Sea levels on the Dutch coast, 1900-2002
Rising global temperatures have resulted in a rise in the sea level off the Dutch coast by approximately 19 cm in the last 100 years.
Sea levels rising on the Dutch coast
The level of the sea has risen approximately 19 cm within a century. This is a consequence of the rise in the global temperature over the past 100 years, leading on the one hand to the melting of land ice and on the other hand to an increase in the temperature, and therefore the volume, of ocean water.
The sea level has a direct influence on the location of the coastline. Safety - for example the probability of flooding - depends in part on the average sea level.
Cause of increase in global temperature
The enhanced greenhouse effect is probably the main cause of the increase in global temperatures. The enhanced greenhouse effect is the result of increased emissions of greenhouse gases generated by human activity. The Kyoto Protocol (UNFCCC, 1997) and the UN Climate Treaty (UNFCCC, 1992; Rio de Janeiro) include agreements made with a view to stabilising concentrations of greenhouse gases and reducing emissions. The idea is that this will reduce the human impact on the climate.
Average sea levels fluctuate from year to year
The average annual sea level can fluctuate considerably. Differences between years are caused by differences in wind climate, air pressure, water temperature and the salt content of the sea under the influence of water from rivers.
