Northeastern U.S. set a world record by rising sea levels


The U.S. Geological Survey has found that the fastest rising sea level in the north-east coast of the United States between North Carolina and Massachusetts.Curiously, two weeks before the North Carolina Senate approved a bill banning public authorities to inform predictions regarding the increase in the rate of sea level rise.Point on the north-east coast of the U.S., where the sea level is rising most strongly (the image of the author.)Asbury Sellendzher and his colleagues analyzed data from tidal gauges in North America from 1950 to 2009 and found that the rate of sea level rise along the northern part of the east coast — from Cape Hatteras (North Carolina) to Boston (Massachusetts) — are growing 3-4 times faster than the rest of the world.In absolute terms, the level of the sea in this area since 1980, rising to 2-3,7 mm per year, while the average is 0.6-1 mm.The results are consistent with a slowing circulation of the Atlantic Ocean, which may be due to changes in temperature, salinity and density of the polar waters.Researchers predict that by 2100 the sea level will rise in this place on 20-29 cm more than the rest of the world. On average, oceanographers believe, it will rise about a meter.Regional differences are explained by the growth rate mismatch of temperature and salinity, and atmospheric pressure are not the same.For the countries of the bill under discussion in North Carolina, it only prohibits the exponential extrapolation, requiring linear projections based on historical data. Following international condemnation of the state House of Representatives rejected the bill. However a compromise reached by the House and the Senate, means there will be a moratorium on the exponential analysis for three or four years.According to local media, the bill — the work of lobbyists from a number of industries and coastal municipalities, who fear that the projections will frighten off investors and developers. The main argument was an article published last year in the Journal of Coastal Research, James Huston, a former director of the Research Center of the Corps of the Armed forces of the United States, and Robert Dean of the University of Florida. It stated that since 1930, global sea-level rise slowed.In an interview, Mr. Dean has accused his colleagues of bias: "In the United States, there is too much emphasis on unrealistically high sea level rise. This is the position of the majority of scientists. And the reason — in budgets. I retired, so now I can freely say what they think about it, not being afraid to remain without grants. "Mr. Sellendzher and colleagues point out that Houston and Dean, to put it mildly, are mistaken.North Carolina is not alone. In 2011, the Texas Commission on Environmental Quality has removed all references to the rise in sea level from its own research Galveston Bay, and two weeks ago, the General Assembly of Virginia passed a bill repealing the state government ordered the study of sea level rise and climate change.The study is published in the journal Nature Climate Change.Prepared according to Nature News.

Source: science.compulenta.ru.

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