Sea Level

Sea level is the average level of the ocean. Changes in sea level can be caused by many different processes that occur over different timescales. Global sea levels are rising due to global heating. Along our coasts postglacial rebound is an important factor for determining local sea-level change.

Articles

Defining Sea Level and Understanding its Causes

For effective coastal management, it is important to understand how sea levels will change in the future.

Future Sea Level Along the Norwegian Coast

Greenhouse gas emissions from human activity, primarily resulting from the burning of fossil fuels, are causing our climate to warm. As a result of this, global sea levels are rising.

Web Tool for Mapping Storm Surge and Sea-Level Rise

"Se havnivå i kart" has been updated. The new map layers visualize the recommended levels on how municipalities should adapt to rising sea levels and sea level extremes, as taken from the Norwegian Directorate for Civil Protection's (DSB) new guidelines.

Observed Sea-Level Changes and Their Causes

Understanding the sources of this sea-level rise is important for improving confidence in future projections. The national sea level observing system in Norway is maintained and operated by the Norwegian Mapping Authority.