Sea levels along Indian coast rising at faster rate than global average: WMO report
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The increase in sea levels is not happening uniformly in all parts of the global oceans. In the Indian Ocean region, the rate of sea-level rise is the fastest in the south western part, where it is faster by 2.5 mm / year than the global average.
In other parts of the Indian Ocean region, including the coastlines, the rate is between 0 and 2.5 mm / year, faster than the global average.
Other regions where the rate is faster than the global average are the western Tropical Pacific, the South-west Pacific, the North Pacific and the South Atlantic.
“Regional patterns of sea-level change are dominated by local changes in ocean heat content and salinity,” the report pointed out.
The Indian Ocean region has previously been described as the fastest warming ocean in the world, with an increase in temperature of one degree Celsius as against the global average of 0.7°C between 1951 and 2015. Ocean heat content had already reached record levels in 2021 globally.
Such a sea-level rise could have major consequences for the millions of people living along the Indian coastline. While gradual erosion of the coastline, subsidence and inundation of deltas are a long-term concern for the people living close to the sea, the immediate concern is to do with the combined impact of tropical cyclones and sea-level rise.
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