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Science 30 March 1990:
Vol. 247. no. 4950, pp. 1558 - 1562
DOI: 10.1126/science.247.4950.1558
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Articles

Precise Monitoring of Global Temperature Trends from Satellites

Roy W. Spencer 1 and John R. Christy 2

1 Marshall Space Flight Center Huntsville, Code ES43, Huntsville, AL 35812
2 Johnson Research Center, University of Alabama, Huntsville, AL 35899

Passive microwave radiometry from satellites provides more precise atmospheric temperature information than that obtained from the relatively sparse distribution of thermometers over the earth's surface. Accurate global atmospheric temperature estimates are needed for detection of possible greenhouse warming, evaluation of computer models of climate change, and for understanding important factors in the climate system. Analysis of the first 10 years (1979 to 1988) of satellite measurements of lower atmospheric temperature changes reveals a monthly precision of 0.01°C, large temperature variability on time scales from weeks to several years, but no obvious trend for the 10-year period. The warmest years, in descending order, were 1987, 1988, 1983, and 1980. The years 1984, 1985, and 1986 were the coolest.


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