Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in Poland
Study region: 64 Polish rivers in Central Europe. Study focus: Despite their profound ecological and societal impacts, the dynamics of compound droughts and heatwaves (CDHWs) in river systems remain a largely uncharted territory. This study provides the first comprehensive assessment of riverine CDH...
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Elsevier
2025-10-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221458182500446X |
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| author | Jiang Sun Renata Graf Dariusz Wrzesiński Fabio Di Nunno Yi Luo Senlin Zhu Roohollah Noori Francesco Granata |
| author_facet | Jiang Sun Renata Graf Dariusz Wrzesiński Fabio Di Nunno Yi Luo Senlin Zhu Roohollah Noori Francesco Granata |
| author_sort | Jiang Sun |
| collection | DOAJ |
| description | Study region: 64 Polish rivers in Central Europe. Study focus: Despite their profound ecological and societal impacts, the dynamics of compound droughts and heatwaves (CDHWs) in river systems remain a largely uncharted territory. This study provides the first comprehensive assessment of riverine CDHWs, utilizing long-term river discharge and water temperature datasets from 64 Polish rivers during the period 1966–2020. New hydrological insights for the region: Our analysis reveals a marked increase in the severity and frequency of CDHWs across Poland. Specifically, 58 stations exhibit significant upward trends in CDHWs frequency (0.38 times per decade, p < 0.05). Notably, more than half of all stations demonstrate substantial changes in CDHWs characteristics: duration (4.27 days per decade, p < 0.05), maximum CDHWs-related heatwave intensity (0.50 °C per decade, p < 0.05), and maximum CDHWs-related drought intensity (-0.10 in Standardized Streamflow Index (SSI) per decade, p < 0.05). Moreover, CDHWs become severe with more high-level categories. Distinct regional patterns reveal that CDHWs are more frequent and severe in western Poland, while extreme CDHWs are prevalent in eastern Poland. These insights underline the necessity for integrating riverine CDHWs dynamics into global water management and climate adaptation frameworks. As the pioneering study on riverine CDHWs, this work provides a foundational reference for future investigations. |
| format | Article |
| id | doaj-art-e6cccb9305ad4b319837e78589461055 |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-10-01 |
| publisher | Elsevier |
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| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-e6cccb9305ad4b319837e785894610552025-08-20T03:51:09ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-10-016110262110.1016/j.ejrh.2025.102621Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in PolandJiang Sun0Renata Graf1Dariusz Wrzesiński2Fabio Di Nunno3Yi Luo4Senlin Zhu5Roohollah Noori6Francesco Granata7College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, ChinaDepartment of Hydrology and Water Management, Adam Mickiewicz University, B. Krygowskiego 10, Poznań 61-680, PolandDepartment of Hydrology and Water Management, Adam Mickiewicz University, B. Krygowskiego 10, Poznań 61-680, PolandDepartment of Civil and Mechanical Engineering (DICEM), University of Cassino and Southern Lazio, Via Di Biasio, 43, Frosinone, Cassino 03043, ItalyGIS Technology Research Center of Resource and Environment in Western China, Yunnan Normal University, Kunming, China; Corresponding authors.College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China; Corresponding authors.Graduate Faculty of Environment, University of Tehran, Tehran, Iran; United Nations University Institute for Water, Environment and Health (UNU-INWEH), Richmond Hill, Ontario, CanadaDepartment of Civil and Mechanical Engineering (DICEM), University of Cassino and Southern Lazio, Via Di Biasio, 43, Frosinone, Cassino 03043, ItalyStudy region: 64 Polish rivers in Central Europe. Study focus: Despite their profound ecological and societal impacts, the dynamics of compound droughts and heatwaves (CDHWs) in river systems remain a largely uncharted territory. This study provides the first comprehensive assessment of riverine CDHWs, utilizing long-term river discharge and water temperature datasets from 64 Polish rivers during the period 1966–2020. New hydrological insights for the region: Our analysis reveals a marked increase in the severity and frequency of CDHWs across Poland. Specifically, 58 stations exhibit significant upward trends in CDHWs frequency (0.38 times per decade, p < 0.05). Notably, more than half of all stations demonstrate substantial changes in CDHWs characteristics: duration (4.27 days per decade, p < 0.05), maximum CDHWs-related heatwave intensity (0.50 °C per decade, p < 0.05), and maximum CDHWs-related drought intensity (-0.10 in Standardized Streamflow Index (SSI) per decade, p < 0.05). Moreover, CDHWs become severe with more high-level categories. Distinct regional patterns reveal that CDHWs are more frequent and severe in western Poland, while extreme CDHWs are prevalent in eastern Poland. These insights underline the necessity for integrating riverine CDHWs dynamics into global water management and climate adaptation frameworks. As the pioneering study on riverine CDHWs, this work provides a foundational reference for future investigations.http://www.sciencedirect.com/science/article/pii/S221458182500446XHydrological droughtSpatiotemporal patternRiverine compound droughts and heatwavesFrequency and severity |
| spellingShingle | Jiang Sun Renata Graf Dariusz Wrzesiński Fabio Di Nunno Yi Luo Senlin Zhu Roohollah Noori Francesco Granata Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in Poland Journal of Hydrology: Regional Studies Hydrological drought Spatiotemporal pattern Riverine compound droughts and heatwaves Frequency and severity |
| title | Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in Poland |
| title_full | Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in Poland |
| title_fullStr | Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in Poland |
| title_full_unstemmed | Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in Poland |
| title_short | Unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in Poland |
| title_sort | unveiling spatiotemporal patterns of compound hydrological droughts and river heatwaves in poland |
| topic | Hydrological drought Spatiotemporal pattern Riverine compound droughts and heatwaves Frequency and severity |
| url | http://www.sciencedirect.com/science/article/pii/S221458182500446X |
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