The article discusses how researchers are using the quahog mussel, a long-lived mollusk, to predict future ocean conditions by analyzing its shell, which records environmental changes over up to 500 years. This research suggests that we may be nearing a critical "tipping point" in Atlantic currents, which could have significant implications for global climate.
Dr. Beatriz Arellano-Nava emphasizes the importance of having long-term, gapless data to predict these changes. The study, which also examined shells from the dog monkey, provides insights into historical ocean conditions through growth rings. The findings indicate a “loss of stability” in the North Atlantic, with evidence of two destabilizing events over the past 150 years; one began in the early 20th century and another in 1950 that continues today.
Professor Paul Halloran notes that once systems become unstable, they tend to not recover quickly, highlighting the urgency of the situation. The ongoing destabilization is tied to Arctic warming and poses a risk to the global climate. While the specific causes of the instability are still unclear, the researchers stress that curbing greenhouse gas emissions could help prevent reaching the Atlantic tipping point. The study was published in Science Advances.
