> Published March 9, 2006, from: > > GEOPHYSICAL RESEARCH LETTERS, VOL. 33, L05708, doi:10.1029/2005GL025539, > 2006 > > Phenomenological solar contribution to the 19002000 global surface warming > > N. Scafetta > > Physics Department, Duke University, Durham, North Carolina, USA > > B. J. West > > Physics Department, Duke University, Durham, North Carolina, USA > Mathematical and Information Science Directorate, U.S. Army Research Office, > Research > Triangle Park, North Carolina, USA > > Abstract > > We study the role of solar forcing on global surface temperature during four > periods of the > industrial era (19002000, 19001950, 19502000 and 19802000) by using a > sun-climate > coupling model based on four scale-dependent empirical climate sensitive > parameters to solar > variations. We use two alternative total solar irradiance satellite > composites, ACRIM and > PMOD, and a total solar irradiance proxy reconstruction. We estimate that the > sun contributed > as much as 4550% of the 19002000 global warming, and 2535% of the > 19802000 global > warming. These results, while confirming that anthropogenic-added climate > forcing might have > progressively played a dominant role in climate change during the last > century, also suggest > that the solar impact on climate change during the same period is > significantly stronger than > what some theoretical models have predicted. > > Received 19 December 2005; accepted 30 January 2006; published 9 March 2006. > > Index Terms: 1616 Global Change: Climate variability (1635, 3305, 3309, 4215, > 4513); 1626 > Global Change: Global climate models (3337, 4928); 1650 Global Change: Solar > variability > (7537); 1699 Global Change: General or miscellaneous; 1739 History of > Geophysics: > Solar/planetary relationships. > > Full Article (Nonsubscribers may purchase for $9.00, Includes print PDF, file > size: 156579 > bytes) > > Citation: Scafetta, N., and B. J. West (2006), Phenomenological solar > contribution to the > 19002000 global surface warming, Geophys. Res. Lett., 33, L05708, > doi:10.1029/2005GL025539. > > Copyright 2006 by the American Geophysical Union. >
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