Ice 2008 (false colour) - January 10

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Satellite image: reversal of freeze-up, 2008

Satellite image: reversal of freeze-up, 2008

Posted Friday, Jan 11, 2008                                                                         Photo: NASA/NOAA

Ice reverses in January thaw

Above freezing temperatures melted most of the snow on the ice (and in the bush) and thinned ice.

With the snow gone, the ice is visible, and in some cases (Lake Nipissing) thinned areas. There are no apparent openings in Lake Temagami, or surrounding lakes.

Lake Wanapitei froze over on January 3, and is now open (see Jan 3 image below).

From a nighttime low of minus 33 on January 3, temperatures nudged above freezing on January 5. Daytime temperatures stayed above freezing, peaking at 6 C on January 7, before freezing again on January 10.

Today is below freezing, but not cold enough to thicken the ice.

In January 2003 warm temperatures kept parts of Lake Temagami open until January 10.





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


Black open water or thin, clear ice
Dull/ dark blue thin ice
Bright turquoise thick ice, or snow on unforested land  (e.g. clearcuts, farmland)



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