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SIERRA Release Notes

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This version implements the core functionality of SIERRA ATD and marks the first official release.

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This version introduces a new and improved user interface and fixes the following bugs:

  • Ensures that the user-selected diffusion option is used by the backend.
  • Fixes the wind rose legend to display when wind speeds are the same value or if wind directions are missing.
  • Fixes the stack flow from being ignored in the Control Room module.
  • Corrects the half-lives in the Routine Release module to correctly use the 2.26 days.

Full release notes can be found here: https://gitlab.com/RCD-1/SIERRA/ATD/-/wikis/Home/Version-History/Version-2.0 

Page Last Reviewed/Updated Tuesday, September 29, 2026