Standard normal homogeneity test as a tool to detect change points in climate-related river discharge variation: case study of the Kupa River Basin (CROSBI ID 266050)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Pandzić, Krešo ; Kobold, Mira ; Oskoruš, Dijana ; Biondic, Božidar ; Biondić, Ranko ; Bonacci, Ognjen ; Likso, Tanja ; Curić, Oliver
engleski
Standard normal homogeneity test as a tool to detect change points in climate-related river discharge variation: case study of the Kupa River Basin
The study addresses homogeneity testing of annual discharge time series for eight hydrological stations and five annual climate time series for one weather station in the Kupa River Basin, between Slovenia and Croatia, and global annual average surface temperature time series for the period 1961–2010. The standard normal homogeneity test (SNHT) was used to detect both abrupt and gradual linear trend homogeneity breaks. The results reveal natural change points at the beginning of the 1980s. Absolute homogeneity testing of average annual weather station-level air pressure, annual precipitation, differences between precipitation totals and potential evapotranspiration and surface runoff from the independent observation time series confirmed an abrupt shift, also at the beginning of the 1980s. The trend of local air temperature for 1985–2000, which partly coincides with global surface temperature trend for 1974–2005, strengthened the river discharge regime shift since the beginning of the 1980s. These results could improve climate variation monitoring and estimation of the impact of climate variation on the environment in the area. Generally, an indication of climate regime change points and an assessment of their duration could provide significant benefits for the society.
time series, homogenization, homogeneity testing, Kupa River discharge, Slovenia, Croatia
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Podaci o izdanju
65
2020.
227-241
objavljeno
0262-6667
2150-3435
10.1080/02626667.2019.1686507
Povezanost rada
Fizika, Interdisciplinarne tehničke znanosti, Rudarstvo, nafta i geološko inženjerstvo