Hi Peyman,
I apologize as I should have addressed this in your first request. May I ask how you found the Lesson S3 Calibration?
During the October 2018 training, we did demo a method for calibration and discuss things to consider when calibrating. However, we did not officially publicly release the calibration code because at this time we are still fine-tuning it and we can not officially support it.
It is surprising to me that you were able to find it since it is not in our public training github repo or listed on our training webpage.
That is why you do not find any documents in relation to the lesson that you found.
I appreciate that you are reaching out to the user community and user forum to ask questions.
But know that the WRF-Hydro team cannot support this at this time.
We do hope to supply the community with an official fully supported calibration code in the future.
Best regards,
Molly