Author(s): C. Wang; M. Lepparanta; K. Shirasawa; O. Huttunen; M. Ishikawa; T. Takatsuka
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Abstract: An automatic floating ice station was used in Lake Paajarvi, Lammi in winter 2003 for monitoring the evolution of the ice conditions. The instrumentation included atmospheric, ice, and water sensors: temperature, humidity, wind speed and solar radiation for air; temperature and PAR (Photosynthetically Active Radiation) for ice; and temperature and currents for water. The station was deployed on the 15th of December 2002, and it was active for ice sensors until April 3 and for water and air sensors well beyond the final melting of the ice. At the time of the deployment the ice sheet was 25 cm thick, clear congelation ice, and it grew to the local record thickness of 80 cm during the winter. The station is the first of its kind, full air-ice-water recording system, used in Finnish lakes. The data and results are given in this presentation, concerning the ice heat budget and the transfer of solar radiation through the ice.
Year: 2004