Arctic warming has begun to lengthen the ice-free season, and prolonged warming could result in the NW Passage being navigable through significant parts of the year. The research draws on paleo-environmental records to provide empirical models of sea-ice conditions. Methodological issues include resolving the relationship between modern sea-ice and climate variables, and documenting Holocene sea-ice history and corresponding terrestrial climate history of the Northwest Passage.

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Art Dyke