Seas spanning America’s coastlines are growing faster and will be 10-12 inches higher by 2050, and major eastern cities are regularly hit with costly flooding even on sunny days, a government report said.
The National Oceanic and Atmospheric Administration and six other federal agencies released a 111-page report Tuesday warning of “significant consequences” of sea rise over the next few decades, with some Louisiana and Texas forecasting water to be 0 and a half feet. , 45 meters) above.
However, the worst of long-term sea level rise as a result of melting ice sheets in Antarctica and Greenland is unlikely to happen by 2100, the study’s lead author said.
Due to climate change on the country’s coastlines in the next 30 years, sea levels will rise on average, as in the previous century , said lead author William Sweet, oceanographer of the National Oceanic Service NOAA.
Warmer water is expanding, and melting glaciers and glaciers are adding more water to the world’s oceans.
The report “is the equivalent of NOAA sending a red flag” to accelerate sea level rise, said geoscientist at the University of Wisconsin-Madison Andrea Dutton, a sea level specialist who was not included in the federal report. floods in the US “will reach a whole new level in just a couple of decades.”
“We can see this freight train going more than a mile away,” Datan said in an email. “The question is whether we will continue to let the houses into the ocean.”
Sea levels are rising higher in some places than in others due to the sinking of land, currents and water from melting ice. The United States will receive slightly higher sea level rise than the world average. And the biggest growth in the U.S. will be on the Gulf Coast and the East Coast, while the West Coast and Hawaii will suffer less than the average, World said.
For example, by 2060 expect nearly 25 inches (0.63 meters) of sea level rise in Galveston, Texas, and just under 2 feet (0.6 meters) in St. Petersburg, Florida, while only 9 inches (0.23 inches) in Seattle and 14 inches (0.36 meters) in Los Angeles, the report said.
While higher seas cause much more damage when storms, such as hurricanes, break off the coast, they become a problem even on sunny days.
Cities such as Miami Beach, Florida; Anapolis, Maryland; and Norfolk, Virginia, already receive several small “unpleasant” floods a year during high tide, but by the middle of the century they will be replaced by several “moderate” floods a year that damage property, the researchers said.
“These will be areas that have not been flooded, but will start to flood,” Svit said in an interview. “Many of our major metropolitan areas on the east coast will be increasingly at risk.”
The west coast of the Gulf of Mexico is expected to suffer the most with the highest sea level rise – 16 to 18 inches (0.4 to 0.45 meters) – by 2050, the report said. This means more than 10 moderate floods on a sunny day and one “big” flood per year.
In the eastern Gulf of Mexico by 2050, sea levels are expected to rise from 14 to 16 inches (0.35-0.4 meters) and three moderate floods on a sunny day a year. By the middle of the century, the southeast coast should raise sea levels by 14 inches (0.3-0.35 meters) and four moderate floods on a sunny day a year, while the northeast coast should gain from 0.25 up to 0.3 meters) sea level rise and six moderate solar floods per year.
Both in Hawaii and on the southwest coast by the middle of the century we should expect sea level rise of 6-8 inches (0.15-0.2 meters), and on the northwest coast – only from 0.1 to 0 , 15 meters. The Pacific coast will receive more than 10 minor floods on a sunny day a year, but only about one moderate one a year, and in Hawaii – even less.
And that’s only until 2050. The report predicts that by the end of the century the United States will have an average sea level rise of about 2 feet – more in the East, less in the West – by the end of the century.
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