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Sea Levels Rising: 3.5 Inches Since 1993, Flood Risks Grow

10/2/2025

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Summary

Story summary

Global mean sea level has risen about 3.5 inches since 1993, with acceleration.
About 60% of the rise comes from added water mass, mainly melting land ice.
Satellite Laser Ranging (SLR) measures gravity changes to track water movement.
Local sea levels vary due to uneven water redistribution and gravity changes.
Communities face more frequent high-tide flooding.

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Story summary

Global mean sea level has risen about 3.5 inches since 1993, with acceleration.
About 60% of the rise comes from added water mass, mainly melting land ice.
Satellite Laser Ranging (SLR) measures gravity changes to track water movement.
Local sea levels vary due to uneven water redistribution and gravity changes.
Communities face more frequent high-tide flooding.