Hi,
I am working with a SWAT model to evaluate variations in water balance components.
I calibrated my swat model with hydrological parameters results from swat-cup (sufi-2). Now, NSE and R2 >0.7 in calibration and validation series with observed flow_out (m3/s), etc. etc.
I need to incorporate climate change data in swat. We have prepared the average of many GCMs with regionalization technique used in Spain, and after I have modified these future series to the file format required by SWAT (.txt).
My question is: in ArcSWAT 2012.10.2.18, in “Write input tables/ Weather data definition”:
-Do I only have to select my future precipitation and temperature series?????
-Is it necessary to remove my previous precipitation and temperature series (1980-2016 daily)????? (I add image).
Best,
Antonio
Dear Christoph, thanks for your answer,
I think I will do the second way you explain me. It seems easier.
1º-First, I ´m going to remove my previous (historic period) precipitation, tmax and tmin data (.txt). I will update my new climate change series of precipitation, tmax and tmin data (.txt) using the “Weather data definition”.
2º-I will rewrite the “swat database tables” and “update” it.
3º-Then, with “Manual Calibration helper”, I will incorporate in ArcSWAT again my best parameter set from SWAT-CUP (Sufi-2).
4º-I will rewrite swat input files and run the model.
Are these steps correct really??
With regards,
Antonio.
Dear Alper, thanks for your answer,
With “spin-up period”, are you speaking about the warm-up period (NYSKIP) ????
I had stablished it in NYSKIP=2 for all my simulations.
Do you recommend at least 4 years?? Then, are the results better??
With regards,
Antonio.
Dear all, thanks for your answer,
You have helped me a lot :))) with your comments I have understood better the warm-up period idea.
With regards,
Antonio.