Coral Records Offer Clues on Whether El Niño Events Are Intensifying
Scientists are examining centuries-old coral formations to determine if recent decades of frequent, intense El Niño events reflect natural variability or a climate change-driven trend, according to a report by Deutsche Welle.
Climate researchers are turning to corals as a natural archive to investigate whether El Niño events, a recurring ocean-atmosphere phenomenon in the tropical Pacific, have become more frequent and extreme in recent decades, according to a report by Deutsche Welle.
The report notes that records from the past several decades show El Niño events occurring often and, in some cases, with unusual intensity. Researchers are seeking to determine whether this pattern represents typical natural variability or is linked to broader climate change, the report said.
According to Deutsche Welle, corals can serve as a valuable source of historical climate data, since their growth patterns and chemical composition can preserve information about ocean conditions over long periods. This allows scientists to compare recent El Niño activity against a longer historical baseline than instrumental records alone can provide.
The report did not specify further details on the methodology or findings of any particular study, but framed coral-based climate reconstruction as a tool for placing contemporary El Niño patterns in a broader historical context.
El Niño is a climate pattern characterized by warmer-than-average sea surface temperatures in the central and eastern tropical Pacific Ocean, which can influence weather patterns worldwide, including rainfall and temperature extremes in various regions.
Sources
- Corals as climate archive: Are El Niños intensifying? — Deutsche Welle — English
EGazette summarizes reporting from multiple sources; follow the links for the originals.
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