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Stream Temperature Modeling Using Functional Regression Models.


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Boudreault, Jérémie; Bergeron, Normand; St-Hilaire, André; Chebana, Fateh (2019). Stream Temperature Modeling Using Functional Regression Models. JAWRA Journal of the American Water Resources Association , vol. 55 , nº 6. p. 1382-1400. DOI: 10.1111/1752-1688.12778.

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Stream temperature is one of the most important environmental variables in lotic habitats as it has important and direct impacts on the ecosystem. Given the continuous nature of this variable, the aim of this paper was to introduce functional regression for the air‐stream temperature relation, being capable to model an entire seasonal or annual curve of temperatures as one entity, rather than multiple daily or weekly values in classical models. Three types of functional models were explored in the study and compared to two classical models (Generalized Additive Model and Logistic Model) for six rivers from the United States The results show the functional models have the best performance for all the considered rivers. When comparing functional models between them, one variant of the historical functional model performs better than the two other models and is the most parsimonious. Functional regression leads to encouraging results to model the complete annual stream temperature curve as one entity compared to other classical approaches.

Type de document: Article
Mots-clés libres: environmental indicators; temperature; stream temperature; statistics; functional regression; modeling
Centre: Centre Eau Terre Environnement
Date de dépôt: 17 avr. 2020 18:31
Dernière modification: 25 oct. 2020 04:00
URI: http://espace.inrs.ca/id/eprint/9703

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