LONG-TERM TRENDS IN LAKE ICE COVER IN FINLAND - River Ice

Proceedings oh the 18th IAHR InternationalSymposium on Ice (2006)REFERENCESEklund, A. (1999), “Islägging och is lossning på sjöar”, Sveriges meteorologiska och hydrologiskainstitut, Nörrköping, SMHI Hydrologi Nr 81.Filatov, N., Salo, Y. and Nazarova, L. (2005), “Effect of climate variability on natural waterbodies in Northwest Russia”, Proceedings of the 15th Northern Research Basins InternationalSymposium and Workshop, Luleå to Kvikkjokk, Sweden, pp. 31­40.Hyvärinen, V. (2003), “Trends and Characteristics of Hydrological Time Series in Finland”,Nordic Hydrology 34 (1/2), 71­90.Hällström, G.G. (1841a), “Specimina mutanti currente seculo temporis, quo glacies fluminunannuae dissolutae sunt”, Acta Soc. Sci. Fenn. 1, 129–149.Hällström, G.G. (1841b), “De tempore regelationis et congelationis aquarum fluminis Kyro”, ActaSoc. Sci. Fenn. 1, 387–394.Johansson, O. V. (1932), “Isförhållandena vid Uleåborg och Torne älv”, Bidrag till kännedom afFinlands natur och folk, Utgifna af Finska Vetenskap­Societen H. 84 Nro 3, Helsingfors.Kajander, J. (1989), “150 years since G.G. Hällström’s studies on ice break­up dates as climaticindicators”, Publ. Acad. Finland 9, 329–338.Kajander, J. (1995), “Cryophenological records from Tornio”, Mimeograph Series of the nationalBoard of Waters and the Environment 552, Helsinki.Klingbjer, P. and Moberg, A. (2003), “A composite monthly temperature record from Tornedalenin Northern Sweden, 1802­2002”, International Journal of Climatology 23(12), 1465­1494.Korhonen,. J. (2005), “Suomen vesistöjen jääolot”, Finnish Environment 751, FinnishEnvironment Institute, Helsinki.Kuusisto, E. (1987), “An analysis of the longest ice observation series made on Finnish lakes”,Aqua Fennica 17 (2), 123­132.Kuusisto, E. (1993), “Lake ice observations in Finland in the 19th and 20th century: any messagefor the 21st?”, Snow watch '92: detection strategies for snow and ice, World Data Center A forGlaciology, Boulder. Report GD­25, pp. 57­65Kuusisto, E. (1994), “The thickness and volume of lake ice in Finland in 1961­90”, Publications ofthe Water and Environment Research Institute 17, Helsinki, pp. 27­36.Kuusisto, E. and Elo, A­R. (2000), “Lake and river ice variables as climate indicators in NorthernEurope”, Verh. Internat. Verein. Limnol. 27(5), 2761­2764.Livingstone, D. M. (1997), “Break­up dates of alpine lakes as proxy data for local and regionalmean surface air temperatures”, Climatic Change 37(2), 407­439.Magnuson, J. J., Robertson, D. M., Benson, B. J., Wynne, R. H., Livingstone, D. M., Arai, T.,Assel, R. A., Barry, R. G., Card, V., Kuusisto, E., Granin, N., Prowse, T. D., Stewart, K. M.and Vuglinski, V. S. (2000), “Historical trends in lake and river ice cover in the NorthernHemisphere”, Science 289(5485), 1743­1746.Palecki, M. A. and Barry, R. G. (1986), “Freeze­up and break­up of lakes as an index oftemperature changes during the transition seasons: a case study in Finland”, Journal of Climateand Applied Meteorology 25(7), 893­902.Tuomenvirta, H. (2004), “Reliable estimation of climatic variations in Finland”, FinnishMeteorological Institute Contributions 43, Finnish Meteorological Institute, Helsinki.Yoo, J. and D'Odorico, P. (2002), “Trends and fluctuations in the dates of ice break­up of lakes inNorthern Europe: the effect of the North Atlantic Oscillation”, Journal of Hydrology 268(1),100­112.-78-