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Climate bulletin - January 2013

Temperature anomalies relative to the 1961 - 1990 average.

Summary of the world's climate in January 2013.

The global average temperature calculated from HadCRUT4 for January 2013 was 0.43 ± 0.17 °C above the 1961-1990 average. This anomaly is higher than in December 2012 when unusually cold temperatures over Eurasia helped bring global average surface temperatures down to 0.27 °C above the 1961-1990 average.

Areas of the North Atlantic were warmer than the 90th percentile estimated using data from the 1961-1990 period. Large areas throughout the tropical Atlantic, tropical Indian Ocean and western tropical Pacific were also warmer than the 90th percentile along with areas of the middle east, central and east Africa and Australia. Areas of significant cold - with temperatures below the 10th percentile of the 1961-1990 period - were the western US, parts of the eastern Pacific and limited areas of southern and eastern Asia.

El Niño Southern Oscillation (ENSO) conditions remain neutral. Sea-surface temperatures in the tropical Pacific remained close to average during January.

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