Lower NSE after calibration

[yiwen m]

Hi all, 

I'm working on calibrating monthly streamflow, and I've encountered a challenge. My initial NSE was 0.71. After calibration, it unfortunately dropped to 0.57. I've run five iterations, each with 1000 simulations, but the NSE hasn't improved.

I'm wondering if anyone has insights into potential issues I might be overlooking? I've attached a screenshot of the  95PPU plot for reference.

Any suggestions would be greatly appreciated! Thanks so much.

[omc...@gmail.com]

Hi Yiwen,

It seems that your project default values are giving you a good result. If you wanna maximize your NSE, I suggest you first to analyze which parameters are you modifying and see theirs sensitivity and default values. After that, try to see the ranges that increases your NSE and try to calibrate in that range. 

As a comment, you should include your inf_par to better understand what you did and give us insight on your pottential issues!

Regards,

Oscar

[yiwen m]

Hi Oscar, 

Thank you for your insightful reply and suggestions.

I previously adjusted the parameters based on the sensitivity test, following the guidance in the manual. Also, I have attached the par_inf.txt file for your kind review.

Thanks again. 

Best regards
Yiwen

Mok Yi Wen
Postgraduate student

Faculty Of Engineering
Universiti Putra Malaysia

--
You received this message because you are subscribed to the Google Groups "SWAT-CUP" group.
To unsubscribe from this group and stop receiving emails from it, send an email to swat-cup+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/swat-cup/56fe4a7d-be5b-4aeb-bfb3-de407ad056b0n%40googlegroups.com.

[omc...@gmail.com]

Hi,

Was your model set up using SWAT or SWAT+? Some parameters in your par_inf do not appears on the Absolute_SWAT_Values.txt.

Regards,

Oscar

[yiwen m]

Hi Oscar,

I set up the model using SWAT+, hence calibrating using the parameters from SWAT+ as well. 

Best regards
Yiwen

Mok Yi Wen
Postgraduate student

Faculty Of Engineering
Universiti Putra Malaysia

To view this discussion visit https://groups.google.com/d/msgid/swat-cup/f13f4667-d3cc-47ae-8c3f-0eedf8199430n%40googlegroups.com.