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.
-0.5 to -0.25 | -0.25 to 0.25 | 0.25 to 0.5 | 0.5 to 0.75 | 0.75 to 1.0 | 1.0 to 1.25 | 1.25 to 1.5 | 1.5 to 1.75 | Class | Rank | Flood events | 4.70–4.79 pH | 4.80–4.89 pH | 4.90–4.99 pH | 5.00–5.09 pH | 5.10–5.19 pH | ≥5.30 pH | Class | Rank | Percent | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3.61% | 5.25% | 24.0% | 2.19% | 8.23% | 7.64% | 10.5% | 43.8% | |||||||||||||
31.0% | 100% | |||||||||||||||||||
22.4% | ||||||||||||||||||||
2.41% | ||||||||||||||||||||
1.01% | ||||||||||||||||||||
100% | ||||||||||||||||||||
10.5% | 13.5% | 1.09% | ||||||||||||||||||
1.13% | 1.16% | 1.51% | 1.42% | 1.12% | 45.8% | |||||||||||||||
5.09% | 3.96% |
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