Hydrological regime in a model High Arctic catchment (Bratteggdalen, Svalbard) under warming and precipitation rise ...

• Main Authors: Stachnik, Lukasz, Migała, Krzysztof, Wąsik, Mirosław, Marszałek, Henryk, Wołoszyn, Aleksandra, Kasprzak, Marek, Łepkowska, Elżbieta, Pilguj, Natalia, Ignatiuk, Dariusz, Zielonka, Anna, Bartosiewicz, Maciej
• Format: Dataset
• Language: English
• Published: Zenodo 2024
• Subjects: Arctic; streamflow; lake; hydrometeorology; climate change; permafrost; glacier; Bratteggdalen; Svalbard; Climate change
• Online Access: https://dx.doi.org/10.5281/zenodo.10935539; https://zenodo.org/doi/10.5281/zenodo.10935539

Climate change is impacting water flow worldwide and is particularly important for High Arctic basins. Thawing permafrost and melting of glaciers, as well as higher air temperatures and precipitation, affect hydrological regimes and retention in polar basins. However, knowledge is limited as regards long-term changes in discharge from catchments in the High Arctic. Our aim was to evaluate the impact of local conditions on hydrological regime in glacial-fluvio-lacustrine model system in the High Arctic. We used mainly hydrological and meteorological data from 9 summer seasons (June-September) between 2005 and 2019 extracted from the entire database (16 seasons in 1972-2019). Wide range of statistical methods was applied including bootstrapping, random forest and multiple regression, to determine the coupling between hydrometeorological parameters (air and water temperature, discharge, sunshine duration, precipitation). The hydrological regime exhibits a distinct seasonal pattern with a pronounced, ...