[{"@context":"http:\/\/schema.org\/","@type":"Dataset","identifier":"https:\/\/doi.org\/10.17043\/tarfala-kirchner-2025-ice-off-2024-1","@id":"https:\/\/doi.org\/10.17043\/tarfala-kirchner-2025-ice-off-2024-1","name":"Time lapse imagery of the ice-off event at Darf\u00e1lj\u00e1vri (Lake Tarfala), Kebnekaise mountains, northern Sweden, summer 2024","description":"This dataset contains images of Darf\u00e1lj\u00e1vri taken every 2 hours (irrespective of day- or nighttime) during the period from 11 May, 2024 to 1 July, 2024. During this period, the surface of Darf\u00e1lj\u00e1vri transitions from being ice-covered to ice-free, an event referred to as \"ice-off\".\r\n\r\nThe dataset can be used to observe the ice-off event and to assign a date to it. Across datasets (e.g. using the ice-on dataset of the previous year), ice cover duration can be derived. Knowledge of lake ice phenology, i.e. seasonal formation and loss of the lacustrine ice cover, is of importance since the timing of ice-off impacts lake processes such as stratification and vertical mixing.\r\n\r\nThe pictures were acquired using a camera positioned on the mountain flank along Darf\u00e1lj\u00e1vri\u2019s north-eastern shore, at 1220 m above sea level. In total, there are 618 images.","url":"http:\/\/bolin.su.se\/data\/tarfala-kirchner-2025-ice-off-2024-1","keywords":["Lacustrine","Lake Ice","Darf\u00e1lj\u00e1vri","Lake Tarfala","Tarfala","Lake ice","Lake ice phenology","Ice-off","Earth science"],"creator":{"@type":"Person","name":"Nina Kirchner, Johanna Dahlkvist, Jamie Barnett, Daniella Lillieroth Charalambous, Carl Hernqvist Larsson"},"citation":"Kirchner N, Weckstr\u00f6m J, Jansen J, Schenk F, Barnett J, Granebeck A, Lepp\u00e4ranta M, Korhola A (2024) Water temperature, mixing, and ice phenology in the arctic\u2013alpine Lake Darf\u00e1lj\u00e1vri (Lake Tarfala), northern Sweden. Arctic, Antarctic, and Alpine Research 56. https:\/\/doi.org\/10.1080\/15230430.2023.2287704","license":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","isAccessibleForFree":true,"includedInDataCatalog":{"@type":"DataCatalog","name":"Bolin Centre for Climate Research, Stockholm University","identifier":"https:\/\/bolin.su.se\/data\/","url":"https:\/\/bolin.su.se\/data\/"},"distribution":{"@type":"DataDownload","encodingFormat":"application\/zip","contentUrl":"https:\/\/bolin.su.se\/data\/uploads\/tarfala-kirchner-2025-ice-off-2024-1.zip"},"size":1336191028,"isBasedOn":"Kirchner N, Weckstr\u00f6m J, Jansen J, Schenk F, Barnett J, Granebeck A, Lepp\u00e4ranta M, Korhola A (2024) Water temperature, mixing, and ice phenology in the arctic\u2013alpine Lake Darf\u00e1lj\u00e1vri (Lake Tarfala), northern Sweden. Arctic, Antarctic, and Alpine Research 56. https:\/\/doi.org\/10.1080\/15230430.2023.2287704","temporalCoverage":"2024-05-11\/2024-05-11"}]