Scientists Confirm Southern Ocean Absorbing Record Levels of Carbon, Exceeding Previous Estimates
GENEVA, SWITZERLAND – A comprehensive study published today in the journal Nature Geoscience has revealed that the Southern Ocean, the vast body of water encircling Antarctica, is absorbing significantly more carbon dioxide than previously estimated, with absorption rates reaching a record high in 2023. The research, led by the Swiss Federal Institute of Technology, analyzed data from 25 research cruises and 40 autonomous floats over a decade. According to lead author Dr. Helena Richter, the Southern Ocean's annual carbon uptake has increased by 15% since 2015, now sequestering approximately 1.5 billion metric tons of carbon each year. This surge, driven by stronger westerly winds and shifts in ocean circulation, plays a critical role in moderating global climate change by removing excess greenhouse gases from the atmosphere. However, scientists warn that the long-term viability of this carbon sink remains uncertain due to potential feedback loops involving ocean acidification and sea ice melt. The findings prompt urgent calls for enhanced monitoring and international policy adjustments to account for the Southern Ocean's dynamic role in the Earth's carbon cycle.