Global sea level in December 2014. Sea level rise is caused primarily by two factors related to global warming: the added water coming from the melting of land ice and the expansion of sea water as it warms. This chart tracks the change in sea level since 1993 as observed by satellites. Graphic: NASA

(NASA) – Sea level rise is caused primarily by two factors related to global warming: the added water coming from the melting of land ice and the expansion of sea water as it warms. This chart tracks the change in sea level since 1993 as observed by satellites.

Sea Level

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