January temperatures (preliminary)
Global composite temp.: -0.09 C (about 0.16 degrees Fahrenheit) below 30-year average for January.
Northern Hemisphere: -0.06 C (about 0.11 degrees Fahrenheit) below 30-year average for January.
Southern Hemisphere: -0.13 C (about 0.23 degrees Fahrenheit) below 30-year average for January.
Tropics: -0.13 C (about 0.23 degrees Fahrenheit) below 30-year average for January.
December temperatures (revised):
Global Composite: +0.13 C above 30-year average
Northern Hemisphere: +0.20 C above 30-year average
Southern Hemisphere: +0.06 C above 30-year average
Tropics: +0.04 C above 30-year average
(All temperature anomalies are based on a 30-year average (1981-2010) for the month reported.)
The University of Alabama in Huntsville scientists use data gathered by NOAA and NASA satellites to get accurate temperature readings for almost all regions of the Earth. This includes remote desert, ocean and rain forest areas where reliable climate data are not otherwise available.
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 Christy nor Spencer 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 federal and state grants or contracts.For Additional Information:
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