Sea Ice

The Canadian Ice Service (CIS), a branch of the Meteorological Service of Canada, is the leading authority for information about ice in Canada’s navigable waters. CIS provides the most timely and accurate information about sea ice, lake ice, river ice and icebergs to: • Ensure the safety of both mariners and Canadians, their property and their environment through the provision of hazardous ice condition warnings • Provide present and future generations of Canadians with sufficient knowledge to support sound environmental policies In summer and fall data collection and analysis is focussed on the Arctic and the Hudson Bay regions with daily satellite acquisitions. In winter and spring, the data collection is focussed on the Great lakes, the St. Lawrence River and the Gulf of the St. Lawrence and the Newfoundland and Labrador coasts The following products are produced: • In situ briefings, warnings, daily ice charts, image analysis charts, regional charts, observed charts, short- and long-term forecasts and iceberg bulletins and charts; specialised ice information services for Other Government Departments and research communities • Oil spill monitoring; satellite image analysis for oil spill detection • Annual Ice Atlas • Archive of climatic ice information Main gaps: Satellite monitoring of Arctic sea ice is limited to: • Canadian waters, • Bi-Weekly acquisitions from January to March • Weekly acquisitions from April to May • Daily acquisitions of areas where shipping is active from June to November Network type: various: satellite data, observations from ships and aircraft. CIS acquires and analyses thousands of satellite images, conducts millions of square kilometres of airborne reconnaissance and receives hundreds of ship and shore ice reports annually.