ClimateData.ca has been updated with two marine datasets: Relative Sea-Level Change (RSLC), updated to CMIP6, and a new Vertical Allowance dataset. These datasets provide information to support coastal adaptation planning, infrastructure design, and risk assessments in response to climate change-driven sea-level change.
Canada’s coastline is increasingly exposed to the impacts of climate change, including rising sea levels and extreme water-level events. To aid coastal planners, engineers, and decision-makers, ClimateData.ca now provides access to two complementary datasets:
Note: The vertical allowance dataset provides general guidance at a national scale, but does not replace the need for local projections or risk assessments, particularly when planning for critical infrastructure or site-specific developments. It is best used as a complement to more detailed local data, where available.
Accurate and location-specific sea-level change data is essential for developing effective adaptation strategies. The Vertical Allowances Dataset helps determine how much an asset, such as a hospital, pier, or house, should be elevated to maintain an acceptable probability of flooding over its design lifetime. Meanwhile, the RSLC Dataset allows users to explore site-specific relative sea-level projections and understand how changes vary across Canada due to regional factors such as vertical land motion, ocean currents, and gravitational effects.
These datasets are particularly valuable for:
For more information on how to use these datasets and incorporate them into adaptation planning, contact the Climate Services Support Desk for assistance.