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Over the past 100 years, the global average sea level has risen by roughly 7 inches. This rise has been fuelled by two key factors — the added water from melting land ice, and the expansion in volume of seawater as it absorbs heat from the atmosphere.
If we examine the trend over the past 20 years alone, world's oceans have warmed at a rate of 0.12 degrees Celsius per decade — a continuation of the trend that began in the last half of the 20th century, when humans began pumping massive quantities of heat-trapping greenhouse gases into the atmosphere.
Source: International Business Times
