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The United States was able to see a century’s worth of sea level rise in just 30 years

On Friday, November 13, 2020, breakwater tourists in Charleston, South Carolina, drop their batteries at high tide. According to a US federal report released on Tuesday, February 15, 2022, the oceans hitting the US coastline are rising faster than ever. It will also be 10 to 12 inches higher by 2050, and major cities in the eastern United States will experience regular floods on high sunny days.Credits: AP Photo / Mic Smith, File

Government reports indicate that the oceans that hit the American coastline are rising faster than ever, rising 10 to 12 inches by 2050, and major eastern cities will be hit by heavy floods even on sunny days. increase.


The U.S. Marine and Atmospheric Administration and six other federal agencies issued a 111-page report on Tuesday, with sea rises in the coming decades predicted to be one and a half feet in parts of Louisiana and Texas. Warns of “significant consequences” by (0.45 meters) high.

But the worst in the long run sea ​​level rise The melting of ice sheets in Antarctica and Greenland will probably not begin until after 2100, the lead author of the study said.

Due to climate change, the country’s coastline will see as much on average Sea level William Sweet, the lead author and oceanographer at the NOAA’s National Oceanic Administration, states that it will rise over the next three decades, as it did in the last century.

Warm water expands and melted ice sheets and glaciers add more water to the world’s oceans.

Andrea Dutton, a geoscientist at the University of Wisconsin-Madison, said he was an expert on sea level rise and was not included in the federal government’s report. Coastal floods in the United States are now “raised to a whole new level in just a few decades.”

The United States was able to see a century's worth of sea level rise in just 30 years

On Sunday, November 15, 2020, a storm drain will foam as King Tide flows into a battery in Charleston, South Carolina. On average, the US coastline will experience the same amount of sea level rise in the next 30 years as it did in the previous 30 years. On Tuesday, February 15, 2022, William Sweet, chief researcher and oceanographer at NOAA’s National Oceanic Services, said climate change is accelerating the rise of the ocean. Warm water expands, and ice sheets and glaciers melt, increasing the amount of water in the ocean.Credits: AP Photo / Mic Smith, File

“You can see this freight train coming from more than a mile away,” Dutton said in an email. “The question is whether to keep the house slipping into the sea.”

There are places where the sea level is higher than elsewhere due to the sinking land, currents, and water from the melting of ice. The United States will get slightly more sea level rise than the world average. According to Sweet, the biggest rises in the United States will be on the Gulf and East Coast, while the West Coast and Hawaii will be hit less than average.

For example, between now and 2060, Galveston, Texas is expected to rise nearly 25 inches (0.63 meters), and St. Petersburg, Florida is just under 2 feet (0.6 meters), just 9 inches (0.23 inches). Sea level is expected to rise. According to the report, 14 inches (0.36 meters) in Seattle and Los Angeles.

Higher oceans cause far more damage when storms such as hurricanes strike CoastIt is becoming a problem even on sunny days.

The United States was able to see a century's worth of sea level rise in just 30 years

On Saturday, September 28, 2019, a woman walks along a flooded street caused by King Tide in Miami Beach, Florida. The lowland areas of South Florida are vulnerable to seasonal floods caused by king tides. When a storm, such as a hurricane, hits the coast, the high seas can do much more damage, but they have come to the point where they don’t need to be stormy because they are a problem. The high tide is high and water flows deeper inland even on sunny days.Credits: AP Photo / Lynne Sladky, File

Cities such as Miami Beach, Florida. Annapolis, Maryland; Norfolk, Virginia, undergoes several small “nuisance” floods a year. high tideBut they will be replaced by several “moderate” floods a year by the middle of the century, which will cause property damage, researchers said.

“Floods are starting to occur in areas where floods aren’t occurring,” Sweet said in an interview. “Many of the major metropolitan areas on the east coast will be increasingly at risk.”

The western coast of the Gulf of Mexico should be hit hardest by 2050 with the highest sea level rises (16 to 18 inches (0.4 to 0.45 meters)), the report said.And that means a flood on a sunny day and one “major” high tide that causes more than 10 moderate property damage. flood Annual event.

By 2050, sea level is expected to rise 14 to 16 inches (0.35 to 0.4 meters) in the eastern Gulf of Mexico, causing three mild sunny day floods a year. By mid-century, the southeastern coast should have sea level rises of 1 foot to 14 inches (0.3 to 0.35 meters) and mild floods on sunny days four times a year, while the northeast coast should have 10 inches to feet (10 inches to feet). It should be 0.25 to 0.3 meters). (M) of sea level rise and six moderately sunny day floods a year.

  • The United States was able to see a century's worth of sea level rise in just 30 years

    Part of the sidewalk near the Jefferson Memorial is flooded at high tide in Tidal Basin, Washington, Wednesday, April 3, 2019. Tidal Basin, an artificial 107-acre reservoir adjacent to the Jefferson Memorial, where cherry trees are most concentrated, caused chronic flood problems.Credits: AP Photo / Ashraf Khalil, File

  • The United States was able to see a century's worth of sea level rise in just 30 years

    On Thursday, August 19, 2021, workers will build a sand shore to prevent flooding north of Balboapia during high tide in Newport Beach, California. The coastline of the United States is rising faster than ever, rising 10 to 12 inches by 2050, and major cities in the eastern United States are regularly flooded with high sunny days.Credits: Jeff Gritchen / Orange County Register via AP

By mid-century, sea levels are expected to rise by 6-8 inches (0.15-0.2 meters) on both the Hawaiian Islands and the southwest coast, and only 4-6 inches (0.1-0.15 meters) on the northwest coast. The Pacific coastline has more than 10 small, annoying sunny day floods a year, while Hawaii has a mild flood about once a year, and Hawaii is even less. increase.

And that’s just until 2050. By the end of the century, the report predicts an average of about two feet of sea level rise in the United States.


U.S. scientists raise sea level by 2100


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Quote: The United States has acquired February 15, 2022 from https: //phys.org/news/2022-02-century-worth-sea-years.html for only 30 years (February 15, 2022). I was able to see the rise of the sea for a century.

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The United States was able to see a century’s worth of sea level rise in just 30 years

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