Rissing Seas and Global Warming

Rising of the sea level is one of the main effects of the global warming. Over the last 100 years, the global sea level has risen by about 10 to 25 cm. Sea level change is difficult to measure. The major problem is that the land experiences vertical movements and these get incorporated into the measurements. It is likely that much of the rise in sea level has been related to the concurrent rise in global temperature over the last 100 years. Other factors are more difficult to quantify. The rate of observed sea level rise suggests that there has been a net positive contribution from the huge ice sheets of Greenland and Antarctica, but observations of the ice sheets do not yet allow meaningful quantitative estimates of their separate contributions. The ice sheets remain a major source of uncertainty in accounting for past changes in sea level because of insufficient data about these ice sheets over the last 100 years.