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Climate bulletin - September 2013

Temperature anomalies relative to the 1961 - 1990 average.

Summary of the world's climate in September 2013.

The global average temperature for September 2013 was 0.53 ± 0.19 °C above the 1961-1990 average (very similar to July and August). Sea-surface temperatures (SSTs) in the Tropical Pacific remained close to or below the long-term average, but together with other indicators, conditions were still El Niño-Southern Oscillation (ENSO) neutral.

During September, north America, western Europe, northern Africa and parts of Asia and South America were warmer than average. Record monthly temperatures for September were reported across large areas of Australia. Area of colder than average temperatures were reported in Alaska, southern South America, South Africa and across large areas of northern Eurasia.

SSTs were generally warmer than average, but areas of cooler than average SSTs were observed in the eastern Pacific, parts of the eastern Atlantic and across large areas of the Southern Ocean, although data coverage is sparse in the Southern Oceans.

The annual Arctic sea-ice minimum in September 2013 was higher than the record low extent reported in 2012, but remained below the long-term average for the satellite era.

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