Warmer oceans are sounding a warning, Pg12

Key Highlights:

• Global sea-surface temperature reached a record 21.1 degrees Celsius on August 22, driven by a rapidly intensifying El Niño and global warming.
• This new record surpassed the previous high of 21.09 degrees Celsius recorded in March 2024.
• Oceans have absorbed over 90% of excess heat from global warming, acting as a crucial climate buffer, according to IPCC and NASA.
• The warming oceans are causing stress on marine ecosystems, disrupting food webs, and affecting the capacity to regulate weather.
• Global average sea level was approximately 11 centimetres higher by the end of 2025 compared to January 1993.

Ocean Temperature.jpg

Detailed Insights:

• The record temperatures in August followed consistently high sea surface temperatures in June and July, indicating a sustained trend rather than an anomaly.
• The ocean's critical role in sequestering heat has delayed catastrophic climate change impacts, but at the cost of marine ecosystem health.
• Consequences of ocean warming include extreme weather events like European heatwaves, erratic monsoons in India, and unseasonal snowfall in South America.
• Rising ocean temperatures contribute significantly to sea-level rise, posing threats to coastal communities globally.
• The article emphasizes the dual approach of mitigation (reducing greenhouse gas emissions) and adaptation (building resilience to climate impacts).
• India, with its extensive coastline of over 10,000 km, needs to prioritize adaptation strategies such as protecting coastal populations and improving climate-informed agriculture and water management systems.

Key Concepts Involved:

• El Niño: A climate pattern describing unusual warming of surface waters in the eastern tropical Pacific Ocean.
• Intergovernmental Panel on Climate Change (IPCC): The United Nations body for assessing climate change science.
• NASA: The United States' National Aeronautics and Space Administration, responsible for space exploration and aeronautics research.
• Mitigation: Actions taken to reduce or prevent the emission of greenhouse gases and enhance their sinks.
• Adaptation: Adjustments in natural or human systems in response to actual or expected climatic stimuli or their effects.