A Comparison of Different Methods for Rainfall Imputation: A Galician Case Study

With the ultimate goal of developing models that involve the use of environmental variables, a GIS-based application is being developed that is circumscribed to the region of Galicia (Spain). Ten-minute data of six meteorological variables were collected from 150 stations of the MeteoGalicia network...

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Bibliographic Details
Published in:Applied sciences 2023-11, Vol.13 (22), p.12260
Main Authors: Vidal-Paz, José, Rodríguez-Gómez, Benigno Antonio, Orosa, José A.
Format: Article
Language:English
Subjects:
Altitude
Autumn
Case studies
Coasts
Comparative analysis
Discriminant analysis
Geographic information systems
imputation
Methods
Missing data
Mountains
Precipitation
Rain
Rain and rainfall
rainfall
Time series
Winter
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Summary:With the ultimate goal of developing models that involve the use of environmental variables, a GIS-based application is being developed that is circumscribed to the region of Galicia (Spain). Ten-minute data of six meteorological variables were collected from 150 stations of the MeteoGalicia network over a period of 18 years, but the time series data are not complete. In order to estimate missing rainfall data, four imputation methods were evaluated in this study: missForest, MICE, Amelia II, and inverse distance weighting (IDW). Crossvalidation results show that the precipitation is out of phase in the different stations due to their geographical locations, and the imputation can be improved with a displacement of the time series; on the other hand, the missForest method provided better results in the imputation of this meteorological variable than the MICE, Amelia, or IDW.
ISSN:2076-3417
2076-3417
DOI:10.3390/app132212260