Ice-out Watch 2009 (false colour) - April 19

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Satellite image of ice break-up in Temagami, 2009

Posted Mon Apr 20, 2009                                                                         Photo: NASA/NOAA

Temperature rise has impact

Thick ice and lots of snow have slowed ice-out this year, but things have quickened in recent days.

Since April 11 daytime temperatures have been above freezing and a few nights did not drop back to freezing.



False colour, like infrared, enhances the view of ice and snow.


Black open water or thin, clear ice
Dull/ dark blue thin ice with little or no snow cover
Bright turquoise thick ice, snow-covered ice or snow on unforested land  (e.g. clearcuts, farmland)



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