Assessing the impact of climate on annual and seasonal discharges at the Sremska Mitrovica station on the Sava River, Serbia

Leščečen, Igor (author), Šraj, Mojca (author), Pantelić, Milana (author), Dolinaj, Dragan (author)

Flood frequency analyses was performed on annual maxima series for 90 years (1928-2017) of discharge data recorded at the Sremska Mitrovica gauging station on the Sava River. The three-parameter distributions (PearsonIII, Log-PearsonIII) are more suitable for modelling annual maxima than distribution functions with only two parameters (Normal, Log-normal, Gumbel). The Mann-Kendall test statistic indicated that there is no statistically significant trend identified in annual maximum discharges or average annual discharges. A positive increasing trend was observed in annual temperature, while annual precipitation shows a decreasing trend which is non-significant. The seasonality analysis found a statistically non-significant weak negative trend in discharge in spring, summer and autumn and a statistically non-significant weak positive trend in winter. During winter, spring, and summer a non-significant negative trend in precipitation was observed, while autumn has experienced a statistically significant increasing trend. Temperatures show a positive trend in all seasons, but only temperatures during the warm period show a statistically significant increase. The results demonstrate that decreasing discharges of the Sava River at the Sremska Mitrovica gauging station are mainly the consequence of decreasing precipitation and increasing temperature (increasing evaporation), which is consistent with the results of other studies of the region.

• Language: English
• Keywords: hydrology, discharge, flood frequency analysis, L-moments, seasonality, trends
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.01.2022
• Year: 2022
• Number of pages: Str. 195-207
• Numbering: Letn. 22, št. 1
• PID: 20.500.12556/RUL-131843
• UDC: 502/504:556.1
• ISSN on article: 1606-9749
• DOI: 10.2166/ws.2021.277
• COBISS.SI-ID: 75172355
• Publication date in RUL: 04.10.2021

Record is a part of a journal

• Title: Water science and technology: water supply
• Shortened title: Water sci. technol.: water supply
• Publisher: IWA Publishing
• ISSN: 1606-9749
• COBISS.SI-ID: 5525018

Secondary language

• Language: Slovenian
• Keywords: hidrologija, pretok, verjetnostna analiza poplav, momenti L, sezonskost, trendi

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0180
• Name: Vodarstvo in geotehnika