Tuesday, September 18, 2012

Summer 2012 Global Temperatures 3rd Warmest on Record

From NCDC:
For the period June–August, the average global temperature across land and oceans was 0.64°C (1.15°F) above the 20th century average, making this the third warmest such period on record. It was the second warmest June–August in the Northern Hemisphere and ninth warmest in the Southern Hemisphere.
 
Considering global land surfaces only, June–August 2012 was record warm, at 1.03°C (1.85°F) above average. The highest anomalies occurred across parts of the Northern Hemisphere, including most of the contiguous United States and Canada, southern and eastern Europe, Kazakhstan, and eastern Siberia. Even with cooler-than-average temperatures in Alaska and northern Europe, the Northern Hemisphere observed its all-time warmest summer on record. And even with below-average temperatures across much of southern South America and northern and eastern Australia, the Southern Hemisphere observed its tenth warmest winter on record.
  • A warmer-than-average August, in combination with the hottest July and a warmer-than-average June, contributed to the third hottest summer on record for the contiguous United States, at 1.3°C (2.3°F) above average.

  • The average maximum (daytime) temperature for June–August (winter) across Australia was near normal, while the minimum (nighttime) temperature ranked as the third coolest on record, at 0.91°C (1.64°F) below average.
The average monthly global ocean temperature anomaly increased each month from June to August as ENSO-neutral conditions in the eastern equatorial Pacific Ocean continued to move toward potential El Niño conditions, making this the 11th warmest such period on record. Ocean temperatures were notably above average in the north central and north west Pacific Ocean, northeastern Atlantic Ocean and Labrador Sea, and cooler than average in the northeastern and central Pacific Ocean, the southern Atlantic Ocean, and the Indian Ocean near northern Australia.

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