Experts say that global sea levels rose by an average of 1.8 millimetres per year from 1961-2003. – AP Photo

WASHINGTON: Sea levels from Cape Hatteras to Cape Cod are rising at a faster pace than anywhere on Earth, researchers at the US Geological Survey report.

This makes coastal cities and wetlands in this densely-populated US corridor possibly more vulnerable to flooding and damage.

Climate change is causing higher sea levels around the world, as land-based glaciers like those on Greenland melt and slide into the oceans and as warming ocean water expands.

But seas don’t rise at the same rate, and for 600 miles (966 km) along the US Atlantic coast, the water is rising more rapidly than elsewhere on the globe, USGS scientists reported on Sunday in the journal Nature Climate Change.

In this “hot spot” of rising sea levels, variations in ocean currents and sea water temperature and salinity push oceans upward along the coastline, the scientists said.

It could have an impact on some of the biggest urban areas along and near the East Coast, including Boston, Providence, New York City, Philadelphia, Baltimore and Norfolk-Virginia Beach, especially when storm surges push water inland.

Researchers found that sea levels in this corridor were rising between three and four times faster than the global average, and they fit with computer simulations aimed at predicting the effects of climate change.

One reason for the accelerated rise in the Atlantic Ocean along the East Coast is an apparent slowdown in the Atlantic Meridional Overturning Circulation, a massive current sometimes called the “conveyor belt,” study author Asbury Sallenger Jr. said by telephone from St. Petersburg, Florida.

The melting of glaciers, which are made of compacted snow, sends fresh water into the salty Atlantic and into this current, Sallenger said.

“It turns out that this leads to a slowdown across the whole system ... including the currents that run along the coast of the United States,” he said. “And there are ways by slowing down those currents; you change the level of the sea against the coastline.”

Using long-term data from tidal gauges along the cost, the researchers determined that is occurring.

The USGS’s study followed another report issued Friday by the National Research Council that indicated that much of California could see sea levels rise to above levels projected for the world as a whole by 2100.

That earlier study focused on how much the sea might rise; the USGS’s report examined how fast the seas were rising on the East Coast.

The discovery of the “hot spot” could help coastal cities plan for rising seas and predict the submergence of saltwater marshes, which provide habitat for commercial fisheries and buffer the effect of storms.

Opinion

Editorial

Wheat price crash
Updated 20 May, 2024

Wheat price crash

What the government has done to Punjab’s smallholder wheat growers by staying out of the market amid crashing prices is deplorable.
Afghan corruption
20 May, 2024

Afghan corruption

AMONGST the reasons that the Afghan Taliban marched into Kabul in August 2021 without any resistance to speak of ...
Volleyball triumph
20 May, 2024

Volleyball triumph

IN the last week, while Pakistan’s cricket team savoured a come-from-behind T20 series victory against Ireland,...
Border clashes
19 May, 2024

Border clashes

THE Pakistan-Afghanistan frontier has witnessed another series of flare-ups, this time in the Kurram tribal district...
Penalising the dutiful
19 May, 2024

Penalising the dutiful

DOES the government feel no remorse in burdening honest citizens with the cost of its own ineptitude? With the ...
Students in Kyrgyzstan
Updated 19 May, 2024

Students in Kyrgyzstan

The govt ought to take a direct approach comprising convincing communication with the students and Kyrgyz authorities.