Global climate trend since Nov. 16, 1978: +0.13 C per decade
November temperatures (preliminary)
Global composite temp.: +0.50 C (about 0.90 degrees Fahrenheit) above 20-year average for November.
Northern Hemisphere: +0.42 C (about 0.76 degrees Fahrenheit) above 20-year average for November.
Southern Hemisphere: +0.58 C (about 1.04 degrees Fahrenheit) above 20-year average for November.
October temperatures (revised):
Global Composite: +0.29 C above 20-year average
Northern Hemisphere: +0.27 C above 20-year average
Southern Hemisphere: +0.30 C above 20-year average
(All temperature variations are based on a 20-year average (1979-1998) for the month reported.)
Notes on data released December 7, 2009:
The strong signature of an El Niño Pacific Ocean warming event showed up as the warmest November in 30 years — and not just by a little bit, according to Dr. John Christy, professor of atmospheric science and director of the Earth System Science Center at The University of Alabama in Huntsville. November 2009 was a full 0.1 C (0.18 degrees Fahrenheit) warmer than November 2005, the second warmest November in the 31-year satellite record.Warmest Novembers (Global)
The satellite-based instruments measure the temperature of the atmosphere from the surface up to an altitude of about eight kilometers above sea level. Once the monthly temperature data is collected and processed, it is placed in a "public" computer file for immediate access by atmospheric scientists in the U.S. and abroad.
Neither Spencer nor Christy receives any research support or funding from oil, coal or industrial companies or organizations, or from any private or special interest groups. All of their climate research funding comes from state and federal grants or contracts.
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