Skip to content

Fixes for fire perimeter - #7

Merged
pedro-jm merged 3 commits into
NOAA-EMC:emc/developfrom
NCAR:fixes_for_ufs
Jul 8, 2026
Merged

Fixes for fire perimeter#7
pedro-jm merged 3 commits into
NOAA-EMC:emc/developfrom
NCAR:fixes_for_ufs

Conversation

@mkavulich

@mkavulich mkavulich commented Jun 18, 2026

Copy link
Copy Markdown

Testing the most recent version of the UFS fire behavior code has shown some unexpected results. The default case in the SRW Application prior to the latest changes (ufs-community/ufs-srweather-app#1376) showed reasonable results. However, after those changes, the fire perimeter after 6 hours showed some anomalies:

ncview fire_area_081400

After 16 hours the simulation was completely unrealistic:

ncview fire_area_081410

And the simulation stopped after ~18 hours due to the fire reaching the boundary.

The fixes are as follows:

  • Return the pseudo time coefficient (reinit_pseudot_coef) to its previous default value of 0.0001. This resulted in an improvement but still anomalous results:
image
  • Restore the 1st order ENO scheme to its previous version

After these changes, the results at long lead times again look realistic:

image

@mkavulich mkavulich changed the title Fixes for ufs Fixes for fire in ufs Jun 18, 2026
@mkavulich mkavulich changed the title Fixes for fire in ufs Fixes for fire perimeter Jun 18, 2026
@gspetro-NOAA

Copy link
Copy Markdown

Testing completed successfully for ufs-community/ufs-weather-model#3267. @pedro-jm This PR can be merged.

@pedro-jm
pedro-jm merged commit f20d0bd into NOAA-EMC:emc/develop Jul 8, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

3 participants