Articles | Volume 15, issue 5
https://doi.org/10.5194/tc-15-2333-2021
https://doi.org/10.5194/tc-15-2333-2021
Research article
 | 
20 May 2021
Research article |  | 20 May 2021

Geographic variation and temporal trends in ice phenology in Norwegian lakes during the period 1890–2020

Jan Henning L'Abée-Lund, Leif Asbjørn Vøllestad, John Edward Brittain, Ånund Sigurd Kvambekk, and Tord Solvang

Cited articles

Benson, B. J., Magnusson, J. J., Jensen, O. P., Card, V. M., Hodgkins, G., Korhonen, J., Livingstone, D. M., Stewart, K. M., Weyhenmeyer, G. A., and Granin, N. G.: Extreme events, trends, and variability in Northern Hemisphere lake-ice phenology (1855–2005), Climate Change, 112, 299–323, https://doi.org/10.007/s10584-011-0212-8, 2012. 
Blenckner, T., Järvinen, M., and Weyhenmeyer, G. A.: Atmospheric circulation and its impact on ice phenology in Scandinavia, Boreal Env. Res., 9, 371–380, 2004. 
Borgstrøm, R.: Relationship between spring snow depth and growth of brown trout, Salmo trutta, in an Alpine lake: Predicting consequences of climate change, Arct. Antarct. Alp. Res., 33, 476–480, https://doi.org/10.1080/15230430.2001.12003457, 2001. 
Borgstrøm, R. and Museth, J.: Accumulated snow and summer temperature – critical factors for recruitment to high mountain populations of brown trout (Salmo trutta L.), Ecol. Freshw. Fish, 14, 375–384, https://doi.org/10.1111/j.1600-0633.2005.00112.x, 2005. 
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Short summary
Observations from 1890 to 2020 of ice phenology for 101 Norwegian lakes were used to detect variation in ice phenology. The average date of ice break-up occurred later in spring with increasing elevation, latitude and longitude. The average date of freeze-up and the length of the ice-free period decreased with elevation and longitude. Lakes were completely frozen later recently in autumn. There is a significant trend for earlier break-up, later freeze-up and completely frozen lakes after 1991.