09/05/2026
Coastal erosion is releasing carbon into the ocean.
From Texas to Maine, coastal wetlands and marshes are releasing over 1.45 billion pounds of carbon into the ocean each year, according to new research supported by NASA.
Coastal marshes store large amounts of carbon in their plants and soil, but changes caused by storms, rising seas and human development can affect how that carbon is stored and transported.
Scientists analyzed satellite images from Landsat and USGS elevation data to track marsh loss along the Gulf Coast and Eastern seaboard from 1985 to 2022. While some of the carbon released by erosion is offset by new marsh growth, they found that the net loss is still about 800 million pounds of carbon every year.
Full story: https://go.nasa.gov/4h715nn