P and R Factors are too low

[Rahmatullah Sadiqi]

Hello dear users!!

I have done 300 simulations for calibration, as you can see in the pictures attached I have got a good NSE and R2 but P and R factors are very small, how can I increase it?

Iteration1- PLAPS and TLAPS

Iteration2- Snow parameters

Iteration3-  Calibration

Thanks

[2w2e]

Perhaps you should include other flow parameters.

[Rahmatullah Sadiqi]

Thank you so much for your quick response.

I have done sensitivity analysis (1000 simulations for 20 parameters) then I chose 7 the most sensitive parameters for calibration and validation  but I still get low value for p and r factors with a NSE and R2 over 0.7.

Calibration

p = 0.42

r = 0.75

Validation

p = 0.67

r = 0.76

is it acceptable? or is there any way to increase the p factor.

Iteration1- PLAPS and TLAPS (100 simulations)

Iteration2- 5 Snow parameters (500 simulations)

Iteration3-  Calibration            (500 simulations)

Iteration4-  validation            (500 simulations)

The attached pictures are from calibration.

Thank you in advance

[Suraj Shah]

It is like when we do iterations over and over NSE and RE may increase but r and p factor decrease..so sometimes only increase in nse and r2 doesn't signify successful calibration..

--
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 on the web visit https://groups.google.com/d/msgid/swat-cup/74b350ad-94a8-4326-ba3a-7849e42e6c30n%40googlegroups.com.

[Rahmatullah Sadiqi]

Thank you Mr. Shahs

I am agree with you. But my question is how can I increase p an r factors. 

I have done 500 simulation with 7 the most sensitive parameters but I still can't get a p factor above 0.7.

[Dilip Barman]

You could check it by changing the parameters range to improve the p value ..... so that p>0.7 and r value <1.2

To view this discussion on the web visit https://groups.google.com/d/msgid/swat-cup/dd8e74fa-6794-46ab-8611-4971729d5c42n%40googlegroups.com.

--

Regards, 

Dilip

[thesj...@gmail.com]

You might try applying one or two iterations using parameters combined from Iteration1 and Iteration2. You might not be able to get a good snow calibration if the other parameter are way off, so doing it all at once (parameters combined) might give you a different (better?) result.

Steve

[thesj...@gmail.com]

Sorry, I meant to say Iteration2 and Iteration3.

Steve

[Rahmatullah Sadiqi]

thank you all 

I will try that way too.

[Lemma Adane]

Dear fam,

I have encountered the SWATCUP error  as forrtl: sever (29)........fort:137

Is there  any body who get encountered similar challenge and solved? can share us please?