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Welcome to the Canadian Ice Service Archive (CISA)
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The Canadian Ice Service Archive (CISA) is divided into two major sections:

  • the Archive Data section,
  • the Climatic Products section

The Archive Data section provides access to the Canadian Ice Service's on-line ice charts (including Regionals since 1968 and Dailies since 1999) as well as to ice thickness data for Canadian stations. For more information about CIS archive data please visit the Archive Data Overview page.

The Climatic Products section introduces the CIS Digital Archive - Regional Charts dataset used in the production of our climatic products. Various climate products based on this dataset such as climatic ice atlases, ice cover graphs for climate variability and departure from normal products are also introduced and accessible on-line. For more information on the CISDA and CIS climatic products, please visit the Climatic Products Overview page.

Archive News

Canadian Arctic Sea Ice Conditions - (14 September 2007)

A new page on climate change and sea ice in the Canadian Arctic is now available on the CIS web site. This provides up to date information on ice conditions in the Canadian Arctic.
Link

Colour Charts Available in the On-line Archive - (12 June 2007)

All WMO CT and SD colour charts produced by CIS since their first issue in December 2003 are now available in the archive section of the web. Users will be able to selectively retrieve the Regional or Daily WMO colour charts in GIF format by selecting one of the 2 new collections offered in the On-line Charts interface.
Go to the On-line Chart interface

Changed Ice Graph northern areas season start date - (18 May 2007)

The season start date for the Northern regions in the Ice Graph application has been changed from the standard 25 June to 14 May. This to accommodate users wanting to view and compare ice cover from recent charts for the 2007 season. However, users should note that for the period 1968-1979 interpolated data outside of the standard season "25 June-15 October" is not reliable and should not be used in comparisons.
We have also started issuing our standard Weekly Ice Cover graph for the Northern areas as of 14 May 2007. The other 2 ice cover products will start only on June 25.

Great Lakes Weekly Regional Ice Chart E00 Files Added to On-line Archive - (10 May 2007)

E00 files for the Great Lakes from 1972 through to 2005 have been added to the On-line archive under the CIS Regional Ice Charts collection. Please note that for the period 1996-2000, the E00 products are from NIC while the GIF corresponds to the CIS product and the dates may differ slightly.

Ice Cover Products and Ice Graph Tool - (19 April 2007)

Ice Cover Products and Climate Variability
A suite of new standard Ice Cover products is now available to allow users to easily compare the ice cover on the current Regional ice chart to those of other weeks and years. These and the Departure from Normal Products are useful for studies of climate variability and trends.
Ice cover products

Ice Graph Tool

A web version of the Ice Graph Tool used to generate the standard Ice cover products is now also available on the web. With this tool, the user will be able to generate his own ice cover products for other regions as well as other types of ice cover products.
Try the Ice Graph Tool

For more information go to the Climate Variability page.

Changes to Ice Archive page - (19 April 2007)

A new Welcome page with a What's new section was added. Climate Variability products and other info were added to the Climatic Products section and overview. Links have been added to a few Ice Archive web pages to allow users to quickly access data and products. More changes are coming.