The long-term rise or fall of global or regional mean sea level, driven over recent decades chiefly by the thermal expansion of warming ocean water and the addition of meltwater from glaciers and ice sheets, alongside regional factors such as land subsidence or glacial isostatic rebound. Sea level change reshapes coastlines gradually but is also a key driver of increasing coastal flood risk.
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1. Sea Level Change (Wikipedia)
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The sea level has generally been rising since the end of the Last Glacial Maximum, which was around 20,000 years ago. Between 1901 and 2018, the global average sea level rose by 15-25 cm (6-10 in), with an increase of 2.3 mm (0.091 in) per year since the 1970s.
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