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Gridded daily precipitation using machine learning - case study for Croatia (CROSBI ID 661896)

Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija

Perčec Tadić, Melita ; Hengl, Tom Gridded daily precipitation using machine learning - case study for Croatia // Geophysical research abstracts. 2018. str. 1-1

Podaci o odgovornosti

Perčec Tadić, Melita ; Hengl, Tom

engleski

Gridded daily precipitation using machine learning - case study for Croatia

While spatio-temporal structures of a long term climatological fields are shaped by climatic factors like elevation, distance to the water bodies, solar cycle or prevailing air masses, meteorological fields on a shorter temporal scales, down to daily and hourly, are shaped by current weather situation and only partially depend on constant climate factors. This presents the challenge for spatio-temporal analysis leading to the development of the new methods, or adopting existing ones form other research domains. Data analyzed are daily precipitation sums from 500 precipitation stations for the 50 000 square kilometers of the climatologically diverse area of Croatia from the 2005-2010 period, that is around one million of precipitation records. The new method of Random Forest, as a generic framework for generating spatial and spatio-temporal predictions from point samples, is applied, with novel approach that accounts for spatial auto- correlation in the target variables, and which allows for incorporating spatial autocorrelation and geographical proximity effects into prediction process. The ordinary kriging geo-statistical method is used for comparison of the accuracy measures, as a method used in many operational daily precipitation products like daily precipitation sums in the Netherlands (urn:xkdc:ds:nl.knmi::Rd1/5/).

daily precipitation, grid, machine learning

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Podaci o prilogu

1-1.

2018.

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objavljeno

Podaci o matičnoj publikaciji

Geophysical research abstracts

Beč: Copernicus Publications

1607-7962

Podaci o skupu

EGU General Assembly 2018

poster

08.04.2018-13.04.2018

Beč, Austrija

Povezanost rada

Geofizika