[{"name":"tarfala-kirchner-2021-ice-off-1","title":"Time lapse imagery of the ice-off event at Lake Tarfala, Kebnekaise Mountains, northern Sweden, summer 2020","summary":"This dataset contains images of Lake Tarfala taken every 2 hours during the period from June 20, 2020, to September 14, 2020. During this period, the surface of Lake Tarfala changes from 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 (or, rather, a time interval) to it. Knowledge of this is important because the timing of ice-off impacts lake processes, such as 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 955 images.","citations":"Kirchner N, et al. (2021) Timing of ice-off and ice-on at Lake Tarfala, constrained by multiple datasets. (in preparation)","comments":"Please cite this dataset and the article by Kirchner et al. when using images from this dataset.\r\n\r\nThe support of our co-workers on the Arctic Avenue activity *Lake thermal and mixing dynamics under changing climate* (J. Weckstr\u00f6m, K. Weckstr\u00f6m, A. Korhola, and F. Schenk), and of our field assistants (M. Holmstr\u00f6m, E. Kirchner) is gratefully acknowledged.","category":"Lacustrine","subcategory":"Observations","keywords":"Lake Tarfala; Tarfala; Lake ice; Ice-off","scientist":"Nina Kirchner, Annika Granebeck, Marnie Hancke","firstname":"Nina ","lastname":"Kirchner","address":"Department of Physical Geography and Bolin Centre for Climate Research; 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":"Free"}]