http://bolin.su.se/data/tarfala-kirchner-2021-ice-off-1 Nina Kirchner, Annika Granebeck, Marnie Hancke Bolin Centre Database 2021 Datafile Lacustrine Observations Lake Tarfala Tarfala Lake ice Ice-off Earth science > Cryosphere > Snow/ice > Lake ice Nina Kirchner 2021-03-11T14:28:19+00:00 English 1 The dataset consists of image files (JPG) of Lake Tarfala, with the date and time (Swedish summer time, UTC+2) included in each photo. The pictures were acquired using a camera positioned on the mountain flank along Lake Tarfala’s north-eastern shore, at ~67.9° N, 18.6° E, at 1220 m above sea level. The data were collected using a SiFar Willfine Trail Camera 4.0CG. The camera elevation is 1.8 m above ground. Each JPG file has a size of ~2.5 MB. The total size of the dataset is ~2.2 GB. During a few short periods, fog and/or rain obscures the view of the lake. From August 9 onwards, one or more pictures per day are dark because the period of midnight sun came to an end. Please cite this dataset and the article by Kirchner et al. when using images from this dataset. The support of our co-workers on the Arctic Avenue activity *Lake thermal and mixing dynamics under changing climate* (J. Weckström, K. Weckström, A. Korhola, and F. Schenk), and of our field assistants (M. Holmström, E. Kirchner) is gratefully acknowledged.