NASA tracks El Niño through ocean heat, height and colour
NASA outlined satellite observations of the 2026 El Niño on October 15, combining changes in Pacific temperatures, sea levels and ocean colour.
Sea surface temperatures during the 1997–1998 El Niño. Archive illustration.
NASA outlined satellite observations of the 2026 El Niño on October 15, combining changes in Pacific temperatures, sea levels and ocean colour.
Sentinel-6 satellites measure water height, while PACE follows colour shifts associated with phytoplankton. Reduced upwelling of nutrient-rich water can diminish these microscopic organisms in affected areas.
Scientists are combining the indicators to understand how the event influences marine ecosystems and weather patterns, rather than relying on a single measurement.
Source: NASA.
Photo credit: Charles Thompson.
Image on Wikimedia Commons — Public domain. Resized and converted to WebP.
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