![]() People lose their jobs because they can’t get to work. "If it floods 10 or 15 times a month, a business can’t keep operating with its parking lot under water. The study was carried out by Nasa's Sea Level Change Science Team based at the University of Hawaii.Īssistant professor Phil Thompson, lead author of the report, said: "It’s the accumulated effect over time that will have an impact. The study looked at "high-tide floods," also known as "nuisance floods," which are not as devastating as storm surges caused by hurricanes.Īccording to the National Oceanic and Atmospheric Administration (NOAA), the US had around 600 of them in 2019.Ĭoastal areas of the US could see three or four times as many annually from the mid-2030s, Nasa said. He said it was crucial to plan ahead to protect businesses and people's livelihoods. "The combination of the moon’s gravitational pull, rising sea levels, and climate change will continue to exacerbate coastal flooding on our coastlines and across the world." Josie Fischels is an intern on NPR's News Desk.Bill Nelson, head of the space agency, said: “Low-lying areas near sea level are increasingly at risk and suffering due to increased flooding, and it will only get worse. "We're going to see these big dramatic shifts in the next decade or two." "A lot of the projections that we as scientists give to coastal planners are up to 2100, but the impacts that we're going to see because of how these different factors and processes are combining are much nearer term," he said. ![]() Hamlington said cities and urban planners along the coasts that are already familiar with high tide flooding have been acting to prevent future damage, but the study's assessment means higher hides and longer floods are coming faster than anticipated. "The combination of the moon's gravitational pull, rising sea levels and climate change will continue to exacerbate coastal flooding on our coastlines and across the world." Coastal cities have already started to act, but dramatic flooding is coming faster than many once thought "Low-lying areas near sea level are increasingly at risk and suffering due to the increased flooding, and it will only get worse," NASA Administrator Bill Nelson said. Floods, the study predicts, could also start occurring in "clusters" that last a month or longer, depending on how the sun, moon and Earth are positioned, according to NASA. But the study shows that high tides will exceed flooding thresholds more often. ![]() The National Oceanic and Atmospheric Administration reported continued record-setting high tide, or sunny day, flooding in 2019. High tides already exceed known flooding thresholds around the United States. ![]() "The same variability in the past that didn't cause flooding is now going to cause flooding." "We're getting closer and closer to the flooding thresholds or tipping point in these coastal locations," he said. ![]() Half of the moon's 18.6-year cycle creates lower high tides and higher low tides the other creates higher high tides and even lower low tides.īut NASA says global sea level rise will likely push those high tides higher, and one of the study's co-authors, NASA Sea Level Change Team leader Ben Hamlington, said that because waters will be higher, this moon cycle could have a much more dramatic effect. The moon's orbit is due for its regular "wobble." That is entirely natural, NASA says, and it has been recorded as far back as 1728. ![]()
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