I was trying to move from Sediment, NO3, NH4, TN, and TP load to TSS, NO3, NH4, TN, and TP concentrations in my SWAT simulations. I found that in using the load data, the fit (i.e., model results to observations) provides a bias from a good fit to flow.
Would you advise how to input concentration (mg/L) of sediment, Total nitrogen, and total phosphorus in SWAT-cup calibration instead of the loads? As you can see in the SWAT-output.rch file, screenshot, SWAT simulates these variables as a load, but I need to calibrate with concentration observed data. How can I force SWAT/SWATCUP to calibrate with concentration data instead of the load? Kindly let me know. Thank you.