Nutrient Transport Modelling in the Daugava River Basin - DiVA Portal

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Appendix F. Regression l<strong>in</strong>es of reported and modelledmonthly and yearly valuesModelled76543210a) Monthly streamflow, calibration period (cm/month)y = 0,4771x + 1,0175R 2 = 0,36270 2 4 6 8 10 12ReportedModelled9876543210b) Monthly streamflow, validation period (cm/month)y = 0,6978x + 0,6178R 2 = 0,53340 2 4 6 8 10 12ReportedModelled1000080006000400020000c) Monthly nitrogen load, calibration period(ton/month)y = 0,4623x + 1245,9R 2 = 0,31770 2000 4000 6000 8000 10000 12000 14000ReportedModelledd) Monthly nitrogen load, validation period (ton/month)y = 0,4125x + 992,1R 2 = 0,4437140001200010000800060004000200000 5000 10000 15000 20000 25000ReportedModelled14012010080604020e) Monthly phosphorus load, calibration period(ton/month)y = 0,0146x + 16,562R 2 = 0,005800 200 400 600 800 1000ReportedModelled25020015010050f) Monthly phosphorus load, validation period(ton/month)y = 0,1834x + 1,7934R 2 = 0,183700 100 200 300 400 500 600ReportedFigure F1. Regressions of monthly reported and modelled values of streamflow,nitrogen load and phosphorus loads for calibration period and validation periodrespectively.36
Modelled4035302520151050a) Streamflow , calibration period (cm/year)y = 1,2114x 5,0907R 2 = 0,67280 5 10 15 20 25 30 35ReportedModelled35302520151050b) Streamflow, validation period (cm/year)y = 1,5776x 15,117R 2 = 0,81560 5 10 15 20 25 30 35ReportedModelled50000450004000035000300002500020000150001000050000c) Nitrogen load, calibration period (ton/year)y = 1,1719x 4889,3R 2 = 0,78280 10000 20000 30000 40000 50000ReportedModelled450004000035000300002500020000150001000050000d) Nitrogen load, validation period (ton/year)y = 0,7452x 3601,1R 2 = 0,57130 10000 20000 30000 40000 50000 60000ReportedModelled350300250200150100500e) Phosphorus load, calibration period (ton/year)y = 0,144x + 17,002R 2 = 0,49920 500 1000 1500 2000ReportedModelled400350300250200150100500f) Phosphorus load, validation period (ton/year)y = 0,2375x 55,489R 2 = 0,47020 500 1000 1500 2000ReportedFigure F2. Regressions of yearly reported and modelled values of streamflow, nitrogenload and phosphorus loads for calibration period and validation period respectively.37
Page 1 and 2: UPTEC W05 009Examensarbete 20 pFebr
Page 3 and 4: Nyckelord: avrinning, näringsämne
Page 6 and 7: APPENDIX C. DETERMINATION OF POTENT
Page 8 and 9: simulation system CatchmentSim. The
Page 10 and 11: Figure 1. The hydrological part of
Page 12 and 13: TemperaturePrecipitation20.00120deg
Page 14 and 15: 3.2 MODEL DESCRIPTION3.2.1 An overv
Page 16 and 17: Groundwater discharge to the river
Page 18 and 19: Groundwater nutrient loadsThe groun
Page 20 and 21: There is therefore no guarantee tha
Page 22 and 23: a) Streamflow, calibration periodb)
Page 24 and 25: 4.2 IMPACT OF THE CURVE NUMBER ON N
Page 26 and 27: the chosen value is a very rough ap
Page 28 and 29: all cultivated land will have winte
Page 30 and 31: HELCOM, 2004a. 30 years of protecti
Page 32 and 33: Appendix A. Input data and paramete
Page 34 and 35: Description of parameter/input Name
Page 36 and 37: Description of parameter/input Name
Page 38 and 39: moisture.Figure B1. Selection of cu
Page 40 and 41: wherea t = rainfall erosivity coeff

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