Fig. 5: Impact of the North Atlantic Sea Surface Height (SSH) tripole on coastal-flood risk. | Nature Communications

Fig. 5: Impact of the North Atlantic Sea Surface Height (SSH) tripole on coastal-flood risk.

From: Atlantic meridional overturning circulation increases flood risk along the United States southeast coast

Fig. 5

a The number of flood days per year between 1993 and 2020 at each tide gauge used in this study (indicated on the vertical axis). A flood day is defined as the day when the water level exceeds the Minor flood threshold for 1 h or more. b The difference between the actual number of flood days and the number of flood days after subtracting the tripole-related sea level from tide gauge records. The positive/negative values indicate years and tide gauges, when and where the North Atlantic SSH tripole was increasing/decreasing the frequency of floods. The horizontal dashed lines show the approximate locations of Cape Hatteras and the boundary between the U.S. Atlantic and Gulf coasts.

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