Long-term temperature fluctuations in rivers of the Fore-Sudetic region in Poland

Ptak, Mariusz

doi:10.37040/geografie2018123030279

Cited by 8 publications

(4 citation statements)

References 45 publications

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“…It should be emphasized that river water temperature is correlated with air temperature [42,43]. The statement was confirmed in three out of four cases analyzed in the paper, where the rate of increase in water temperature and the corresponding air temperatures in the nearest meteorological stations were similar.…”

Section: Discussionsupporting

confidence: 65%

Effect of Air Temperature Increase on Changes in Thermal Regime of the Oder and Neman Rivers Flowing into the Baltic Sea

et al. 2021

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The paper presents long-term changes in water temperature in two rivers, Oder and Neman, with catchments showing different climatic conditions (with dominance of marine climate in the case of the Oder and continental climate in the case of the Neman River). A statistically significant increase in mean annual water temperature was recorded for four observation stations, ranging from 0.17 to 0.39 °C dec−1. At the seasonal scale, for the winter half-year, water temperature increase varied from 0.17 to 0.26 °C dec−1, and for the summer half-year from 0.17 to 0.50 °C dec−1. In three cases (Odra-Brzeg, Odra-Słubice, Niemen-Grodno), the recorded changes referred to the scale of changes in air temperature. For the fourth station on Neman (Smalininkai), an increase in water temperature in the river was considerably slower than air temperature increase. It should be associated with the substantial role of local conditions (non-climatic) affecting the thermal regime in that profile. Short-term forecast of changes in water temperature showed its further successive increase, a situation unfavorable for the functioning of these ecosystems.

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Section: Discussionsupporting

confidence: 65%

Effect of Air Temperature Increase on Changes in Thermal Regime of the Oder and Neman Rivers Flowing into the Baltic Sea

et al. 2021

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“…According to the forecasts, the greatest increases in river water temperature will occur among others in Europe, where earlier research revealed its increase in a range of 1-3 °C (Arora et al, 2016;Basarin et al, 2016;Pekarova et al, 2008). The tendency for an increase in water temperature was also confirmed in the case of rivers in Poland, where the issues of thermal conditions of rivers represent an important trend of hydrological research (Graf, 2019;Graf and Wrzesiński, 2020;Łaszewski, 2020;Ptak, 2018).…”

Section: Introductionmentioning

confidence: 89%

“…DLink.max . 100% at a level of 66%, and for the purpose of designation of subgroups, a threshold value at a level of 25% was adopted (Ptak et al, 2018). The cluster analysis was conducted based on results obtained from the Sen analysis, presented the magnitude of changes in mean monthly water and air temperatures in particular stations.…”

Section: Methodsmentioning

confidence: 99%

Warming Vistula River – the effects of climate and local conditions on water temperature in one of the largest rivers in Europe

Ptak

Sojka

Graf

et al. 2022

Journal of Hydrology and Hydromechanics

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The paper evaluates changes in the water temperature of the Vistula River – one of the longest rivers in Europe. Mean monthly and annual water temperatures from the period 1971–2017 for 11 stations along the entire length of the river revealed the increasing trends. The mean increase in water temperature in the analysed multi-annual period was 0.31 °C dec–1. In the majority of analysed stations, the key factor determining changes in the water temperature of the river was air temperature. The observed water warming in the Vistula River should be considered an exceptionally unfavourable situation in the context of importance of water temperature for a number of processes and phenomena occurring in river ecosystems. Given the scale of changes, fast measures should be undertaken to slow down the warming.

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“…Such a situation will certainly force undertaking corrective measures reducing the effects of global warming for the functioning of lake ecosystems. Such measures are only performed in the case of rivers (Ptak 2018. Each expansion of knowledge in the scope of the thermal regime of lakes and its changes may contribute to the determination of the directions and scope of measures allowing for limiting the effect of climate change in the context of the functioning of lakes.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of daily water temperature fluctuations in lake kierskie (West Poland)

Ptak

Sojka

Nowak

2019

Quaestiones Geographicae

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The paper presents the dynamics of daily water temperature fluctuations in Lake Kierskie (West Poland) and determines the effect of air temperatures and wind speed on the variability of the parameter (water temperature). The analysis was based on hourly water temperature values from the period from May 2012 to January 2018. The data analysis permitted the description of the thermal regime of waters in the lake in the hourly cycle in reference to each month, and designation of months characterised by the highest and lowest stability of water temperatures. More than half of the analysed days was characterised by a change in water temperature not exceeding 1°C. The course of water temperature showed strongly positive correlations with air temperature, and weak correlations with wind speed. Water temperatures in the lake were correlated the strongest with air temperatures with a 24 h time step.

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Long-term temperature fluctuations in rivers of the Fore-Sudetic region in Poland

Cited by 8 publications

References 45 publications

Effect of Air Temperature Increase on Changes in Thermal Regime of the Oder and Neman Rivers Flowing into the Baltic Sea

Effect of Air Temperature Increase on Changes in Thermal Regime of the Oder and Neman Rivers Flowing into the Baltic Sea

Warming Vistula River – the effects of climate and local conditions on water temperature in one of the largest rivers in Europe

Characteristics of daily water temperature fluctuations in lake kierskie (West Poland)

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