atmosphere at these two locations,
considering data to a height of 2 km.
Include this graph as figure 7.

In your report, compare and contrast the difference in the meteorology between these two sites for 10 January 2019
as a function of height in the atmosphere, both near the surface and throughout the atmosphere.

NOTE: A short report should be written like a short section in a text book.
A. Title for the report. Your name.
B. First paragraph describes what's in the report, describes what is to be accomplished.
C. Each figure must have a number and a caption. Figures must be in publication format -- high quality figures with 18 point (or greater) bold black font; tick marks inside. All axes 1 point thick and black.
D. Each figure must be discussed in the text by number, describing the significance of the figure and its relationship to other figures as needed.
E. Any equations should be offset, as in a textbook, and each equation should have a number. Refer to equations by number. Use the equation editor in microsoft word to prepare your equations.
F. The last paragraph should summarize the overall outcome of the report.
Get started early.
Take advantage of the UNR writing center to have them read your report draft to give you feedback on writing quality.

TOOLS:
A. Meteorological data can be obtained from the University of Wyoming web site.
B. Most (or all) computers readily accessible to all students, using their netID, have Google Earth, MSword, and Excel.
C. You can use your netID to also access these software packages through the UNR remote services application.
D. Description of balloon soundings of the atmosphere.
E. References to published papers and websites can be easily managed with EndNote. Scroll down to "Manage your references" for instructions.

4. a. Do problem 1.21. This is similar to problem 1.20. The answer is around 2.5 mm⁄sec. Show that the air speed is v=(dp⁄dt) RE ⁄ Ps where RE is Earth's radius and Ps is the average surface pressure and evaluate using Python (include in your report).
b. Obtain the surface pressure averaged from 1950 - 2019 for Dec/Jan/Feb and for June/July/August from reanalysis (two figures). [This data is from NCEP/NCAR. One objective of this problem is to become aware of this data].
[Data from NOAA, Physical Science Laboratory, Monthly/Seasonal Climate Composites].
c. Does the pressure distribution support the premise of part a?
d. Discuss the seasonal variation of surface pressure in the Northern hemisphere in summer and winter, locations of highs and lows, and meteorological consequences. (open ended question).
This topic is discussed in this online dynamics textbook near Figure 2.3, the pertinent section is here.

 


Homework 0
.
Turn in this homework assignment through webCampus, using Microsoft Word.

Skew T lnP Practice homework based on the atmosphere of 27 August 2020:
Instructions: Place your results from parts 2, 3, 4, 5 and 7
into a Microsoft Word Document and submit it to Webcampus.
1. Download the blank skewT graph to Microsoft Paint, or your favorite image program.
2. From the Reno morning sounding, write down the temperature for pressures in mb of 846, 700, 500, 400, and 250 mb.
3. Put these points on the blank skewT graph using Paint and save your skewT image file.
4. Download the actual sounding for the morning and circle the temperature values at the pressures given in part 2.
5. Compare with your skewT from part 3 with the actual sounding in part 4 to make sure you are understanding these charts.
6. Bring questions to class.
7. Download the Slidell Louisiana (passing hurricane) 12Z sounding and compare with the Reno sounding. What do you see that's different?

Resources
Some skewT lnP applications and measurements.
Skew T lnP MetEd Module that covers nearly everything, starting with the basics.

 

 

 

FINAL PROJECT, START NOW!

Deliverables:
ATMS 411 in class presentation and turn in presentation here.
ATMS 611 in class presentation, report, and turn in presentation here.
Presentations are 5 to 20 minutes long.

Atmospheric Physics students take photographs of the atmosphere or environment, and explain the Atmospheric Physics connection.
For example, blue sky, sky polarization, coronas, halos, rainbows, lenticular clouds, gravity waves, lightning, water phase clouds, ice phase clouds,
inferring air motions and winds from cloud structures, contrails, vortices in contrails, sky color during pollution events, sky color near the horizon, sky color at sunset looking to the east.
Photographs of the dendritic nature of ice growing on windshields on cold days, the shape and nature of icicles, dew on a moist mornings are also possible topics.
Photographs of snow flakes and snow crystals, here's a discussion.
If you have special hobbies or work, like paragliding, Atmospheric Physics related aspects can be included in your project.
You can use soundings, satellite images, etc, to also help tell the story.

ATMS 411 students will do a presentation
ATMS 611 students will do a presentation and a report.

Resources that may help

Gravity wave discussion.
Snow crystal/flake observations.
Cloud identification.
NASA WorldView for satellite imagery. You can add layers for additional information.
National Weather Service balloon soundings, served by the Univ of Wyoming.

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