Links between Teleconnection Patterns and Water Level Regime of Selected Polish Lakes

Plewa, Katarzyna; Perz, Adam; Wrzesiński, Dariusz

doi:10.3390/w11071330

Cited by 15 publications

(8 citation statements)

References 80 publications

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“…The number of classes was determined based on the analysis of geometry of the dendrogram and the plot of the linkage distance curve. The aforementioned methods are commonly used in hydro-meteorological studies [41][42][43][44][45]. In the statistical analysis of the results obtained the Statistica (StatSoft) software was applied.…”

Section: Methodsmentioning

confidence: 99%

Detecting Patterns of Changes in River Water Temperature in Poland

Graf

Wrzesiński

2020

Water

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The study determined water temperature trends of rivers in Poland in the period 1971–2015, and also their spatial and temporal patterns. The analysis covered daily water temperature of 53 rivers recorded at 94 water gauge stations and air temperature at 43 meteorological stations. Average monthly, annual, seasonal and maximum annual tendencies of temperature change were calculated using the Mann–Kendall (M–K) test. Regional patterns of water temperature change were determined on the basis of Ward’s hierarchical grouping for 16 correlation coefficients of average annual water temperature in successive 30-year sub-periods of the multi-annual period of 1971–2015. Moreover, regularities in monthly temperature trends in the annual cycle were identified using 12 monthly values obtained from the M–K Z test. The majority of average annual air and water temperature series demonstrate statistically significant positive trends. In three seasons: spring, summer and autumn, upward tendencies of temperature were detected at 70%–90% of the investigated water gauges. In 82% of the analysed rivers, similarity to the tendencies of change of monthly air temperature was concluded, with the climatic factor being recognised as of decisive importance for the changes in water thermal characteristics of the majority of rivers in Poland. In the winter months, positive trends of temperature were considerably weaker and in general statistically insignificant. On a regional scale, rivers with a quasi-natural thermal regime experienced temperature increases from April to November. In the other cases, different directions of change in river water temperature (RWT) were attributed to various forms of human impact. It was also found that for the majority of rivers the average annual water temperature in the analysed 30-year sub-periods displayed upward trends, statistically significant or close to the significance threshold. Stronger trends were observed in the periods after 1980, while a different nature of water temperature change was detected only in a couple of mountainous rivers or rivers transformed by human impact. In the beginning of the analysed period (1971–2015), the average annual water temperature of these rivers displayed positive and statistically significant trends, while after 1980 the trends were negative. The detected regularities and spatial patterns of water temperature change in rivers with a quasi-natural regime revealed a strong influence of climate on the modification of their thermal regime features. Rivers characterised by a clearly different nature of temperature change, both in terms of the direction of the tendencies observed and their statistical significance, were distinguished by alterations of water thermal characteristics caused by human activity. The results obtained may be useful in optimising the management of aquatic ecosystems, for which water temperature is a significant indicator of the ongoing environmental changes.

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Section: Methodsmentioning

confidence: 99%

Detecting Patterns of Changes in River Water Temperature in Poland

Graf

Wrzesiński

2020

Water

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“…There are many TPs, so it makes sense to choose those that affect the climate of the Northern Hemisphere and especially the Baltic region. The North Atlantic Oscillation (NAO), Arctic Oscillation (AO), East Atlantic (EA), Scandinavia Pattern (SCAND), and Polar/Eurasia (POL-EUR) indices are commonly used to analyze European climate [39][40][41]. All these TPs are characterized by positive and negative phases followed by a certain atmospheric circulation.…”

Section: Methodsmentioning

confidence: 99%

Warming Climate-Induced Changes in Lithuanian River Ice Phenology

Šarauskienė,

Jakimavičius,

Jurgelėnaitė

et al. 2024

Sustainability

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Due to rising surface air temperatures, river ice is shrinking dramatically in the Northern Hemisphere. Ice cover during the cold season causes fundamental changes in river ecosystems and has important implications for nearby communities and industries. Changes caused by climate warming, therefore, affect the sustainability of key resources, livelihoods, and traditional practices. Thus far, too little attention has been paid to research into the phenomenon of river ice in the Baltic States. Since the observational data of the last sixty years are currently available, we took advantage of the unique opportunity to assess ice regime changes in the gauged rivers by comparing two climatological standard normals. By applying statistical methods (Mann–Kendall, Pettitt, SNHT, Buishand, von Neumann, and Wilcoxon rank sum tests), this study determined drastic changes in ice phenology parameters (freeze-up date, ice break-up date, and ice cover duration) of Lithuanian rivers in the last thirty-year period. The dependence of the selected parameters on local climatic factors and large-scale atmospheric circulation patterns was identified. It was established that the sum of negative air temperatures, as well as the North Atlantic Oscillation, East Atlantic, and Arctic Oscillation indices, have the greatest influence on the ice regime of Lithuanian rivers.

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“…The study by Plewa et al [2] was based on the mean monthly water levels of 15 lakes in northern Poland from 1976 to 2015 and identified relationships between lake water levels and indices of macroscale atmospheric circulations: the Arctic Oscillation (AO), the North Atlantic Oscillation (NAO), the East Atlantic (EA) and the Scandinavian pattern (SCAND). The correlation analysis revealed the most important relationships in the case of AO and NAO, especially in winter, and slightly weaker for EA and SCAND.…”

Section: Summary Of the Special Issuementioning

confidence: 99%

Effects of Oceanic–Atmospheric Oscillations on Rivers

Wrzesiński

Sobkowiak

2022

Water

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In this Special Issue, we invited scientists devoted to research on the impacts of the ocean and atmosphere oscillations on the climate and weather patterns, resulting in disturbances in the hydrological phenomena. In our view, the main goal has been successfully reached. This Special Issue received investigations based on measurements, modelling and experiments, related to a wide array of changes in river and lake hydrology on different scales, from local and regional to global approaches. We strongly believe that the readers of journal Water can benefit from these new findings and learn more about effects of the ocean and atmosphere on hydrology using the published papers and share the presented results with the scientific community, policymakers and stakeholders [...]

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Links between Teleconnection Patterns and Water Level Regime of Selected Polish Lakes

Cited by 15 publications

References 80 publications

Detecting Patterns of Changes in River Water Temperature in Poland

Detecting Patterns of Changes in River Water Temperature in Poland

Warming Climate-Induced Changes in Lithuanian River Ice Phenology

Effects of Oceanic–Atmospheric Oscillations on Rivers

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