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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 three major sections:

  • the Archive Data section,
  • the Climatic Products section
  • the Latest, Past and Future Ice conditions 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.

The Latest, Past and Future Ice conditions section provides information about current ice conditions for the Canadian Arctic , the Great Lakes and the Canadian East Coast but can also show statistical information on past ice conditions over these areas. Furthermore the expected ice conditions for this winter are provided with the Seasonal Outlook.

Archive News

New Climate Information in the Canadian Arctic (01 July 2008)

Improvements to the Canadian Arctic web page provides information to monitor current ice conditions and compare to normal conditions and past years as well as to maximum and minimum record years. The information is also provided for several sub-regions including the Northwest Passage.

Archived Daily Iceberg Analysis Charts Now Available Online (06 June 2008)

Archived daily iceberg analysis charts are now freely available on our public web site. Charts are available from 2005 to current date, and will soon be available from 1988 when the first iceberg charts were produced.

To access the charts go to our web site and click on "Ice Archive" located on top of any of our pages. Then go to the left hand column to "Archive Data" and click the "On-Line Charts".

Latest, Past and Future Ice conditions (12 Dec 2007)

The Climate Change section has been renamed “Latest, Past and Future Ice Conditions” and it now contains information about the Great Lakes and East Coast regions in addition to the Canadian Arctic.

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.