Different responses to climate change of the hydrological regime of Lake Hańcza, the deepest lake in the Central European Plain

Ptak, Mariusz; Sojka, Mariusz

doi:10.1080/02626667.2021.1906429

Cited by 3 publications

(2 citation statements)

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“…This study adopts the Mann-Kendall test (MK) following the method used in [29][30][31] to determine the trends of changes in minimum and maximum water temperatures. This method has been widely used in analyses involving hydrological and climatic change trends [26,30,[32][33][34]. Although the MK test lacks autocorrelation, this was removed from the data set by adopting the trend-free pre-whitening procedure developed elsewhere [29,35].…”

Section: Discussionmentioning

confidence: 99%

“…Among the studied lakes, five lakes (Charzykowskie, Bachotek, Selmęt Wielki, Ha ńcza, and Studzieniczne) exhibited a prolonged period of warming; Lake Sławskie demonstrated a notable warming trend, while Lakes Jeziorak and Selmęt Wielki exhibited ongoing warming. These temperature changes significantly affect lakes with stratified, deep, and shallow characteristics [34]. The observed temperature increases in deep lakes such as Charzykowskie and Ha ńcza can have complex implications due to their greater water column depth, as these lakes allow for vertical mixing and temperature gradients.…”

Section: Discussionmentioning

confidence: 99%

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How Do Extreme Lake Water Temperatures in Poland Respond to Climate Change?

Olowoyeye,

Ptak,

Sojka

2023

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Lakes are vital components of the Earth’s hydrological cycle and are susceptible to the impacts of climate change. Understanding the changes in terms of minimum and maximum lake surface temperatures is crucial for assessing the effects of climate change on freshwater ecosystems. This study focuses on ten lakes in Poland to investigate the impacts of climate change on lake temperatures in different geographical regions. The Mann–Kendall (MK) and Sen tests were employed to analyze trends and changes in minimum and maximum water temperatures, respectively. The results reveal significant increases in the minimum and maximum temperatures, particularly in May and June. Different lakes exhibit varying trends and variability in temperature changes over time, indicating the vulnerability of these ecosystems. The current study also examines the magnitude of annual temperature changes and classifies them into different levels. This analysis highlights the complex relationship between air temperature, seasonal cycles, and lake morphometric characteristics in shaping variations in lake surface water temperature. These findings contribute to understanding the impacts of climate change on Poland’s lakes and provide valuable insights for developing conservation strategies and adaptive measures to protect freshwater resources.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

How Do Extreme Lake Water Temperatures in Poland Respond to Climate Change?

Olowoyeye,

Ptak,

Sojka

2023

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Trends of Changes in Minimum Lake Water Temperature in Poland

2022

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Water temperature in lakes is their basic property that determines many processes. Changes in average values are thoroughly investigated using a long-term approach. Knowledge of extreme situations such as temperature minimums is still insufficient. This paper analyses changes in the minimum temperature in 10 lakes in Poland in the period 1972–2021. The obtained results show variability over the course of the parameter, both at the annual and monthly scale. In the first case, half of the analysed set showed statistically significant increasing trends (on average 0.10 °C per decade). In the latter case, the greatest changes occurred in the months of the warm half-year (on average 0.57 °C per decade). The reported situation is caused by the individual conditions of particular lakes, i.e., their location, morphometric parameters, or the dynamics of the occurrence of ice phenomena. A successive increase in the minimum temperature in lakes has its consequences for biotic and abiotic processes. Exceeding specific thresholds results in the evident transformation of these ecosystems.

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Utilizing Multi-Source Datasets for the Reconstruction and Prediction of Water Temperature in Lake Miedwie (Poland)

Ptak,

Zhu,

Amnuaylojaroen

et al. 2024

Remote Sensing

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Water temperature is a fundamental parameter of aquatic ecosystems. It directly influences most processes occurring within them. Hence, knowledge of this parameter’s behavior, based on long-term (reliable) observations, is crucial. Gaps in these observations can be filled using contemporary methodological solutions. Difficulties in reconstructing water temperature arise from the selection of an appropriate methodology, and overcoming them involves the proper selection of input data and choosing the optimal modeling approach. This study employed the air2water model and Landsat satellite imagery to reconstruct the water temperature of Lake Miedwie (the fifth largest in Poland), for which field observations conducted by the Institute of Meteorology and Water Management—National Research Institute ended in the late 1980s. The approach based on satellite images in this case yielded less accurate results than model analyses. However, it is important to emphasize the advantage of satellite images over point measurements in the spatial interpretation of lake thermal conditions. In the studied case, due to the lake’s shape, the surface water layer showed no significant thermal contrasts. Based on the model data, long-term changes in water temperature were determined, which historically (1972–2023) amounted to 0.20 °C per decade. According to the adopted climate change scenarios by the end of the 21st century (SSP245 and SSP585), the average annual water temperature will be higher by 1.8 °C and 3.2 °C, respectively. It should be emphasized that the current and simulated changes are unfavorable, especially considering the impact of temperature on water quality. From an economic perspective, Lake Miedwie serves as a reservoir of drinking water, and changes in the thermal regime should be considered in the management of this ecosystem.

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Different responses to climate change of the hydrological regime of Lake Hańcza, the deepest lake in the Central European Plain

Cited by 3 publications

References 51 publications

How Do Extreme Lake Water Temperatures in Poland Respond to Climate Change?

How Do Extreme Lake Water Temperatures in Poland Respond to Climate Change?

Trends of Changes in Minimum Lake Water Temperature in Poland

Utilizing Multi-Source Datasets for the Reconstruction and Prediction of Water Temperature in Lake Miedwie (Poland)

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