Performance Assessment of a 3D Hydrodynamic Model Using High Temporal Resolution Measurements in a Shallow Urban Lake
- 480 Downloads
Urban lakes provide many ecosystem services, e.g., flood control, nature protection, coolness island, recreation. Hydrodynamic models will increasingly be used to enhance these benefits. We present the first validation of a three-dimensional (3D) hydrodynamic model on a small shallow lake with high resolution and high frequency measurements. Lake Créteil, France (area 0.4 km2, mean depth 4.5 m, and catchment area 1 km2) is a former gravel pit and now part of a regional park. The model Delft3D-FLOW was calibrated on a one-month period, with continuous measurements of temperature at five depths at the center of the lake and at three depths at two other stations, and with current speed profiles at the centre of the lake. The model was then verified on 18 1-month periods with similar temperature measurements. The model reproduced very well the temperature dynamics, including the alternation between mixing and stratification periods and internal wave patterns. The mean absolute errors over the five depths at the central point remained below 0.55∘C in spring and summer, the most favorable seasons for phytoplankton growth. Horizontal temperature differences, which rose up to 3∘C at the beginning of stratification periods, were also well reproduced, as well as current speeds. These results are very promising for assessing nutrient and pollutant diffusion, settling and resuspension, as well as for understanding how phytoplankton blooms start in small shallow lakes.
KeywordsThree-dimensional hydrodynamic model Model calibration High frequency measurements Shallow lake
The research presented in this paper was funded by grants from École des Ponts ParisTech, Région Île-de-France (research project PLUMMME), the Climate KIC (Blue Green Dream project), École doctorale SIE (Université Paris-Est). We acknowledge the French National Research Agency (ANR, research project PULSE) and the OSU EFLUVE for equiment funding. We also acknowledge the nke team for the sensor technical assistance and Département du Val de Marne, Ville de Créteil and Base de loisirs du lac de Créteil for their logical support in the field campaigns. The University of São Paulo (Brazil) supported the sabbatical stay of José R. Scarati Martins at Leesu/École des Ponts ParisTech. Finally we would like to thank Rob Uittenbogaard (DELTARES) and Frans Van de Ven (TU Delft) for fruitful discussions.
- 1.Meybeck, M. (1995). Global distribution of lakes. In Lerman, A, Imboden, D, & Gat, J (Eds.), Physics and chemistry of lakes (pp. 1–35). Berlin: Springer-Verlag.Google Scholar
- 5.Medrano, E.A., Uittenbogaard, R.E., Pires, L.M.D., van de Wiel, B.J.H., & Clercx, H.J.H. (2013). Coupling hydrodynamics and buoyancy regulation in Microcystis aeruginosa for its vertical distribution in lakes. Ecological Modelling, 248, 41–56.Google Scholar
- 6.Chanudet, V., Fabre, V., & van der Kaaij, T. (2012). Application of a three-dimensional hydrodynamic model to the Nam Theun 2 Reservoir (Lao PDR). Journal of Great Lakes Research, 38(2), 260–269.Google Scholar
- 7.Zhu, Y., Yang, J., Hao, J., & Shen, H. (2009). Numerical simulation of hydrodynamic characteristics and water quality in Yangchenghu Lake. Advances in Water Resources and Hydraulic Engineering, 1-6, 710–715.Google Scholar
- 10.Garnier, J. (1992). Typical and atypical features of phytoplankton in a changing environment - 8 years of oligotrophication in a recently created sand-pit lake (creteil lake, paris suburb, france). Archiv Fur Hydrobiologie, 125 (4), 463–478.Google Scholar
- 11.Deltares. (2013). Delft3D-FLOW user manual. The Netherlands: Delft.Google Scholar
- 12.Gill, A.E. (1982). Atmosphere-Ocean Dynamics (International Geophysics Series, Volume 30). Academic Press.Google Scholar
- 13.Lane, A. (1989). The heat balance of the North Sea. Birkenhead, Proudman Oceanographic Laboratory, 46pp. Proudman Oceanographic Laboratory, Report No. 8.Google Scholar
- 14.UNESCO. (1981). Tenth report of the joint panel on oceanographic tables and standards, Technical papers in marine science 36. Paris: France.Google Scholar
- 17.Curtarelli, M.P., Alcantara, E., Renno, C.D., Assireu, A.T., Bonnet, M.P., & Stech, J.L. (2014). Modelling the surface circulation and thermal structure of a tropical reservoir using three-dimensional hydrodynamic lake model and remote-sensing data. Water and Environment Journal, 28(4), 516–525.CrossRefGoogle Scholar