The rise in sea level in Metro Manila’s coastlines is much higher than the global average. The National Mapping and Resource Information Authority (NAMRIA) revealed this in a coastal engineering summit held recently in Batac, Ilocos Norte Based on NAMRIA’s findings, sea level in Metro Manila has risen by an average of 8.4 millimeters a year from 1901 until 2022, almost three times the global average of 3.4 mm/year in the same period. Namria attributed this in part to the “coupling effect” of sea level rise and land subsidence — the gradual sinking of the earth’s surface.

The Editorial Board. (2023, September 1). Rising sea level and Manila Bay reclamation projects [Editorial]. Manila Bulletin, p. 10.