Warmest Decades
Numerous cycles have been found to influence annual global mean temperatures. The tropical El Niño-La Niña cycle and the Pacific Decadal Oscillation are the most well-known of these cycles. An examination of the average global temperature changes by decades reveals continuing climate change. Following chart is from NASA data of combined land-surface air and sea-surface water temperature anomalies.
| Years | Temp. anomaly (°C anomaly (°F anomaly) from 1951–1980 mean) |
|---|---|
| 1880–1889 | 3000726000000000000−0.274 °C (−0.493 °F) |
| 1890–1899 | 3000746000000000000−0.254 °C (−0.457 °F) |
| 1900–1909 | 3000741000000000000−0.259 °C (−0.466 °F) |
| 1910–1919 | 3000724000000000000−0.276 °C (−0.497 °F) |
| 1920–1929 | 3000825000000000000−0.175 °C (−0.315 °F) |
| 1930–1939 | 3001570000000000000−0.043 °C (−0.0774 °F) |
| 1940–1949 | 69983500000000000000.035 °C (0.0630 °F) |
| 1950–1959 | 3001800000000000000−0.02 °C (−0.0360 °F) |
| 1960–1969 | 3001860000000000000−0.014 °C (−0.0252 °F) |
| 1970–1979 | 3002900000000000000−0.001 °C (−0.00180 °F) |
| 1980–1989 | 69991760000000000000.176 °C (0.317 °F) |
| 1990–1999 | 69993130000000000000.313 °C (0.563 °F) |
| 2000–2009 | 69995130000000000000.513 °C (0.923 °F) |
Read more about this topic: Instrumental Temperature Record
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