2026.3.1

Major changes:

• Using parallel computing for probabilistic application of SimpleBox
• Add option to include correlation between distributions of input parameters
• Several smaller fixes and improvements
  • Bugfix: Remove ChemClass variable from environment, to avoid later issues when running the model in parallel
  • Cleanup: Remove unused variable CORG.susp

Major breaking change:
Runoff and outflow from w0 (lake) and w1 (river) is now calculated based on precipitation.
This changes the outcome and needs to be considered when using this version of SimpleBox for existing scenario's.
The change allows for more flexibility in changing landscape scenario's and dividing the watershed across scales.

For documentation illustrating the changes between release 2025.04.0 and this release see 2025.4.0_comparison_with_2026.3.1.md

What's Changed

• Add comparison to verify the update to 2026.3.x by @jormercury in #199
• Release 2026.3.1 by @anne-hids in #197

Full Changelog: 2026.3.0...2026.3.1