A climate study projects that sea levels will rise by 2.5 cm every 5 years. If the current sea level is 0 cm relative to a baseline, how high will it be in 75 years?

Sun, 03 May 2026 00:41:52 +0000

**A climate study projects that sea levels will rise by 2.5 cm every 5 years. If the current sea level is 0 cm relative to a baseline, how high will it be in 75 years?**
This steady increase reflects a growing pattern observed in recent climate research, with real-world data supporting consistent acceleration in coastal rise. If this 2.5 cm rise every five years continues uninterrupted, what will the long-term projection be for sea level in 75 years? The calculation is straightforward: over 75 years, there are 15 five-year intervals, so multiplying 2.5 cm by 15 yields a rise of 37.5 cm. When starting from 0 cm, this results in a total sea level increase of 37.5 cm by the year 2100. This projection is gaining traction across scientific circles and public discourse, especially in coastal regions where even small changes influence long-term planning. The study, grounded in satellite altimetry and tide gauge records, aligns with broader assessments showing global sea levels rising at an increasing rate due to thermal expansion and ice sheet melt. For the average reader, especially those following climate trends or near vulnerable coastlines, understanding this timeline offers clarity on a key environmental shift. **Why is this projection drawing attention in the U.S.?**
Rising seas are no longer distant projections—coastal communities across America are already experiencing more frequent flooding, especially during high tides and storm events. The steady 2.5 cm per 5-year increase mirrors observable changes, fueling awareness and preparedness. Economic risks to infrastructure, real estate, and insurance are prompting conversations about adaptation strategies. Public interest strengthens as studies connect gradual sea level rise to shifting planning priorities in cities from Miami to Norfolk.