Record Ocean Warming and South Korea Heatwave Days Reported This Week
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Ocean surface temperatures climbed to 21.1 degrees Celsius last Friday and Saturday, exceeding the prior record established in March 2024, with a supersized El Niño and broader climate change identified as contributing factors. In South Korea, the Korea Meteorological Administration reported Tuesday that the country has experienced 20 heatwave days year-to-date, nearly double the 10.4-day historical average calculated at a 33-degree Celsius apparent temperature threshold. Marine warming is projected to continue past the typical seasonal peak of March or April, while South Korean officials noted the current heat accumulation remains elevated.