El Niño Could Cause Record Sea Levels on California Coast
Scientists warn about the impacts of El Niño.
1Impacts of El Niño
El Niño occurs when sea surface temperatures in the tropical Pacific Ocean rise above average. This shifts global weather patterns and increases Earth's average temperature. Regions like California may see significant sea level rises. Scientists predict this year's El Niño could break records.
2Thermal Expansion and Sea Levels
One of the main reasons El Niño raises sea levels is thermal expansion. As water temperature increases, its volume also increases, causing the Pacific Ocean to expand. Additionally, El Niño leads to more rainfall, particularly in Southern California, further elevating sea levels.
3Storms and Waves
El Niño winters are characterized by larger waves and stronger tides in Southern California. This increases the risk of coastal flooding. Scientists warn that this year's El Niño could cause significant increases in wave heights and king tides.
4Current Sea Level Rise
Mark Merrifield shared measurements from tide gauges and satellite data across California. Sea levels in the eastern Pacific are 15 centimeters above average, and this anomaly is spreading northward. Merrifield predicts sea levels will be far above average this fall and winter.
5Global Warming and El Niño
El Niño is occurring on top of long-term sea level rise driven by global warming. Additionally, the tidal cycle is expected to peak around the same time as El Niño. This 'unlucky coincidence' could drive sea levels to record highs.
6Coastal Flooding and Erosion
El Niño is expected to increase rainfall in Southern California. Combined with sea level rise, this could lead to coastal flooding, saltwater intrusion into groundwater, and coastal erosion. Scientists warn these impacts could be severe.
7Historical Comparison
The El Niño phenomenon has occurred only five times in the last 40 years. This year's El Niño is expected to be one of the strongest on record. Scientists predict it could have a $10 trillion impact on the global economy.
8Preparations Intensify
The California Office of Emergency Services is ramping up preparations for El Niño's potential impacts. Nate Ortiz stated his team is preparing for the worst while hoping for the best. These preparations aim to ensure the safety of coastal communities.
Original article: Gizmodo — El Niño, Kaliforniya Kıyılarında Rekor Deniz Seviyelerine Neden Olabilir