Neural networks for rainfall forecasting by atmospheric downscaling

J. Olsson, C. B. Uvo, K. Jinno, A. Kawamura, Koji Nishiyama, N. Koreeda, T. Nakashima, O. Morita

研究成果: ジャーナルへの寄稿記事

61 引用 (Scopus)

抄録

Several studies have used artificial neural networks (NNs) to estimate local or regional precipitation/rainfall on the basis of relationships with coarse-resolution atmospheric variables. None of these experiments satisfactorily reproduced temporal intermittency and variability in rainfall. We attempt to improve performance by using two approaches: (1) couple two NNs in series, the first to determine rainfall occurrence, and the second to determine rainfall intensity during rainy periods; and (2) categorize rainfall into intensity categories and train the NN to reproduce these rather than the actual intensities. The experiments focused on estimating 12-h mean rainfall in the Chikugo River basin, Kyushu Island, southern Japan, from large-scale values of wind speeds at 850 hPa and precipitable water. The results indicated that (1) two NNs in series may greatly improve the reproduction of intermittency; (2) longer data series are required to reproduce variability; (3) intensity categorization may be useful for probabilistic forecasting; and (4) overall performance in this region is better during winter and spring than during summer and autumn.

元の言語英語
ページ(範囲)1-12
ページ数12
ジャーナルJournal of Hydrologic Engineering
9
発行部数1
DOI
出版物ステータス出版済み - 1 1 2004

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downscaling
Rain
Neural networks
rainfall
precipitable water
precipitation intensity
Precipitation (meteorology)
artificial neural network
train
Catchments
river basin
experiment
wind velocity
autumn
Rivers
Experiments
winter
summer
Water

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Civil and Structural Engineering
  • Water Science and Technology
  • Environmental Science(all)

これを引用

Neural networks for rainfall forecasting by atmospheric downscaling. / Olsson, J.; Uvo, C. B.; Jinno, K.; Kawamura, A.; Nishiyama, Koji; Koreeda, N.; Nakashima, T.; Morita, O.

:: Journal of Hydrologic Engineering, 巻 9, 番号 1, 01.01.2004, p. 1-12.

研究成果: ジャーナルへの寄稿記事

Olsson, J, Uvo, CB, Jinno, K, Kawamura, A, Nishiyama, K, Koreeda, N, Nakashima, T & Morita, O 2004, 'Neural networks for rainfall forecasting by atmospheric downscaling', Journal of Hydrologic Engineering, 巻. 9, 番号 1, pp. 1-12. https://doi.org/10.1061/(ASCE)1084-0699(2004)9:1(1)
Olsson, J. ; Uvo, C. B. ; Jinno, K. ; Kawamura, A. ; Nishiyama, Koji ; Koreeda, N. ; Nakashima, T. ; Morita, O. / Neural networks for rainfall forecasting by atmospheric downscaling. :: Journal of Hydrologic Engineering. 2004 ; 巻 9, 番号 1. pp. 1-12.
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