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Climate bulletin - May 2013

Temperature anomalies relative to the 1961 - 1990 average.

Summary of the world's climate in May 2013.

The global average temperature in May 2013 was 0.50 ± 0.17 °C above the 1961-1990 average. Sea surface temperatures in the tropical Pacific cooled slightly, but remained close to the long-term average. Together with other atmospheric indicators, this is consistent with ongoing neutral El Niño Southern Oscillation conditions.
In May, land temperatures were below average over the UK and western Europe, in an area north of lake Balkash, Alaska. Temperatures were above average over the western United States and much of Australia. Large areas of north Africa and Eurasia were warmer than average with temperatures more than 5 °C above average in north east Russia.
Globally, sea-surface temperatures were warmer than the long-term average. Parts of the north Pacific were cooler than average along with the eastern tropical Pacific and areas of the south Atlantic. Although much of the north Atlantic was warmer than the long-term average, an area of below average temperatures extended from the Caribbean to the UK. The below average sea-surface temperatures over the UK are a reminder of the very cold weather during March and April. In contrast, sea-surface temperatures in parts of the Mediterranean were much warmer than average following persistent warmer-than-average weather during the month.

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