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Seas have Drastically risen along Southern U.S. coast in past decade
Multiple new studies highlight a rate of sea level rise that is ‘Unprecedented in at least 120 years’ along the Gulf of Mexico and Southeastern U.S. coast
April 10, 2023 - Washington Post""Scientists have documented an abnormal and dramatic surge in sea levels along the U.S. gulf and southeastern coastlines since about 2010, raising new questions about whether New Orleans, Miami, Houston and other coastal communities might be even more at risk from rising seas than once predicted.
The Acceleration, while relatively short-lived so far, could have far-reaching consequences in an area of the United States that has seen massive development as the wetlands, mangroves and shorelines that once protected it are shrinking. An already vulnerable landscape that is home to millions of people is growing more vulnerable, more quickly, potentially putting a large swath of America at greater risk from severe storms and flooding.
The increase has already had major effects, researchers found. One study suggests that recent devastating hurricanes, including Michael in 2018 and Ian last year, were made considerably worse by a faster-rising ocean. Federal tide gauge data from the National Oceanic and Atmospheric Administration suggest that the sea level, as measured by tide gauge at Lake Pontchartrain in New Orleans, is 8 inches higher than it was in 2006, just after Hurricane Katrina.
“The entire Southeast coast and the Gulf Coast is feeling the impact of the sea level rise acceleration,” said Jianjun Yin, a climate scientist at the University of Arizona and the author of one of two academic studies published in recent weeks that describe the changes.
Yin’s study, published in the Journal of Climate, calculates the rate of sea-level rise since 2010 at more than 10 millimeters — or one centimeter — per year in the region, or nearly 5 inches in total through 2022. That is more than double the global average rate of about 4.5 millimeters per year since 2010, based on satellite observations of sea level from experts at the University of Colorado at Boulder."...."
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