final_program_abstracts[1]

11 IMSC Session Program
Spatial patterns and variability of dry spells in Croatia
Friday - Poster Session 7
Ksenija Cindrić 1 and Zoran Pasarić 2
1 Meteorological and Hydrological Service of Croatia, Zagreb, Croatia
2
Department of Geophysics, Faculty of Science, University of Zagreb, Zagreb,
Croatia
Seasonal and annual dry spells are analysed employing daily precipitation data from
25 meteorological stations in Croatia. The analysis is based on four precipitation-perday
thresholds (0.1, 1, 5 and 10 mm) and covers the time period 1961-2000. The
climatology of dry spells indicates three main climatic regions: mainland, highland
and coastal region. Attempting to find the joint spatial and temporal variations of
mean and maximum dry spells in Croatia, the Empirical Orthogonal Function (EOF)
analysis is performed. In order to fit the empirical frequency distributions of dry spells
the goodness of fit of several statistical distributions is tested. A comprehensive
analysis of time trends of mean and maximum dry spells is performed including a
piecewise estimation of local trends by means of Kendall’s tau slope estimator.
Abstracts 304