Sea-Surface Temperature Anomalies: El Niño
OceansPhysical EnvironmentA composite of sea-surface temperature anomalies during El Niño from November to March during the following years: 1958, 1966, 1973, 1983, 1987, 1992, 1996, and 1998. When sea-surface temperatures in the tropical eastern Pacific rise well above normal, it is known as an El Niño event.
NOAASea-surface temperature anomalies during El Niño. The most intense warming (2 to 2.25 degrees Celsius, dark brown) occurs off the coast of South America. Cooler areas (negative 2.25 to negative 2 degrees Celsius, dark blue) are in the Arctic Ocean.
-0.25 to 0.25 | 0.75 to 1.0 | 1.0 to 1.25 | 1.25 to 1.5 | 1.5 to 1.75 | Class | Rank | Global Index Score | 20–29°F | 30–39°F | 40–49°F | 50–54°F | 55–59°F | 60–64°F | 65–70°F | More than 70°F | Class | Rank | Kilograms | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.311% | 1.20% | 0.159% | 0.444% | 2.10% | 6.56% | 12.0% | 27.1% | 11.3% | 22.7% | 28.5% | 31.4% | 17.9% | |||||||
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