File name: Ocean--Monthly--Difference-from-average-Sea-Surface-Temperature--Pacific--2023-03-00--small.png
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Sea surface temperatures across the tropical Pacific Ocean in March 2023 compared to the long-term average. The waters of the central Pacific at the equator remained slightly cooler than average (light blue), while a warmer-than-average anomaly (red) is building in the eastern part of the basin—a sign that El Niño may be building. NOAA Climate.gov image from Data Snapshots, based on Coral Reef Watch data.