Quantifying temporal changes in Tornionjoki river ice breakup dates and spring temperatures in Lapland since 1802

Cryophenological records （i.e. observational series of freeze and breakup dates of ice） are of great importance when assessing the environmental variations in cold regions. Here we employed the extraordinarily long observational records of river ice breakup dates and air temperatures in northern Fen...

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Veröffentlicht in:	Journal of geographical sciences 2013-12, Vol.23 (6), p.1069-1079
Hauptverfasser:	Helama, Samuli, Jiang, Jianmin, Korhonen, Johanna, Holopainen, Jari, Timonen, Mauri
Format:	Artikel
Sprache:	eng
Schlagworte:	20th century Air temperature Anthropogenic factors Bgi / Prodig Cold regions Earth and Environmental Science Environmental assessment Environmental history Geographical Information Systems/Cartography Geography Hydrometeorology Ice ages Ice breakup Nature Conservation Physical Geography Potamology. Stream hydrodynamics Remote Sensing/Photogrammetry River ice Rivers Spring Temperature 历史气候时空变化春季气温河冰环境变化破裂观测记录量化
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