Chapter 01: What Is the Geographic Approach? 1 WHAT IS THE GEOGRAPHIC APPROACH? The sea level along US coastlines is projected to rise an average of 10–12 inches (0.25–0.30 meters) from 2020 to 2050—an increase equaling the rise measured during the 100 years from 1920 to 2020. Sea level rise will vary regionally along US coasts because of changes in land and ocean heights. This GIS visualization shows Miami Beach, Florida, in 2090 and the structures impacted by sea level rise based on the projected intermediate-high scenario of 1.5 meters of global sea level rise by 2100.
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