Disaggregating daily precipitations into hourly values with a transformed censored latent Gaussian process

Springer Science and Business Media LLC - Tập 29 Số 2 - Trang 453-462 - 2015
Allard, Denis1, Bourotte, Marc1
1UR546 Biostatistics and Spatial Processes (BioSP), INRA, Avignon, France

Tóm tắt

A problem often encountered in agricultural and ecological modeling is to disaggregate daily precipitations into vectors of hourly precipitations used as input values by crop and plant models. A stochastic model for rainfall data, based on transformed censored latent Gaussian process is described. Compared to earlier similar work, our transform function provides an accurate fit for both the body and the heavy tail of the precipitation distribution. Simple empirical relationships between the parameters estimated at different time scales are established. These relationships are used for the disaggregation of daily values at stations where hourly values are not available. The method is illustrated on two stations located in the Paris basin.

Tài liệu tham khảo

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