Data/hora: 04/06/2024 15:14:28

Biblioteca(s): 	Embrapa Cerrados.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Circulação/Nível: 	A - 1	
Data corrente: 	20/08/2021	
Data da última atualização: 	20/08/2021	
Autoria: 	ALTHOFF, D.; RODRIGUES, L. N.	
Afiliação: 	DANIEL ALTHOFF; LINEU NEIVA RODRIGUES, CPAC.	
Título: 	Goodness-of-fit criteria for hydrological models: Model calibration and performance assessment.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Journal of Hydrology, v. 600, 2021.	
Páginas: 	15 p.	
DOI: 	https://doi.org/10.1016/j.jhydrol.2021.126674	
Idioma: 	Inglês	
Conteúdo: 	ABSTRACT This study provides guidelines for the selection of proper goodness-of-fit criteria for the calibration and evaluation of hydrological models. Popular goodness-of-fit criteria and good practices for hydrological modeling are reviewed. The review discusses the advantages and disadvantages of several criteria and is followed by a case study that focuses on the review?s main findings. The main recommendation is for hydrologists to avoid using threshold values to assess model performance and preferably set a proper benchmark series. The case study was developed using the GR5J hydrological model and data from 179 watersheds in the Brazilian Cerrado biome. Several single- and multi-objective functions are used in optimization runs to assess the outcome for different goodness-of-fit criteria. The model performance is evaluated for each optimization run considering overall conditions, i.e., entire time series, and conditions under low- and peak-flow conditions. The study case reinforces that the popular Nash-Sutcliffe efficiency index should be avoided as an objective function. Alternatively, the Kling-Gupta efficiency index showed to be a more reliable criterion, resulting in lower bias for both calibration and validation, and balanced results for both low- and peak-flow conditions. Additionally, combining different criteria in multi-objective functions can result in robust trade-offs. General guidelines are summarized and additional emphasis is given to tropical watersheds where low flows deserve due attention.	
Palavras-Chave: 	Assinatura hidrológica; Bacia hidrográfica tropical; Modelo GR5J; Otimização de enxame de particulas; Otimização multi-objetivo.	
Thesagro: 	Recurso Hídrico.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
Exemplares: 	CPAC - (37017-1) - UPC - AP - DD - DIGITAL -  - DIGITAL - DIS