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This article contains several fallacies and biases, including anecdotal evidence, appeal to authority, false precision, hasty generalization, correlation-causation fallacy, false analogy, and ambiguity. As a result, it's essential to take these into account when interpreting the information presented.
To save time, here's a TL;DR with the key points summarized in a single paragraph:
Sudden and significant increase in ocean temperatures observed over the last few weeks. Possible explanations include developing El Nino, rebound from La Nina cooling, and ongoing global warming. Global average ocean sea surface temperature increased by approximately 0.36 degrees Fahrenheit (0.2 degrees Celsius). Researchers debate whether warming is primarily due to El Nino or other factors. Marine heatwaves and ocean warming spots observed that do not fit typical El Nino pattern. Deeper ocean consistently warming in recent years, absorbing the majority of heat energy from greenhouse gases. La Nina's cooling effect has subsided, potentially leading to more temperature records being broken. Further research needed to understand causes, consequences, and complex factors driving ocean temperature spike.