It seems that we may expect sea level rise of between 40 and 55 mm (1.6-2.2 in.) above present sea level in 2020. Bearing in mind that an average beach gradient is about 1%, this translates into shorelines moving inward by 4 to 5.5 m (13 to 18 ft.) by 2020.
In the previous century, ocean levels have risen 8 inches. It is projected that by the end of our current century, they will rise another 55 inches. As global warming becomes more and more prominent, the process is speeding up. By 2020, we will see it raised by at least a few inches more.
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