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An epilimnion and hypolimnion temperature model based on air temperature and lake characteristics

Abstract : Water temperature is an essential ecological variable that influences life beings at several organizational levels, but its monitoring at the regional level is costly. An alternative is using models, which summarise the knowledge of the functioning of the system so that they can be used to answer specific questions. We present a model to calculate the epilimnion and hypolimnion temperature of inland water bodies based on air temperature and on their geographical and morphological characteristics. The seven model parameters were parametrised by using official monitoring data and the satellite temperature data of the data set LakeSST for French water bodies. The performance of the parametrised model was compared to that of two widely used models (FLake and air2water with four parameters). The model showed a good performance in the simulation of epilimnion temperatures, especially in the summer. For hypolimnion temperatures the performance was worse, but still comparable to that of other models. Because of its good performance and the few data needed to run the model, it is a good choice for managers interested in the thermal behaviour of inland water bodies.
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Submitted on : Saturday, May 16, 2020 - 5:16:44 PM
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J. Prats, P.A. Danis. An epilimnion and hypolimnion temperature model based on air temperature and lake characteristics. Knowledge and Management of Aquatic Ecosystems, EDP sciences/ONEMA, 2019, 420 (8), pp.24. ⟨10.1051/kmae/2019001⟩. ⟨hal-02608983⟩

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