Since 1900, global sea level has risen from 10 to 20 cm, of which the rise occurred only 3 cm between 1993 and 2003. From time to time appear everywhere some physiological changes in sea level. Thanks mostly to satellite measurements, experts have found that globally we are probably rising, albeit unevenly distributed on Earth, due to changes in sea currents and temperatures.
Scientists have not yet what caused the rise in sea level. Most of the link with global warming, which, inter alia contributes to melting glaciers and polar ice caps in general. The water from melting ice feeds the seas, gradually raising the level but also by reducing the salinity.
The calculations show that this situation will continue. According to the Intergovernmental Committee of the UN Climate Change (IPCC), the level of the oceans by the year 2100 will rise from 9 to 88 cm. How big will the increase depends mainly on greenhouse gases in the atmosphere. But even if the release is limited, there is no doubt that the rising level will continue to some extent after 2100.
If this estimate proves to be correct, millions of people in coastal areas with low altitude at risk of homelessness in the future from flooding. Large areas of Bangladesh will come under water, and will also be threatened cities such as Calcutta, London, New York, or even Greece.