Hydrological Modeling in Northern Tunisia with Regional Climate Model Outputs: Performance Evaluation and Bias-Correction in Present Climate Conditions
Abstract
:1. Introduction
2. Study Area and Data
2.1. Ground Hydro-Climatic Data
2.2. Regional Climate Models Data
3. Methodology
3.1. Hydrological Modeling
3.2. RCM Outputs Evaluation
3.3. Correction of the RCM outputs
3.4. Drizzle Day Correction
4. Results
4.1. Hydrological Model Calibration Result Using Ground Data
η | σ | Monthly RMSE (Calibration) | Decadal RMSE (Calibration) | Monthly RMSE(Validation) | Decadal RMSE (Validation) |
---|---|---|---|---|---|
0.53 | 0.14 | 14.7 | 3.1 | 15.9 | 3.3 |
4.2. Evaluation of RCM Simulated Air Temperature
Monthly Temp. Bias | SMH | ARP | DMI | ICT |
---|---|---|---|---|
September | 2.3 | 1.6 | −2.6 | 2.8 |
October | 2.3 | 2.4 | −2.1 | 3.1 |
November | 1.5 | 3.1 | −2.1 | 2.0 |
December | 1.3 | 3.1 | −1.5 | 1.8 |
January | 1.3 | 3.6 | −0.7 | 1.8 |
February | 1.3 | 2.8 | −0.8 | 1.8 |
March | 0.8 | 2.1 | −0.8 | 1.1 |
April | 0.7 | 1.1 | −0.8 | 0.8 |
May | 1.1 | −0.2 | −1.1 | 0.5 |
June | 0.8 | −1.6 | −3.3 | 0.2 |
July | 0.7 | −1.1 | −4.6 | 0.8 |
August | 1.3 | 0.7 | −3.4 | 1.8 |
4.3. Evaluation of RCM Simulated Precipitation
Season | Observations | DMI | ICT | SMH | ARP |
---|---|---|---|---|---|
DJF | 44 | 0 | 13 | 22 | 0.4 |
MAM | 62 | 0 | 18 | 39 | 0.8 |
JJA | 92 | 0 | 43 | 69 | 0.3 |
SON | 59 | 0 | 17 | 36 | 0.2 |
4.4. Hydrological Simulations Driven by Bias-Corrected RCM Precipitation Outputs
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Foughali, A.; Tramblay, Y.; Bargaoui, Z.; Carreau, J.; Ruelland, D. Hydrological Modeling in Northern Tunisia with Regional Climate Model Outputs: Performance Evaluation and Bias-Correction in Present Climate Conditions. Climate 2015, 3, 459-473. https://doi.org/10.3390/cli3030459
Foughali A, Tramblay Y, Bargaoui Z, Carreau J, Ruelland D. Hydrological Modeling in Northern Tunisia with Regional Climate Model Outputs: Performance Evaluation and Bias-Correction in Present Climate Conditions. Climate. 2015; 3(3):459-473. https://doi.org/10.3390/cli3030459
Chicago/Turabian StyleFoughali, Asma, Yves Tramblay, Zoubeida Bargaoui, Julie Carreau, and Denis Ruelland. 2015. "Hydrological Modeling in Northern Tunisia with Regional Climate Model Outputs: Performance Evaluation and Bias-Correction in Present Climate Conditions" Climate 3, no. 3: 459-473. https://doi.org/10.3390/cli3030459