Every month University of Alabama in Huntsville climatologists John Christy and Roy Spencer report the latest global temperature trends from satellite data. Below are the newest data updated through July 2014.
Global Temperature Report: July 2014
Global climate trend since Nov. 16, 1978: +0.14 C per decade
July temperatures (preliminary)
Global composite temp.: +0.31 C (about 0.56 degrees Fahrenheit) above 30-year average for July.
Northern Hemisphere: +0.29 C (about 0.52 degrees Fahrenheit) above 30-year average for July.
Southern Hemisphere: +0.32 C (about 0.58 degrees Fahrenheit) above 30-year average for July.
Tropics: +0.45 C (about 0.81 degrees Fahrenheit) above 30-year average for July.
Notes on data released August 5, 2014:
In the tropics, July 2014 was the second warmest July in the 36-year satellite record, only 0.03 C cooler than July 2009 and 0.06 C warmer than July 1998, according to Dr. John Christy, a professor of atmospheric science and director of the Earth System Science Center at The University of Alabama in Huntsville. The average temperature in the tropics during July was 0.45 C (about 0.81° F) warmer than seasonal norms for the month.
The global average temperature for July was 0.31 C (about 0.56 degrees Fahrenheit) warmer than seasonal norms, the fifth warmest July in the satellite record.
Go here to see a map showing global temperature anomalies.