Images

The Canadian Ice Service produces the following types of images:

RADARSAT Mosaics

These RADARSAT image mosaics compliment the regular weekly regional sea ice charts produced for 3 Canadian Arctic areas.  These mosaics provide a high level of detail on ice conditions for a given area, as interpreted from Synthetic Aperture Radar imagery. Under ideal conditions, this imagery can have a resolution of 100 metres. However, the images are affected by rough sea conditions, the presence of water on the surface of the ice during the melting season, and by heavy rainfall.

RegionAvailabilityImage
Western ArcticWeekly year-roundLatest
Eastern ArcticWeekly year-roundLatest
Hudson BayWeekly year-roundLatest

MODIS Composites

The product consists of 7 day MODIS satellite composite images compiled to create a mosaic image of the Arctic Basin.  It is available when there is sufficient daylight to show the ice conditions.

The product is presented in two ways:  a True-Colour Composite image and a False-Colour Composite image. 

  • The True-Colour Composite image: features appear in their natural colour (i.e. snow, sea ice and clouds all appear white).  As a result, care must be taken to distinguish sea ice from clouds.
  • The False-Colour Composite image: image highlights colour differences between sea ice and cloud.  As a result, sea ice and snow appear light blue and clouds appear white (and purple over water).

The MODIS composite is created every Wednesday using the preceding week’s images. 

RegionAvailabilityImage in False-ColourImage in True-Colour
ArcticFebruary 15 and November 1LatestLatest

Ice in Canadian Waters

This product is generated once per day and consists of the last 20 days of Canadian Ice Service's Daily and Regional Charts which are then compiled to create a graphical product that is intended to give the user a general portrayal of ice in Canadian waters.

The product is created by superimposing the input data on top of one another, with the most recent data appearing on the top. The output is then symbolized to indicate the varying concentrations of ice.

Lower concentrations of ice are depicted in blues; higher concentrations are depicted in greys and white; areas of no ice are shown in dark blue; and areas not analyzed by the Canadian Ice Service within the given time period are depicted in black.

Ice in Canadian Waters Animation

This product is generated once per day and consists of the last 10 days of Canadian Ice Service Ice in Canadian Waters products. The animation is intended to give the user a general portrayal of how ice in Canadian waters has changed over the indicated period.

The product is created by inserting the input Ice in Canadian Waters products into frames in the animation.

Lower concentrations of ice are depicted in blues; higher concentrations are depicted in greys and white; areas of no ice are shown in dark blue; and areas not analyzed by the Canadian Ice Service within the given time period are depicted in black.

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