Contents

Week 8 overview

Week 8 overview

Learning Objectives:

  1. ERA-5 Reanalysis One-Day Case Study with Xarray

Retrieve, analyze, and visualize 24 hours of reanalysis data for a single date of your choice (Class example: “Cleveland Superbomb” of January 1978)

  1. Git and GitHub: Version Control continued

Learning and Participation Activities with Due Dates (Mon. Oct. 17, Noon EDT):

  1. Xarray data analysis and visualization notebooks

    a. cd to your /spare11/atm533/<NetID> directory

    b. Clone Kevin’s week8 folder: git clone /spare11/atm533/ktyle/week8

    c. Open up a JupyterLab session on Turing

    d. Browse to your atm533/week8 directory

    e. Work through the ERA5OneDayCaseStudy notebook

    f. As directed at the end of this notebook, make a copy of it, and then re-run it for a date and region of your choice

    g. Create at least one new notebook that visualizes different variables/levels for the same date


  2. Team assignments:

Each of you now have directories in your atm533 folder corresponding to the team to which you were assigned. These directories are actually links to the actual directory; you, your team members, and the instructor all have write permissions to this folder.

Please follow these steps to initialize this team directory as a git repository:

a. cd to your team folder (this exists as a link within your atm533 folder, as well as in /spare11/atm533/teams)

b. Initialize this folder as a git repository: type git init

c. (One of the team members does this): Copy /spare11/atm533/ktyle/group/.gitignore into your team folder

d. (Another one of the team members does this): Create a README.md text file that includes the name of your team, and the team members

e. (Select a team member to do this): Create two subfolders in your team folder: testing and midterm

f. (Select a different team member to do this): Stage and commit the changes you have made so far in your team folder: be sure you are cd’d into your team folder at this point!! - git add . - git commit -m “Initial commit”

  1. Team project:

  • If you haven’t already, please confer among your team members and select a weather event of interest. The ERA-5 reanalysis extends from January 1 1950 through July 31 2022 on RDA.

  • A more detailed document will follow, but you will be expected to cooperatively create four notebooks, similar to the one demoed this week, each of which displays unique fields/levels from ERA-5. The output of these notebooks will be PNG files that can be displayed on our Science on a Sphere. Further instructions on how to make your maps “SoS-ready” will follow.

  • The due date of the project is Wednesday, November 2, 2022.


  1. Post any questions you have on the Week 8 Blackboard Class Community Forum.

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Week 8: 10/10

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Xarray and ERA5