Last updated on April 19, 2014 at 1:20 EDT
ALISON Image 8
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ALISON (Image 8)

June 24, 2010
ALISON (Image 8) Graphs showing all the ice thickness data obtained at ALISON (Alaska Lake Ice and Snow Observatory Network) study sites in the winter of 2003-2004. Note that the vertical scales are different. The data reveal the effects of spatial variability in winter climate on lake ice thickness. For example, the thickest ice occurs in Barrow, Alaska, where it is cold and the wind reduces the snow depth and increases the snow density; consequently, the ice is not well insulated and grows more slowly to a lesser thickness. Ice thickness data obtained over the course of many winters in many locations will allow us to understand inter-annual variability and its response to climate variability and change. ALISON is a science education and scientific research partnership between the University of Alaska, Fairbanks, and the K-12 education community in Alaska. This research was supported by National Science Foundation Office of Polar Programs grants OPP 01-17645 and OPP 03-26631. (Date of Image: 2005) [One of 8 related images. See Next Image.]