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Daily runoff forecasting using a cascade long short-term memory model that considers different variables
Bai, Yun (Author), Bezak, Nejc (Author), Zheng, Chuan-Bo (Author), Li, Chuan (Author), Sapač, Klaudija (Author), Zhang, Jin (Author)

URLURL - Source URL, Visit https://doi.org/10.1007/s11269-020-02759-2 This link opens in a new window

Abstract
Accurate forecasts of daily runoff are essential for facilitating efficient resource planning and management of a hydrological system. In practice, daily runoff is needed for various practical applications and can be predicted using precipitation and evapotranspiration data. To this end, a long short-term memory (LSTM) under a cascade framework (C-LSTM) approach is proposed for forecasting daily runoff. This C-LSTM model is composed of a 2-level forecasting process. (1) In the first level, an LSTM is established to learn the relationship between the precipitation and evapotranspiration at present and to learn several meteorological variables one day in advance. (2) In the second level, an LSTM is constructed to forecast the daily runoff using the historical and simulated precipitation and evapotranspiration data produced by the first LSTM. Through cascade modeling, the complex features of the numerous targets in the different stages can be sufficiently extracted and learned by multiple models in a single framework. In order to evaluate the performance of the C-LSTM approach, four mesoscale sub-catchments of the Ljubljanica River in Slovenia were investigated. The results indicate that based on the root-mean-square error, the Pearson correlation coefficient, and the NashSutcliffe model efficiency coefficient, the proposed model yields better results than two other tested models, including the normal LSTM and other neural network approaches. Based on the results of this study, we conclude that the LSTM under the cascade architecture is a valuable approach and can be regarded as a promising model for forecasting daily runoff.

Language:English
Keywords:long short-term memory, cascade framework, meteorological conditions, precipitation-evapotranspiration pattern, daily runoff forecast
Work type:Scientific work (r2)
Tipology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2021
Submitted for review:08.07.2020
Article acceptance date:29.12.2020
Article publication date:19.02.2021
Number of pages:Str. 1167-1181
Numbering:št. 293, ǂLetn.ǂ35
UDC:551.5:556
ISSN on article:0920-4741
DOI:10.1007/s11269-020-02759-2 This link opens in a new window
COBISS.SI-ID:54074115 This link opens in a new window
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Downloads:107
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Record is a part of a journal

Title:Water resources management
Shortened title:Water resour. manag.
Publisher:Reidel
ISSN:0920-4741
COBISS.SI-ID:512526105 This link opens in a new window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:
Name:Bilateralni projekt Slovenija-Kitajska, J2-7322, P2-0180

Secondary language

Language:Slovenian
Keywords:data mining, kaskadni sistem, meteorološki pogoji, padavine-evapotranspiracija, pretok

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