The report “Havnivåstigning i norske kystkommuner” (Sea Level Rise in Norwegian coastal municipalities, revised edition) presents estimates for future sea level rises for all coastal municipalities in Norway. The tables show estimated values for sea level rise, land rise and flooding for the years 2050 and 2100.
Directorate for Civil Protection and Emergency Planning (DSB), Norway, 12/07/2010
We may see more storm surges in the years ahead. Here from Ålesund 25 January 2008
Satellite and water level measurements show that the global sea level is rising on a millimetre scale from year to year. This is caused by warmer sea temperatures and onshore ice melting. The report estimates that globally the sea level will have risen by 65-100 cm by 2100, compared with the sea level in 2000. The most likely estimate is 80 cm.
However, the figures are by no means certain. In the course of the 21st century, the sea level along the Norwegian coast is projected to rise by approximately 70 cm along the south and west coast, approximately 60 cm in the north of Norway and by around 40 cm at the head of the Oslo and Trondheim fjords, with significant local variations.
There are three factors that determine changes in the sea level along the coast of Norway: changes in the global sea level, effects impacting the local sea level and land rise. Land rise is of great importance to our region. Norway has risen significantly after the weight of the inland ice disappeared during the previous ice age. The land will continue to rise throughout the 21st Century, but will vary from approximately 10 cm per century in the westernmost part of the country to 50 cm per century at the head of the Oslo and Trondheim fjords. It is the difference between the rise in sea and land level that will be of practical interest for the future.
There are 279 Norwegian coastal municipalities, and the values for each municipality have been calculated for one particular place in each municipality. Two measuring points have been used for municipalities with great local tide variations.
The report (only in Norwegian) “Havnivåstigning i norske kystkommuner” (Sea Level Rise in Norwegian coastal municipalities, revised edition) pdf