Coastal cities like Miami, shown, already experience high-tide flooding. But a new federal interagency report projects an uptick in the frequency and intensity of such events in the coming decades because of rising seas. Credit: B137 (CC-BY)
In Brief:
NASA, NOAA, USGS, and other U.S. government agencies project that the rise in ocean height in the next 30 years could equal the total rise seen over the past 100 years.
Coastal flooding will increase significantly over the next 30 years because of sea level rise, according to a new report by an interagency sea level rise task force that includes NASA, the National Oceanic and Atmospheric Administration (NOAA), and other federal agencies. Titled Global and Regional Sea Level Rise Scenarios for the United States, the Feb. 15 report concludes that sea level along U.S. coastlines will rise between 10 to 12 inches (25 to 30 centimeters) on average above today’s levels by 2050.
The report – an update to a 2017 report – forecasts sea level to the year 2150 and, for the first time, offers near-term projections for the next 30 years. Agencies at the federal, state, and local levels use these reports to inform their plans on anticipating and coping with the effects of sea level rise.
“This report supports previous studies and confirms what we have long known: Sea levels are continuing to rise at an alarming rate, endangering communities around the world. Science is indisputable and urgent action is required to mitigate a climate crisis that is well underway,” said NASA Administrator Bill Nelson. “NASA is steadfast in our commitment to protecting our home planet by expanding our monitoring capabilities and continuing to ensure our climate data is not only accessible but understandable.”
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The task force developed their near-term sea level rise projections by drawing on an improved understanding of how the proce …