Enquiry on obtaining parameter sets from SWAT Toolbox for calibration uncertainty analysis

[Sreeraj Sreenivas]

Dear sir,

I hope you are doing well.

I am currently using SWAT+ Toolbox for model calibration using DDS algorithm and would like to enquire about the possibility of obtaining different parameter sets generated during the calibration process. My objective is to use these parameter sets to quantify and plot parameter uncertainty (e.g., uncertainty bands, parameter distributions, and related diagnostics).

Specifically, I would like to understand:

• Whether SWAT Toolbox allows exporting all accepted or sampled parameter sets from the calibration runs, and

• If so, what would be the recommended workflow or output files to use for extracting these parameter sets for further post-processing and uncertainty analysis.

Access to these parameter sets would greatly help in evaluating parameter uncertainty and looking to equifinality problem. This will improve the robustness of my calibration results.

I would be grateful for any guidance or documentation you could share regarding this functionality.

Thank you very much for your time and support.

Kind regards,
Sreeraj Sreenivas
Research Scholar
Department of Civil Engineering
IIT Palakkad