Facts about Global Sea Level Rise
- 05
Low-lying island nations such as Tuvalu and the Maldives face existential threats from global sea level rise, potentially rendering them uninhabitable within decades.
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Even a relatively small rise in global sea levels significantly increases the frequency and severity of coastal flooding events in low-lying regions worldwide.
- 03
Melting ice sheets in Greenland and Antarctica are now the largest contributors to global sea level rise, surpassing ocean thermal expansion.
- 02
Thermal expansion of ocean water accounts for roughly one-third to one-half of observed global sea level rise, as warming causes water to expand in volume.
- 01
Satellite measurements show global sea level rise has accelerated in recent decades, with the rate roughly doubling compared to the 20th century average.