Effect of climate warming on a change in thermal and ice conditions in the largest lake in Poland - Lake Śniardwy

Title:

Effect of climate warming on a change in thermal and ice conditions in the largest lake in Poland - Lake Śniardwy

Creator:

Ptak, Mariusz, Sojka, Mariusz, and Nowak, Bogumił

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:5e369ff9-78c2-4430-a171-4555fb4e9273
uuid:5e369ff9-78c2-4430-a171-4555fb4e9273
doi:10.2478/johh-2020-0024

Subject:

lakes, water temperature, air temperature, ice cover, climate change, and Central Europe

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

Lake Śniardwy is the largest among more than 7000 Polish lakes. So far, it has not been a subject of detailed investigations concerning long-term changes in water temperature or ice regime. A considerable change in thermal and ice conditions has been observed in the period 1972–2019. Mean annual water temperature increased by 0.44°C dec–1 on average, and was higher than an increase in air temperature (0.33°C dec–1). In the monthly cycle, the most dynamic changes occurred in April (0.77°C dec–1). In the case of ice cover, it appeared increasingly later (5.3 days dec–1), and disappeared earlier (3.0 days dec–1). The thickness of ice cover also decreased (2.4 cm dec–1). Statistical analysis by means of a Pettitt test showed that the critical moment for the transformations of the thermal and ice regime was the end of the 1980’s. In addition to the obvious relations with air temperature for both characteristics, it was evidenced that the occurrence of ice cover depended on wind speed and snow cover. The recorded changes in the case of Lake Śniardwy are considered unfavourable, and their consequences will affect the course of physical, chemical, and biological processes in the largest lake in Poland.

Language:

Slovak

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

260-270

Source:

Journal of hydrology and hydromechanics | 2020 Volume:68 | Number:3

Harvested from:

CDK

Metadata only:

false