[{"name":"tarfala-kirchner-2023-ice-on-2022-1","title":"Time lapse imagery of the ice-on event at Lake Tarfala, Kebnekaise Mountains, northern Sweden, autumn 2022","summary":"This dataset contains images of Lake Tarfala taken every 2 hours (irrespective of day- or nighttime) during the period from 16 September, 2022 to 31 October, 2022. During this period, the surface of Lake Tarfala transitions from being ice-free to ice-covered, an event referred to as \"ice-on\".\r\n\r\nThe dataset can be used to observe the ice-on event and to assign a date to it. Knowledge of lake ice phenology, i.e. seasonal formation and loss of the lacustrine ice cover, is of importance since the timing of ice-on 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 Lake Tarfala\u2019s north-eastern shore, at 1220 m above sea level. In total, there are 542 images. The later the season, the more pictures are dark because of the approaching of the polar night.\r\n\r\n","citations":"Kirchner, N., Weckstr\u00f6m, J., Jansen, J., Schenk, F., Barnett, J., Granebeck, A., Lepp\u00e4ranta, M., Korhola, A.  Water temperature, mixing and ice phenology in the arctic-alpine lake Darf\u00e1lj\u00e1vri (Lake Tarfala), northern Sweden. In review at (2023): Arctic, Antarctic and Alpine Research","comments":"","category":"Lacustrine","subcategory":"Lake Ice ","keywords":"Lacustrine; Observations; Lake Tarfala; Tarfala; Lake ice; Lake ice phenology; Ice-on","scientist":"Nina Kirchner, Annika Granebeck, Jamie Barnett, Maja Oscarsson","firstname":"Nina","lastname":"Kirchner","address":"Department of Physical Geography; Stockholm University","postalcode":"SE-106 91","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science > Cryosphere > Snow\/ice > Lake ice","location":"Continent > Europe > Northern Europe > Scandinavia > Sweden","progress":"Completed","language":"English","project":"The data were collected as part of a project within the Arctic Avenue Spearhead Research project between Stockholm University and the University of Helsinki, Finland, running between 2019 and 2022. It has contributed to this work through activity Lake thermal and mixing dynamics under changing climate.","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]