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Measurements of Surface Temperature and Sun’s Energy
The Sun’s energy received at the top of Earth’s atmosphere has been measured by satellites since 1978. It has followed its natural 11-year cycle of small ups and downs, but with no net increase (bottom). Over the same period, global temperature has risen markedly (top).1 Image References: NOAA/NCDC; Frölich and Lean; Willson and Mordvinov; Dewitte et al.2
References
- 1. [60] Lean, J. L., and D. H. Rind. "How Natural and Anthropogenic Influences Alter Global and Regional Surface Temperatures: 1889 to 2006." Geophysical Research Letters 35 (2008).
- 2. [59] various. footnote 59., 2009.
Summary
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