Wednesday November 30, 2022
LiveScience —
Sea levels are likely rising faster than previously thought, meaning low-lying coastal cities in the U.S. could flood far more regularly in the coming decades, a NASA study has revealed.
According to the study, which analyzed three decades of satellite observations, by 2050, sea levels along the coastlines of the contiguous U.S. could rise as much as 12 inches (30 centimeters) above current waterlines, the research team said in a statement. The Gulf Coast and Southeast are expected to be most severely impacted, and will likely experience increased storm and tidal flooding in the near future, according to the study, published Oct. 6 in the journal Communications Earth and Environment.
The findings support the “higher-range” scenarios laid out in February in the multi-agency Sea Level Rise Technical Report. The report suggested that “significant sea level rise” is liable to hit U.S. coasts within the next 30 years, predicting 10 to 14 inches (25 to 35 cm) of rise on average for the East Coast; 14 to 18 inches (35 to 45 cm) for the Gulf Coast; and 4 to 8 inches (10 to 20 cm) for the West Coast.”
NASA’s study built on methods used in the earlier multi-agency report, and was headed by a team of researchers and scientists based at the Jet Propulsion Lab in California, which is dedicated to both exploring the deepest recesses of space, and also using satellites to “advance understanding” of Earth.