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 May, 2011.

Pacific cooling fades and temperatures rise


Global Temperature Report: May 2011


Global climate trend since Nov. 16, 1978: +0.14 C per decade


May temperatures (preliminary)

Global composite temp.: +0.13 C (about 0.23 degrees Fahrenheit) above 30-year average for May.

Northern Hemisphere: +0.14 C (about 0.25 degrees Fahrenheit) above 30-year average for May.

Southern Hemisphere: +0.12 C (about 0.22 degrees Fahrenheit) above 30-year average for May.

Tropics: -0.04 C (about 0.07 degrees Fahrenheit) below 30-year average for May.


April temperatures (revised):

Global Composite: +0.12 C above 30-year average

Northern Hemisphere: +0.20 C above 30-year average

Southern Hemisphere: +0.04 C above 30-year average

Tropics: -0.23 C below 30-year average

(All temperature anomalies are based on a 30-year average (1981-2010) for the month reported.)

Go here to see the global temperature data by month.