A Neural Network Nonlinear Multimodel Ensemble to Improve Precipitation Forecasts over Continental US
Joint Authors
Krasnopolsky, Vladimir M.
Lin, Ying
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-06
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A novel multimodel ensemble approach based on learning from data using the neural network (NN) technique is formulated and applied for improving 24-hour precipitation forecasts over the continental US.
The developed nonlinear approach allowed us to account for nonlinear correlation between ensemble members and to produce “optimal” forecast represented by a nonlinear NN ensemble mean.
The NN approach is compared with the conservative multi-model ensemble, with multiple linear regression ensemble approaches, and with results obtained by human forecasters.
The NN multi-model ensemble improves upon conservative multi-model ensemble and multiple linear regression ensemble, it (1) significantly reduces high bias at low precipitation level, (2) significantly reduces low bias at high precipitation level, and (3) sharpens features making them closer to the observed ones.
The NN multi-model ensemble performs at least as well as human forecasters supplied with the same information.
The developed approach is a generic approach that can be applied to other multi-model ensemble fields as well as to single model ensembles.
American Psychological Association (APA)
Krasnopolsky, Vladimir M.& Lin, Ying. 2012. A Neural Network Nonlinear Multimodel Ensemble to Improve Precipitation Forecasts over Continental US. Advances in Meteorology،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-488131
Modern Language Association (MLA)
Krasnopolsky, Vladimir M.& Lin, Ying. A Neural Network Nonlinear Multimodel Ensemble to Improve Precipitation Forecasts over Continental US. Advances in Meteorology No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-488131
American Medical Association (AMA)
Krasnopolsky, Vladimir M.& Lin, Ying. A Neural Network Nonlinear Multimodel Ensemble to Improve Precipitation Forecasts over Continental US. Advances in Meteorology. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-488131
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-488131