Short Wave Nature Quest: How High Will Sea Levels Rise?
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Sep 30, 2025 The podcast dives into the pressing question of sea level rise and its local impacts, focusing on Santa Cruz. It highlights scientific consensus on expected ocean elevations by 2050, revealing a projected rise of about one foot locally. The discussion extends to variations along U.S. coasts, explaining how ocean dynamics and climate factors create regional disparities. Moreover, experts explore potential strategies to mitigate long-term sea level increases by cutting emissions. Dive into these vital issues and learn how your area might be affected!
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Listener Sparks This Episode
- Peter Lansdale from Santa Cruz asked how many feet the sea will rise in the next decades because local cliffs and beaches are already changing.
- His question prompted the episode's focused explanation of regional and global sea level projections.
Near-Term Global Rise Is Well Known
- Global mean sea level is about nine inches higher now than in the 1880s and keeps accelerating.
- By 2050 scientists project roughly 15 inches above 1880s levels, with high confidence for this timeframe.
Local 2050 Projections Are Precise
- Santa Cruz is projected to see about one foot of sea level rise by 2050 relative to 2000, plus or minus a few inches.
- Scientists say predictions for the next few decades have low uncertainty because of climate system lag times.