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Interpolation and Extrapolation of Precipitation Quantities in Serbia

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Author(s): Rastislav Stojsavljević | Stevan Savić | Dragan Milošević | Sanja Stojanov | Igor Leščešen | Vukica Majstorović

Journal: European Researcher
ISSN 2219-8229

Volume: 55;
Issue: 7-2;
Start page: 1980;
Date: 2013;
Original page

Keywords: precipitation quantities | interpolation | extrapolation | correlation coefficient | Serbia.

ABSTRACT
The aim of this paper is to indicate the problems with filling the missing data in precipitation database using interpolation and extrapolation methods. Investigated periods were from 1981 to 2010 for Northern (Autonomous Province of Vojvodina) and Proper Serbia and from 1971 to 2000 for Southern Serbia (Autonomous Province of Kosovo and Metohia). Database included time series from 78 meteorological stations that had less than 20% of missing data. Interpolation was performed if station had missing data for five consecutive months or less. If station had missing data for six consecutive months or more, extrapolation was performed. For every station with mising data correlation with at least three surrounding stations was performed. The lowest acceptable value of correlation coefficient for precipitation was set at 0,300
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